With dual monitors, I have the following problem: The displays are switched between the two monitors, with respect to the mouse pointer's address. To reproduce: - Move the cursor to the left monitor and right-click on the desktop. - The pop-up menu appears on the *right* monitor, in the same position where the mouse pointer appears to be located on the left. Same behavior for any click, right- or left-, on any window/toolbar/etc that I have tried. That makes the GUI unusable. Setup is FC24, Kernels 4.10.8 and 4.10.9, with nouveau graphics drivers and an NVIDIA Quadro K620 card. Monitors are configured side-by-side with no rotation. The only thing that is slightly different from standard is that the right monitor is my primary. This does not happen with Kernel 4.9.13, nor does it happen in Gnome Classic or KDE. I use GDM as a login manager and everything works fine there, too, with any kernel.
Please provide the output of "xrandr -q --verbose".
and "xfwm4 --version" as well
Note: the following is with the 4.9.13 kernel, for which this problem does NOT exist. Let me know if that's no good and I'll get it with the other kernel (which is a little harder, since I can't really use the mouse, but I'll just re-direct it to a file, re-boot and access it that way). $ xrandr -q --verbose Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384 DVI-I-1 connected primary 1920x1080+1920+0 (0x6c) normal (normal left inverted right x axis y axis) 531mm x 299mm Identifier: 0x69 Timestamp: 74721006 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff000469932401010101 0c19010380351e78ea2cc5a45650a128 0f5054bfef00714f818081409500a940 b300d1c00101023a801871382d40582c 4500132b2100001e000000fd00324c1e 5311000a202020202020000000fc0056 453234370a20202020202020000000ff 0046334c4d51533037333936320a00c6 dithering depth: auto supported: auto, 6 bpc, 8 bpc dithering mode: auto supported: auto, off, static 2x2, dynamic 2x2, temporal scaling mode: None supported: None, Full, Center, Full aspect color vibrance: 150 range: (0, 200) vibrant hue: 90 range: (0, 180) underscan vborder: 0 range: (0, 128) underscan hborder: 0 range: (0, 128) underscan: off supported: auto, off, on subconnector: DVI-D supported: Unknown, DVI-D, DVI-A 1920x1080 (0x6c) 148.500MHz +HSync +VSync *current +preferred h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz 1600x1200 (0x6d) 175.500MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 81.25KHz v: height 1200 start 1201 end 1204 total 1250 clock 65.00Hz 1600x1200 (0x6e) 162.000MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz v: height 1200 start 1201 end 1204 total 1250 clock 60.00Hz 1680x1050 (0x6f) 119.000MHz +HSync -VSync h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz 1400x1050 (0x70) 155.800MHz +HSync +VSync h: width 1400 start 1464 end 1784 total 1912 skew 0 clock 81.49KHz v: height 1050 start 1052 end 1064 total 1090 clock 74.76Hz 1400x1050 (0x71) 122.000MHz +HSync +VSync h: width 1400 start 1488 end 1640 total 1880 skew 0 clock 64.89KHz v: height 1050 start 1052 end 1064 total 1082 clock 59.98Hz 1280x1024 (0x72) 135.000MHz +HSync +VSync h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz 1280x1024 (0x73) 108.000MHz +HSync +VSync h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz 1440x900 (0x74) 88.750MHz +HSync -VSync h: width 1440 start 1488 end 1520 total 1600 skew 0 clock 55.47KHz v: height 900 start 903 end 909 total 926 clock 59.90Hz 1280x960 (0x75) 108.000MHz +HSync +VSync h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz v: height 960 start 961 end 964 total 1000 clock 60.00Hz 1152x864 (0x76) 108.000MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz v: height 864 start 865 end 868 total 900 clock 75.00Hz 1024x768 (0x77) 170.240MHz -HSync +VSync DoubleScan h: width 1024 start 1108 end 1220 total 1416 skew 0 clock 120.23KHz v: height 768 start 768 end 770 total 801 clock 75.05Hz 1024x768 (0x78) 133.475MHz -HSync +VSync DoubleScan h: width 1024 start 1100 end 1212 total 1400 skew 0 clock 95.34KHz v: height 768 start 768 end 770 total 794 clock 60.04Hz 1024x768 (0x79) 78.750MHz +HSync +VSync h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz v: height 768 start 769 end 772 total 800 clock 75.03Hz 1024x768 (0x7a) 75.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz v: height 768 start 771 end 777 total 806 clock 70.07Hz 1024x768 (0x42) 65.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 960x720 (0x7b) 148.500MHz -HSync +VSync DoubleScan h: width 960 start 1032 end 1144 total 1320 skew 0 clock 112.50KHz v: height 720 start 720 end 722 total 750 clock 75.00Hz 960x720 (0x7c) 117.000MHz -HSync +VSync DoubleScan h: width 960 start 1024 end 1128 total 1300 skew 0 clock 90.00KHz v: height 720 start 720 end 722 total 750 clock 60.00Hz 928x696 (0x7d) 144.000MHz -HSync +VSync DoubleScan h: width 928 start 992 end 1104 total 1280 skew 0 clock 112.50KHz v: height 696 start 696 end 698 total 750 clock 75.00Hz 928x696 (0x7e) 109.150MHz -HSync +VSync DoubleScan h: width 928 start 976 end 1088 total 1264 skew 0 clock 86.35KHz v: height 696 start 696 end 698 total 719 clock 60.05Hz 896x672 (0x7f) 130.500MHz -HSync +VSync DoubleScan h: width 896 start 944 end 1052 total 1228 skew 0 clock 106.27KHz v: height 672 start 672 end 674 total 708 clock 75.05Hz 896x672 (0x80) 102.400MHz -HSync +VSync DoubleScan h: width 896 start 960 end 1060 total 1224 skew 0 clock 83.66KHz v: height 672 start 672 end 674 total 697 clock 60.01Hz 832x624 (0x81) 57.284MHz -HSync -VSync h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz v: height 624 start 625 end 628 total 667 clock 74.55Hz 800x600 (0x82) 101.250MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 93.75KHz v: height 600 start 600 end 602 total 625 clock 75.00Hz 800x600 (0x83) 94.500MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 87.50KHz v: height 600 start 600 end 602 total 625 clock 70.00Hz 800x600 (0x84) 87.750MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 81.25KHz v: height 600 start 600 end 602 total 625 clock 65.00Hz 800x600 (0x85) 81.000MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 75.00KHz v: height 600 start 600 end 602 total 625 clock 60.00Hz 800x600 (0x86) 50.000MHz +HSync +VSync h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz v: height 600 start 637 end 643 total 666 clock 72.19Hz 800x600 (0x87) 49.500MHz +HSync +VSync h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz v: height 600 start 601 end 604 total 625 clock 75.00Hz 800x600 (0x43) 40.000MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz 800x600 (0x44) 36.000MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz v: height 600 start 601 end 603 total 625 clock 56.25Hz 700x525 (0x88) 77.900MHz +HSync +VSync DoubleScan h: width 700 start 732 end 892 total 956 skew 0 clock 81.49KHz v: height 525 start 526 end 532 total 545 clock 74.76Hz 700x525 (0x89) 61.000MHz +HSync +VSync DoubleScan h: width 700 start 744 end 820 total 940 skew 0 clock 64.89KHz v: height 525 start 526 end 532 total 541 clock 59.98Hz 640x512 (0x8a) 67.500MHz +HSync +VSync DoubleScan h: width 640 start 648 end 720 total 844 skew 0 clock 79.98KHz v: height 512 start 512 end 514 total 533 clock 75.02Hz 640x512 (0x8b) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 664 end 720 total 844 skew 0 clock 63.98KHz v: height 512 start 512 end 514 total 533 clock 60.02Hz 640x480 (0x8c) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 688 end 744 total 900 skew 0 clock 60.00KHz v: height 480 start 480 end 482 total 500 clock 60.00Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8e) 31.500MHz -HSync -VSync h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz v: height 480 start 489 end 492 total 520 clock 72.81Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8f) 30.240MHz -HSync -VSync h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz v: height 480 start 483 end 486 total 525 clock 66.67Hz 640x480 (0x45) 25.175MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz v: height 480 start 490 end 492 total 525 clock 59.94Hz 720x400 (0x90) 28.320MHz -HSync +VSync h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz v: height 400 start 412 end 414 total 449 clock 70.08Hz 576x432 (0x91) 54.000MHz +HSync +VSync DoubleScan h: width 576 start 608 end 672 total 800 skew 0 clock 67.50KHz v: height 432 start 432 end 434 total 450 clock 75.00Hz 512x384 (0x92) 39.375MHz +HSync +VSync DoubleScan h: width 512 start 520 end 568 total 656 skew 0 clock 60.02KHz v: height 384 start 384 end 386 total 400 clock 75.03Hz 512x384 (0x93) 37.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 664 skew 0 clock 56.48KHz v: height 384 start 385 end 388 total 403 clock 70.07Hz 512x384 (0x94) 32.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz v: height 384 start 385 end 388 total 403 clock 60.00Hz 416x312 (0x95) 28.642MHz -HSync -VSync DoubleScan h: width 416 start 432 end 464 total 576 skew 0 clock 49.73KHz v: height 312 start 312 end 314 total 333 clock 74.66Hz 400x300 (0x96) 25.000MHz +HSync +VSync DoubleScan h: width 400 start 428 end 488 total 520 skew 0 clock 48.08KHz v: height 300 start 318 end 321 total 333 clock 72.19Hz 400x300 (0x97) 24.750MHz +HSync +VSync DoubleScan h: width 400 start 408 end 448 total 528 skew 0 clock 46.88KHz v: height 300 start 300 end 302 total 312 clock 75.12Hz 400x300 (0x98) 20.000MHz +HSync +VSync DoubleScan h: width 400 start 420 end 484 total 528 skew 0 clock 37.88KHz v: height 300 start 300 end 302 total 314 clock 60.32Hz 400x300 (0x99) 18.000MHz +HSync +VSync DoubleScan h: width 400 start 412 end 448 total 512 skew 0 clock 35.16KHz v: height 300 start 300 end 301 total 312 clock 56.34Hz 320x240 (0x9a) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 332 end 352 total 416 skew 0 clock 37.86KHz v: height 240 start 244 end 246 total 260 clock 72.81Hz 320x240 (0x9b) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 328 end 360 total 420 skew 0 clock 37.50KHz v: height 240 start 240 end 242 total 250 clock 75.00Hz 320x240 (0x9c) 12.587MHz -HSync -VSync DoubleScan h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz v: height 240 start 245 end 246 total 262 clock 60.05Hz DP-1 connected 1920x1080+0+0 (0x6c) normal (normal left inverted right x axis y axis) 531mm x 299mm Identifier: 0x6a Timestamp: 74721006 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 1 CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff000469932401010101 0c19010380351e78ea2cc5a45650a128 0f5054bfef00714f818081409500a940 b300d1c00101023a801871382d40582c 4500132b2100001e000000fd00324c1e 5311000a202020202020000000fc0056 453234370a20202020202020000000ff 0046334c4d51533037333937300a01c6 02031ef14b900504030201111213141f 230907078301000065030c0010001a36 80a070381e4030203500132b2100001a 662156aa51001e30468f3300132b2100 001e011d007251d01e206e285500132b 2100001e8c0ad08a20e02d10103e9600 132b21000018011d8018711c1620582c 2500132b2100009f0000000000000039 dithering depth: auto supported: auto, 6 bpc, 8 bpc dithering mode: auto supported: auto, off, static 2x2, dynamic 2x2, temporal scaling mode: None supported: None, Full, Center, Full aspect color vibrance: 150 range: (0, 200) vibrant hue: 90 range: (0, 180) underscan vborder: 0 range: (0, 128) underscan hborder: 0 range: (0, 128) underscan: off supported: auto, off, on 1920x1080 (0x6c) 148.500MHz +HSync +VSync *current +preferred h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz 1920x1080 (0x9d) 148.500MHz +HSync +VSync h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 56.25KHz v: height 1080 start 1084 end 1089 total 1125 clock 50.00Hz 1920x1080 (0x9e) 148.352MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.43KHz v: height 1080 start 1084 end 1089 total 1125 clock 59.94Hz 1920x1080 (0x9f) 138.500MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 66.59KHz v: height 1080 start 1083 end 1088 total 1110 clock 59.99Hz 1920x1080i (0xa0) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.75KHz v: height 1080 start 1084 end 1094 total 1125 clock 60.00Hz 1920x1080i (0xa1) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 28.12KHz v: height 1080 start 1084 end 1094 total 1125 clock 50.00Hz 1920x1080i (0xa2) 74.176MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.72KHz v: height 1080 start 1084 end 1094 total 1125 clock 59.94Hz 1600x1200 (0x6d) 175.500MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 81.25KHz v: height 1200 start 1201 end 1204 total 1250 clock 65.00Hz 1600x1200 (0x6e) 162.000MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz v: height 1200 start 1201 end 1204 total 1250 clock 60.00Hz 1680x1050 (0x6f) 119.000MHz +HSync -VSync h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz 1400x1050 (0x70) 155.800MHz +HSync +VSync h: width 1400 start 1464 end 1784 total 1912 skew 0 clock 81.49KHz v: height 1050 start 1052 end 1064 total 1090 clock 74.76Hz 1400x1050 (0x71) 122.000MHz +HSync +VSync h: width 1400 start 1488 end 1640 total 1880 skew 0 clock 64.89KHz v: height 1050 start 1052 end 1064 total 1082 clock 59.98Hz 1280x1024 (0x72) 135.000MHz +HSync +VSync h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz 1280x1024 (0x73) 108.000MHz +HSync +VSync h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz 1440x900 (0x74) 88.750MHz +HSync -VSync h: width 1440 start 1488 end 1520 total 1600 skew 0 clock 55.47KHz v: height 900 start 903 end 909 total 926 clock 59.90Hz 1280x960 (0x75) 108.000MHz +HSync +VSync h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz v: height 960 start 961 end 964 total 1000 clock 60.00Hz 1366x768 (0xa3) 85.500MHz +HSync +VSync h: width 1366 start 1436 end 1579 total 1792 skew 0 clock 47.71KHz v: height 768 start 771 end 774 total 798 clock 59.79Hz 1152x864 (0x76) 108.000MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz v: height 864 start 865 end 868 total 900 clock 75.00Hz 1280x720 (0xa4) 74.250MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz v: height 720 start 725 end 730 total 750 clock 60.00Hz 1280x720 (0xa5) 74.250MHz +HSync +VSync h: width 1280 start 1720 end 1760 total 1980 skew 0 clock 37.50KHz v: height 720 start 725 end 730 total 750 clock 50.00Hz 1280x720 (0xa6) 74.176MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 44.96KHz v: height 720 start 725 end 730 total 750 clock 59.94Hz 1024x768 (0x77) 170.240MHz -HSync +VSync DoubleScan h: width 1024 start 1108 end 1220 total 1416 skew 0 clock 120.23KHz v: height 768 start 768 end 770 total 801 clock 75.05Hz 1024x768 (0x78) 133.475MHz -HSync +VSync DoubleScan h: width 1024 start 1100 end 1212 total 1400 skew 0 clock 95.34KHz v: height 768 start 768 end 770 total 794 clock 60.04Hz 1024x768 (0x79) 78.750MHz +HSync +VSync h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz v: height 768 start 769 end 772 total 800 clock 75.03Hz 1024x768 (0x7a) 75.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz v: height 768 start 771 end 777 total 806 clock 70.07Hz 1024x768 (0x42) 65.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 960x720 (0x7b) 148.500MHz -HSync +VSync DoubleScan h: width 960 start 1032 end 1144 total 1320 skew 0 clock 112.50KHz v: height 720 start 720 end 722 total 750 clock 75.00Hz 960x720 (0x7c) 117.000MHz -HSync +VSync DoubleScan h: width 960 start 1024 end 1128 total 1300 skew 0 clock 90.00KHz v: height 720 start 720 end 722 total 750 clock 60.00Hz 928x696 (0x7d) 144.000MHz -HSync +VSync DoubleScan h: width 928 start 992 end 1104 total 1280 skew 0 clock 112.50KHz v: height 696 start 696 end 698 total 750 clock 75.00Hz 928x696 (0x7e) 109.150MHz -HSync +VSync DoubleScan h: width 928 start 976 end 1088 total 1264 skew 0 clock 86.35KHz v: height 696 start 696 end 698 total 719 clock 60.05Hz 896x672 (0x7f) 130.500MHz -HSync +VSync DoubleScan h: width 896 start 944 end 1052 total 1228 skew 0 clock 106.27KHz v: height 672 start 672 end 674 total 708 clock 75.05Hz 896x672 (0x80) 102.400MHz -HSync +VSync DoubleScan h: width 896 start 960 end 1060 total 1224 skew 0 clock 83.66KHz v: height 672 start 672 end 674 total 697 clock 60.01Hz 832x624 (0x81) 57.284MHz -HSync -VSync h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz v: height 624 start 625 end 628 total 667 clock 74.55Hz 800x600 (0x82) 101.250MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 93.75KHz v: height 600 start 600 end 602 total 625 clock 75.00Hz 800x600 (0x83) 94.500MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 87.50KHz v: height 600 start 600 end 602 total 625 clock 70.00Hz 800x600 (0x84) 87.750MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 81.25KHz v: height 600 start 600 end 602 total 625 clock 65.00Hz 800x600 (0x85) 81.000MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 75.00KHz v: height 600 start 600 end 602 total 625 clock 60.00Hz 800x600 (0x86) 50.000MHz +HSync +VSync h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz v: height 600 start 637 end 643 total 666 clock 72.19Hz 800x600 (0x87) 49.500MHz +HSync +VSync h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz v: height 600 start 601 end 604 total 625 clock 75.00Hz 800x600 (0x43) 40.000MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz 800x600 (0x44) 36.000MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz v: height 600 start 601 end 603 total 625 clock 56.25Hz 720x576 (0xa7) 27.000MHz -HSync -VSync h: width 720 start 732 end 796 total 864 skew 0 clock 31.25KHz v: height 576 start 581 end 586 total 625 clock 50.00Hz 700x525 (0x88) 77.900MHz +HSync +VSync DoubleScan h: width 700 start 732 end 892 total 956 skew 0 clock 81.49KHz v: height 525 start 526 end 532 total 545 clock 74.76Hz 700x525 (0x89) 61.000MHz +HSync +VSync DoubleScan h: width 700 start 744 end 820 total 940 skew 0 clock 64.89KHz v: height 525 start 526 end 532 total 541 clock 59.98Hz 720x480 (0xa8) 27.027MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.50KHz v: height 480 start 489 end 495 total 525 clock 60.00Hz 720x480 (0xa9) 27.000MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.47KHz v: height 480 start 489 end 495 total 525 clock 59.94Hz 640x512 (0x8a) 67.500MHz +HSync +VSync DoubleScan h: width 640 start 648 end 720 total 844 skew 0 clock 79.98KHz v: height 512 start 512 end 514 total 533 clock 75.02Hz 640x512 (0x8b) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 664 end 720 total 844 skew 0 clock 63.98KHz v: height 512 start 512 end 514 total 533 clock 60.02Hz 640x480 (0x8c) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 688 end 744 total 900 skew 0 clock 60.00KHz v: height 480 start 480 end 482 total 500 clock 60.00Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8e) 31.500MHz -HSync -VSync h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz v: height 480 start 489 end 492 total 520 clock 72.81Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8f) 30.240MHz -HSync -VSync h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz v: height 480 start 483 end 486 total 525 clock 66.67Hz 640x480 (0xaa) 25.200MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.50KHz v: height 480 start 490 end 492 total 525 clock 60.00Hz 640x480 (0x45) 25.175MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz v: height 480 start 490 end 492 total 525 clock 59.94Hz 720x400 (0x90) 28.320MHz -HSync +VSync h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz v: height 400 start 412 end 414 total 449 clock 70.08Hz 576x432 (0x91) 54.000MHz +HSync +VSync DoubleScan h: width 576 start 608 end 672 total 800 skew 0 clock 67.50KHz v: height 432 start 432 end 434 total 450 clock 75.00Hz 512x384 (0x92) 39.375MHz +HSync +VSync DoubleScan h: width 512 start 520 end 568 total 656 skew 0 clock 60.02KHz v: height 384 start 384 end 386 total 400 clock 75.03Hz 512x384 (0x93) 37.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 664 skew 0 clock 56.48KHz v: height 384 start 385 end 388 total 403 clock 70.07Hz 512x384 (0x94) 32.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz v: height 384 start 385 end 388 total 403 clock 60.00Hz 416x312 (0x95) 28.642MHz -HSync -VSync DoubleScan h: width 416 start 432 end 464 total 576 skew 0 clock 49.73KHz v: height 312 start 312 end 314 total 333 clock 74.66Hz 400x300 (0x96) 25.000MHz +HSync +VSync DoubleScan h: width 400 start 428 end 488 total 520 skew 0 clock 48.08KHz v: height 300 start 318 end 321 total 333 clock 72.19Hz 400x300 (0x97) 24.750MHz +HSync +VSync DoubleScan h: width 400 start 408 end 448 total 528 skew 0 clock 46.88KHz v: height 300 start 300 end 302 total 312 clock 75.12Hz 400x300 (0x98) 20.000MHz +HSync +VSync DoubleScan h: width 400 start 420 end 484 total 528 skew 0 clock 37.88KHz v: height 300 start 300 end 302 total 314 clock 60.32Hz 400x300 (0x99) 18.000MHz +HSync +VSync DoubleScan h: width 400 start 412 end 448 total 512 skew 0 clock 35.16KHz v: height 300 start 300 end 301 total 312 clock 56.34Hz 320x240 (0x9a) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 332 end 352 total 416 skew 0 clock 37.86KHz v: height 240 start 244 end 246 total 260 clock 72.81Hz 320x240 (0x9b) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 328 end 360 total 420 skew 0 clock 37.50KHz v: height 240 start 240 end 242 total 250 clock 75.00Hz 320x240 (0x9c) 12.587MHz -HSync -VSync DoubleScan h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz v: height 240 start 245 end 246 total 262 clock 60.05Hz --------------------------------------------------- $ xfwm4 --version This is xfwm4 version 4.12.3 (revision 7fdcb53) for Xfce 4.12 Released under the terms of the GNU General Public License. Compiled against GTK+-2.24.29, using GTK+-2.24.31. Build configuration and supported features: - Startup notification support: Yes - XSync support: Yes - Render support: Yes - Xrandr support: Yes - Embedded compositor: Yes - KDE systray proxy (deprecated): No
(In reply to Tobias Muhlhofer from comment #3) > Note: the following is with the 4.9.13 kernel, for which this problem does > NOT exist. Let me know if that's no good and I'll get it with the other > kernel (which is a little harder, since I can't really use the mouse, but > I'll just re-direct it to a file, re-boot and access it that way). I don't see how the kernel is relevant here, but if it is, then xfwm4 is not the problem, xfwm4 has no direct dependency on the kernel, it relies on Xorg... How come you cannot use the mouse? If that the the case then definitely not an xfwm4 issue.
Sorry, I misspoke. The mouse is useable, but not useFUL, in that clicks are registered at the same relative location where the cursor is displayed, but on the opposite monitor. That was my original issue. In terms of kernels, as I said in my original post, the problem only happens with 4.10 kernels, and not with the 4.9 kernel I have. However, since the problem does not appear in Gnome or KDE, it seems to me like it is something related to XFCE. Admittedly, though, whether the Window Manager is the right component here, or there is another component of XFCE is unclear. Could there be something in the way in which xfwm4 interacts with Xorg that would cause this? I too would have suspected an Xorg problem, but then this should be visible in all desktop environments, the way I understand it.
No, no component in xfce depends directly on the kernel, especially for input/output, it all relies on Xorg and its drivers, and all the input stack. It is true, however, that Xorg input driver depend on the kernel input drivers. One simple test would be to try with xev, see if the reported root coords of pointer events are correct in xev. FWIW, I am using F25 with kernel 4.10.8 and all is fine in xfce here.
Will be happy to try that, but I have no experience with xev (just fired it up and played with it now). Can you suggest a good way to use that to troubleshoot? Shall I just stick the window in the top left corner of the screen, move the pointer around and see what the coordinates are, that it displays?
Just run xev , move the xev window (you can even resize it if needed) to the left monitor - the one where the menu should appear -, click inside the xev window and check the root coordinates (root: (xxx,yyy) ...) for ButtonPress, EnterEvent and ButtonRelease events.
OK, I did this. I moved the xev window to the top-left corner of the *right* monitor, then moved the cursor to the top left corner of the *left* monitor, and the output was showing coordinates on the *left* monitor (i.e. low numbers in the horizontal). So it actually looks like this is not a mouse-pointer address problem, but a display problem, in that the two displays are shown incorrectly, but really the system thinks the windows are where they're supposed to be, while the mouse pointer is actually displayed where it's supposed to be. Something else that has just appeared: if you suspend the system and then wake it back up, the problem goes away. I'm guessing that in waking the system up something re-probes the monitors and once that's done everything is correct.
In comment 3, you mentioned the values were from "the 4.9.13 kernel, for which this problem does NOT exist", which is not really useful, it would be much more interesting to capture the xrandr setup when the problem occurs. Also, when the problem shows up, does "xrandr --auto" fix the issue? Or what if you try to re-apply the xrandr setup using the xfce4-display-settings, does it make any difference?
One more thing, does the issue occur with with one toolkit in particular (gtk+, Qt)? does it occur with a more basic toolkit such as, say, Motif or Xaw? (nedit or xterm menu for example)
Toolkits: I tried nedit, and this has the same problem. Since most of the stuff running is gtk, I tried firing up Kontact (which I believe should be Qt), and still have the same problem. New xrandr -q --verbose output (produced while the problem was occurring) follows. Stand by for results with xfce4-display-settings. ----------------------- Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384 DVI-I-1 connected primary 1920x1080+1920+0 (0x6c) normal (normal left inverted right x axis y axis) 531mm x 299mm Identifier: 0x69 Timestamp: 165438101 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff000469932401010101 0c19010380351e78ea2cc5a45650a128 0f5054bfef00714f818081409500a940 b300d1c00101023a801871382d40582c 4500132b2100001e000000fd00324c1e 5311000a202020202020000000fc0056 453234370a20202020202020000000ff 0046334c4d51533037333936320a00c6 dithering depth: auto supported: auto, 6 bpc, 8 bpc dithering mode: auto supported: auto, off, static 2x2, dynamic 2x2, temporal scaling mode: None supported: None, Full, Center, Full aspect color vibrance: 150 range: (0, 200) vibrant hue: 90 range: (0, 180) underscan vborder: 0 range: (0, 128) underscan hborder: 0 range: (0, 128) underscan: off supported: auto, off, on subconnector: DVI-D supported: Unknown, DVI-D, DVI-A 1920x1080 (0x6c) 148.500MHz +HSync +VSync *current +preferred h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz 1600x1200 (0x6d) 175.500MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 81.25KHz v: height 1200 start 1201 end 1204 total 1250 clock 65.00Hz 1600x1200 (0x6e) 162.000MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz v: height 1200 start 1201 end 1204 total 1250 clock 60.00Hz 1680x1050 (0x6f) 119.000MHz +HSync -VSync h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz 1400x1050 (0x70) 155.800MHz +HSync +VSync h: width 1400 start 1464 end 1784 total 1912 skew 0 clock 81.49KHz v: height 1050 start 1052 end 1064 total 1090 clock 74.76Hz 1400x1050 (0x71) 122.000MHz +HSync +VSync h: width 1400 start 1488 end 1640 total 1880 skew 0 clock 64.89KHz v: height 1050 start 1052 end 1064 total 1082 clock 59.98Hz 1280x1024 (0x72) 135.000MHz +HSync +VSync h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz 1280x1024 (0x73) 108.000MHz +HSync +VSync h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz 1440x900 (0x74) 88.750MHz +HSync -VSync h: width 1440 start 1488 end 1520 total 1600 skew 0 clock 55.47KHz v: height 900 start 903 end 909 total 926 clock 59.90Hz 1280x960 (0x75) 108.000MHz +HSync +VSync h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz v: height 960 start 961 end 964 total 1000 clock 60.00Hz 1152x864 (0x76) 108.000MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz v: height 864 start 865 end 868 total 900 clock 75.00Hz 1024x768 (0x77) 170.240MHz -HSync +VSync DoubleScan h: width 1024 start 1108 end 1220 total 1416 skew 0 clock 120.23KHz v: height 768 start 768 end 770 total 801 clock 75.05Hz 1024x768 (0x78) 133.475MHz -HSync +VSync DoubleScan h: width 1024 start 1100 end 1212 total 1400 skew 0 clock 95.34KHz v: height 768 start 768 end 770 total 794 clock 60.04Hz 1024x768 (0x79) 78.750MHz +HSync +VSync h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz v: height 768 start 769 end 772 total 800 clock 75.03Hz 1024x768 (0x7a) 75.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz v: height 768 start 771 end 777 total 806 clock 70.07Hz 1024x768 (0x42) 65.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 960x720 (0x7b) 148.500MHz -HSync +VSync DoubleScan h: width 960 start 1032 end 1144 total 1320 skew 0 clock 112.50KHz v: height 720 start 720 end 722 total 750 clock 75.00Hz 960x720 (0x7c) 117.000MHz -HSync +VSync DoubleScan h: width 960 start 1024 end 1128 total 1300 skew 0 clock 90.00KHz v: height 720 start 720 end 722 total 750 clock 60.00Hz 928x696 (0x7d) 144.000MHz -HSync +VSync DoubleScan h: width 928 start 992 end 1104 total 1280 skew 0 clock 112.50KHz v: height 696 start 696 end 698 total 750 clock 75.00Hz 928x696 (0x7e) 109.150MHz -HSync +VSync DoubleScan h: width 928 start 976 end 1088 total 1264 skew 0 clock 86.35KHz v: height 696 start 696 end 698 total 719 clock 60.05Hz 896x672 (0x7f) 130.500MHz -HSync +VSync DoubleScan h: width 896 start 944 end 1052 total 1228 skew 0 clock 106.27KHz v: height 672 start 672 end 674 total 708 clock 75.05Hz 896x672 (0x80) 102.400MHz -HSync +VSync DoubleScan h: width 896 start 960 end 1060 total 1224 skew 0 clock 83.66KHz v: height 672 start 672 end 674 total 697 clock 60.01Hz 832x624 (0x81) 57.284MHz -HSync -VSync h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz v: height 624 start 625 end 628 total 667 clock 74.55Hz 800x600 (0x82) 101.250MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 93.75KHz v: height 600 start 600 end 602 total 625 clock 75.00Hz 800x600 (0x83) 94.500MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 87.50KHz v: height 600 start 600 end 602 total 625 clock 70.00Hz 800x600 (0x84) 87.750MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 81.25KHz v: height 600 start 600 end 602 total 625 clock 65.00Hz 800x600 (0x85) 81.000MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 75.00KHz v: height 600 start 600 end 602 total 625 clock 60.00Hz 800x600 (0x86) 50.000MHz +HSync +VSync h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz v: height 600 start 637 end 643 total 666 clock 72.19Hz 800x600 (0x87) 49.500MHz +HSync +VSync h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz v: height 600 start 601 end 604 total 625 clock 75.00Hz 800x600 (0x43) 40.000MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz 800x600 (0x44) 36.000MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz v: height 600 start 601 end 603 total 625 clock 56.25Hz 700x525 (0x88) 77.900MHz +HSync +VSync DoubleScan h: width 700 start 732 end 892 total 956 skew 0 clock 81.49KHz v: height 525 start 526 end 532 total 545 clock 74.76Hz 700x525 (0x89) 61.000MHz +HSync +VSync DoubleScan h: width 700 start 744 end 820 total 940 skew 0 clock 64.89KHz v: height 525 start 526 end 532 total 541 clock 59.98Hz 640x512 (0x8a) 67.500MHz +HSync +VSync DoubleScan h: width 640 start 648 end 720 total 844 skew 0 clock 79.98KHz v: height 512 start 512 end 514 total 533 clock 75.02Hz 640x512 (0x8b) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 664 end 720 total 844 skew 0 clock 63.98KHz v: height 512 start 512 end 514 total 533 clock 60.02Hz 640x480 (0x8c) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 688 end 744 total 900 skew 0 clock 60.00KHz v: height 480 start 480 end 482 total 500 clock 60.00Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8e) 31.500MHz -HSync -VSync h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz v: height 480 start 489 end 492 total 520 clock 72.81Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8f) 30.240MHz -HSync -VSync h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz v: height 480 start 483 end 486 total 525 clock 66.67Hz 640x480 (0x45) 25.175MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz v: height 480 start 490 end 492 total 525 clock 59.94Hz 720x400 (0x90) 28.320MHz -HSync +VSync h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz v: height 400 start 412 end 414 total 449 clock 70.08Hz 576x432 (0x91) 54.000MHz +HSync +VSync DoubleScan h: width 576 start 608 end 672 total 800 skew 0 clock 67.50KHz v: height 432 start 432 end 434 total 450 clock 75.00Hz 512x384 (0x92) 39.375MHz +HSync +VSync DoubleScan h: width 512 start 520 end 568 total 656 skew 0 clock 60.02KHz v: height 384 start 384 end 386 total 400 clock 75.03Hz 512x384 (0x93) 37.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 664 skew 0 clock 56.48KHz v: height 384 start 385 end 388 total 403 clock 70.07Hz 512x384 (0x94) 32.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz v: height 384 start 385 end 388 total 403 clock 60.00Hz 416x312 (0x95) 28.642MHz -HSync -VSync DoubleScan h: width 416 start 432 end 464 total 576 skew 0 clock 49.73KHz v: height 312 start 312 end 314 total 333 clock 74.66Hz 400x300 (0x96) 25.000MHz +HSync +VSync DoubleScan h: width 400 start 428 end 488 total 520 skew 0 clock 48.08KHz v: height 300 start 318 end 321 total 333 clock 72.19Hz 400x300 (0x97) 24.750MHz +HSync +VSync DoubleScan h: width 400 start 408 end 448 total 528 skew 0 clock 46.88KHz v: height 300 start 300 end 302 total 312 clock 75.12Hz 400x300 (0x98) 20.000MHz +HSync +VSync DoubleScan h: width 400 start 420 end 484 total 528 skew 0 clock 37.88KHz v: height 300 start 300 end 302 total 314 clock 60.32Hz 400x300 (0x99) 18.000MHz +HSync +VSync DoubleScan h: width 400 start 412 end 448 total 512 skew 0 clock 35.16KHz v: height 300 start 300 end 301 total 312 clock 56.34Hz 320x240 (0x9a) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 332 end 352 total 416 skew 0 clock 37.86KHz v: height 240 start 244 end 246 total 260 clock 72.81Hz 320x240 (0x9b) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 328 end 360 total 420 skew 0 clock 37.50KHz v: height 240 start 240 end 242 total 250 clock 75.00Hz 320x240 (0x9c) 12.587MHz -HSync -VSync DoubleScan h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz v: height 240 start 245 end 246 total 262 clock 60.05Hz DP-1 connected 1920x1080+0+0 (0x6c) normal (normal left inverted right x axis y axis) 531mm x 299mm Identifier: 0x6a Timestamp: 165438101 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 1 CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff000469932401010101 0c19010380351e78ea2cc5a45650a128 0f5054bfef00714f818081409500a940 b300d1c00101023a801871382d40582c 4500132b2100001e000000fd00324c1e 5311000a202020202020000000fc0056 453234370a20202020202020000000ff 0046334c4d51533037333937300a01c6 02031ef14b900504030201111213141f 230907078301000065030c0010001a36 80a070381e4030203500132b2100001a 662156aa51001e30468f3300132b2100 001e011d007251d01e206e285500132b 2100001e8c0ad08a20e02d10103e9600 132b21000018011d8018711c1620582c 2500132b2100009f0000000000000039 dithering depth: auto supported: auto, 6 bpc, 8 bpc dithering mode: auto supported: auto, off, static 2x2, dynamic 2x2, temporal scaling mode: None supported: None, Full, Center, Full aspect color vibrance: 150 range: (0, 200) vibrant hue: 90 range: (0, 180) underscan vborder: 0 range: (0, 128) underscan hborder: 0 range: (0, 128) underscan: off supported: auto, off, on 1920x1080 (0x6c) 148.500MHz +HSync +VSync *current +preferred h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz 1920x1080 (0x9d) 148.500MHz +HSync +VSync h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 56.25KHz v: height 1080 start 1084 end 1089 total 1125 clock 50.00Hz 1920x1080 (0x9e) 148.352MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.43KHz v: height 1080 start 1084 end 1089 total 1125 clock 59.94Hz 1920x1080 (0x9f) 138.500MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 66.59KHz v: height 1080 start 1083 end 1088 total 1110 clock 59.99Hz 1920x1080i (0xa0) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.75KHz v: height 1080 start 1084 end 1094 total 1125 clock 60.00Hz 1920x1080i (0xa1) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 28.12KHz v: height 1080 start 1084 end 1094 total 1125 clock 50.00Hz 1920x1080i (0xa2) 74.176MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.72KHz v: height 1080 start 1084 end 1094 total 1125 clock 59.94Hz 1600x1200 (0x6d) 175.500MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 81.25KHz v: height 1200 start 1201 end 1204 total 1250 clock 65.00Hz 1600x1200 (0x6e) 162.000MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz v: height 1200 start 1201 end 1204 total 1250 clock 60.00Hz 1680x1050 (0x6f) 119.000MHz +HSync -VSync h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz 1400x1050 (0x70) 155.800MHz +HSync +VSync h: width 1400 start 1464 end 1784 total 1912 skew 0 clock 81.49KHz v: height 1050 start 1052 end 1064 total 1090 clock 74.76Hz 1400x1050 (0x71) 122.000MHz +HSync +VSync h: width 1400 start 1488 end 1640 total 1880 skew 0 clock 64.89KHz v: height 1050 start 1052 end 1064 total 1082 clock 59.98Hz 1280x1024 (0x72) 135.000MHz +HSync +VSync h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz 1280x1024 (0x73) 108.000MHz +HSync +VSync h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz 1440x900 (0x74) 88.750MHz +HSync -VSync h: width 1440 start 1488 end 1520 total 1600 skew 0 clock 55.47KHz v: height 900 start 903 end 909 total 926 clock 59.90Hz 1280x960 (0x75) 108.000MHz +HSync +VSync h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz v: height 960 start 961 end 964 total 1000 clock 60.00Hz 1366x768 (0xa3) 85.500MHz +HSync +VSync h: width 1366 start 1436 end 1579 total 1792 skew 0 clock 47.71KHz v: height 768 start 771 end 774 total 798 clock 59.79Hz 1152x864 (0x76) 108.000MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz v: height 864 start 865 end 868 total 900 clock 75.00Hz 1280x720 (0xa4) 74.250MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz v: height 720 start 725 end 730 total 750 clock 60.00Hz 1280x720 (0xa5) 74.250MHz +HSync +VSync h: width 1280 start 1720 end 1760 total 1980 skew 0 clock 37.50KHz v: height 720 start 725 end 730 total 750 clock 50.00Hz 1280x720 (0xa6) 74.176MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 44.96KHz v: height 720 start 725 end 730 total 750 clock 59.94Hz 1024x768 (0x77) 170.240MHz -HSync +VSync DoubleScan h: width 1024 start 1108 end 1220 total 1416 skew 0 clock 120.23KHz v: height 768 start 768 end 770 total 801 clock 75.05Hz 1024x768 (0x78) 133.475MHz -HSync +VSync DoubleScan h: width 1024 start 1100 end 1212 total 1400 skew 0 clock 95.34KHz v: height 768 start 768 end 770 total 794 clock 60.04Hz 1024x768 (0x79) 78.750MHz +HSync +VSync h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz v: height 768 start 769 end 772 total 800 clock 75.03Hz 1024x768 (0x7a) 75.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz v: height 768 start 771 end 777 total 806 clock 70.07Hz 1024x768 (0x42) 65.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 960x720 (0x7b) 148.500MHz -HSync +VSync DoubleScan h: width 960 start 1032 end 1144 total 1320 skew 0 clock 112.50KHz v: height 720 start 720 end 722 total 750 clock 75.00Hz 960x720 (0x7c) 117.000MHz -HSync +VSync DoubleScan h: width 960 start 1024 end 1128 total 1300 skew 0 clock 90.00KHz v: height 720 start 720 end 722 total 750 clock 60.00Hz 928x696 (0x7d) 144.000MHz -HSync +VSync DoubleScan h: width 928 start 992 end 1104 total 1280 skew 0 clock 112.50KHz v: height 696 start 696 end 698 total 750 clock 75.00Hz 928x696 (0x7e) 109.150MHz -HSync +VSync DoubleScan h: width 928 start 976 end 1088 total 1264 skew 0 clock 86.35KHz v: height 696 start 696 end 698 total 719 clock 60.05Hz 896x672 (0x7f) 130.500MHz -HSync +VSync DoubleScan h: width 896 start 944 end 1052 total 1228 skew 0 clock 106.27KHz v: height 672 start 672 end 674 total 708 clock 75.05Hz 896x672 (0x80) 102.400MHz -HSync +VSync DoubleScan h: width 896 start 960 end 1060 total 1224 skew 0 clock 83.66KHz v: height 672 start 672 end 674 total 697 clock 60.01Hz 832x624 (0x81) 57.284MHz -HSync -VSync h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz v: height 624 start 625 end 628 total 667 clock 74.55Hz 800x600 (0x82) 101.250MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 93.75KHz v: height 600 start 600 end 602 total 625 clock 75.00Hz 800x600 (0x83) 94.500MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 87.50KHz v: height 600 start 600 end 602 total 625 clock 70.00Hz 800x600 (0x84) 87.750MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 81.25KHz v: height 600 start 600 end 602 total 625 clock 65.00Hz 800x600 (0x85) 81.000MHz +HSync +VSync DoubleScan h: width 800 start 832 end 928 total 1080 skew 0 clock 75.00KHz v: height 600 start 600 end 602 total 625 clock 60.00Hz 800x600 (0x86) 50.000MHz +HSync +VSync h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz v: height 600 start 637 end 643 total 666 clock 72.19Hz 800x600 (0x87) 49.500MHz +HSync +VSync h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz v: height 600 start 601 end 604 total 625 clock 75.00Hz 800x600 (0x43) 40.000MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz 800x600 (0x44) 36.000MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz v: height 600 start 601 end 603 total 625 clock 56.25Hz 720x576 (0xa7) 27.000MHz -HSync -VSync h: width 720 start 732 end 796 total 864 skew 0 clock 31.25KHz v: height 576 start 581 end 586 total 625 clock 50.00Hz 700x525 (0x88) 77.900MHz +HSync +VSync DoubleScan h: width 700 start 732 end 892 total 956 skew 0 clock 81.49KHz v: height 525 start 526 end 532 total 545 clock 74.76Hz 700x525 (0x89) 61.000MHz +HSync +VSync DoubleScan h: width 700 start 744 end 820 total 940 skew 0 clock 64.89KHz v: height 525 start 526 end 532 total 541 clock 59.98Hz 720x480 (0xa8) 27.027MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.50KHz v: height 480 start 489 end 495 total 525 clock 60.00Hz 720x480 (0xa9) 27.000MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.47KHz v: height 480 start 489 end 495 total 525 clock 59.94Hz 640x512 (0x8a) 67.500MHz +HSync +VSync DoubleScan h: width 640 start 648 end 720 total 844 skew 0 clock 79.98KHz v: height 512 start 512 end 514 total 533 clock 75.02Hz 640x512 (0x8b) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 664 end 720 total 844 skew 0 clock 63.98KHz v: height 512 start 512 end 514 total 533 clock 60.02Hz 640x480 (0x8c) 54.000MHz +HSync +VSync DoubleScan h: width 640 start 688 end 744 total 900 skew 0 clock 60.00KHz v: height 480 start 480 end 482 total 500 clock 60.00Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8e) 31.500MHz -HSync -VSync h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz v: height 480 start 489 end 492 total 520 clock 72.81Hz 640x480 (0x8d) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x8f) 30.240MHz -HSync -VSync h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz v: height 480 start 483 end 486 total 525 clock 66.67Hz 640x480 (0xaa) 25.200MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.50KHz v: height 480 start 490 end 492 total 525 clock 60.00Hz 640x480 (0x45) 25.175MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz v: height 480 start 490 end 492 total 525 clock 59.94Hz 720x400 (0x90) 28.320MHz -HSync +VSync h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz v: height 400 start 412 end 414 total 449 clock 70.08Hz 576x432 (0x91) 54.000MHz +HSync +VSync DoubleScan h: width 576 start 608 end 672 total 800 skew 0 clock 67.50KHz v: height 432 start 432 end 434 total 450 clock 75.00Hz 512x384 (0x92) 39.375MHz +HSync +VSync DoubleScan h: width 512 start 520 end 568 total 656 skew 0 clock 60.02KHz v: height 384 start 384 end 386 total 400 clock 75.03Hz 512x384 (0x93) 37.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 664 skew 0 clock 56.48KHz v: height 384 start 385 end 388 total 403 clock 70.07Hz 512x384 (0x94) 32.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz v: height 384 start 385 end 388 total 403 clock 60.00Hz 416x312 (0x95) 28.642MHz -HSync -VSync DoubleScan h: width 416 start 432 end 464 total 576 skew 0 clock 49.73KHz v: height 312 start 312 end 314 total 333 clock 74.66Hz 400x300 (0x96) 25.000MHz +HSync +VSync DoubleScan h: width 400 start 428 end 488 total 520 skew 0 clock 48.08KHz v: height 300 start 318 end 321 total 333 clock 72.19Hz 400x300 (0x97) 24.750MHz +HSync +VSync DoubleScan h: width 400 start 408 end 448 total 528 skew 0 clock 46.88KHz v: height 300 start 300 end 302 total 312 clock 75.12Hz 400x300 (0x98) 20.000MHz +HSync +VSync DoubleScan h: width 400 start 420 end 484 total 528 skew 0 clock 37.88KHz v: height 300 start 300 end 302 total 314 clock 60.32Hz 400x300 (0x99) 18.000MHz +HSync +VSync DoubleScan h: width 400 start 412 end 448 total 512 skew 0 clock 35.16KHz v: height 300 start 300 end 301 total 312 clock 56.34Hz 320x240 (0x9a) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 332 end 352 total 416 skew 0 clock 37.86KHz v: height 240 start 244 end 246 total 260 clock 72.81Hz 320x240 (0x9b) 15.750MHz -HSync -VSync DoubleScan h: width 320 start 328 end 360 total 420 skew 0 clock 37.50KHz v: height 240 start 240 end 242 total 250 clock 75.00Hz 320x240 (0x9c) 12.587MHz -HSync -VSync DoubleScan h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz v: height 240 start 245 end 246 total 262 clock 60.05Hz
If you set the left monitor to be primary, does it make any difference?
No, changing the primary monitor does not make a difference. A few other things I tried: xrandr --auto has no effect. With xfce4-display-settings, there's lots of interesting stuff going on. I should have screen 2 on the left and screen 1 on the right, with screen 1 being the primary. The way they are displayed is the opposite (screen 1 on the right, screen 2 on the left). As stated before, the system acts as if the screens were configured properly (i.e. 2 left, 1 right). When I start xfce4-display-settings, it actually displays the configuration I should have (i.e. 2 left, 1 right). However, when I hit "Identify Displays", then 1 comes up on the *left* and 2 on the *right*, i.e. the way they are displayed. Another interesting thing: I wanted to take a screenshot to show you this, and the screenshot comes up as 2 left, 1 right (i.e. the way the system acts, but not the way things are displayed). As soon as I make any major change (such as change one of the monitors' resolutions) in xfce4-display-settings and apply it, the problem goes away. Another thing of note. I have no Xorg config file that configures the monitor position. When I first get to my login screen (gdm) the screens are displayed by default as 1 left, 2 right [never bothered to research how to change this]. So it seems like when XFCE starts, the transition from that to the 2 left, 1 right that I configured with xfce4-display-settings has something going wrong.
Well, I am now convinced this has nothing to do with xfwm4 itself! It's either nouveau or Xorg (or less likely xfce4-display-settings).
OK, try this: 1. Make sure you have "xterm" installed $ sudo dnf install xterm 2. As root, create a bare failsafe session as follow: $ sudo bash -c "cat > /usr/share/xsessions/xterm.desktop << EOF [Desktop Entry] Version=1.0 Name=Xterm session Comment=Use this session to run a bare xterm Exec=xterm Icon= Type=Application EOF" 3. Log out from your existing session, and login again using the newly created "Xterm session" 4. That will start an X session with *just* an xterm, from that xterm., run xfwm4. $ xfwm4 & 5. Run another application, and try to reproduce.
OK, I set up the xterm session as per your instructions, logged in. At this point, the screens had the default 1 left 2 right configuration (of course). Then I started xfwm4. Then I started xfce4-display-settings. Displays were identified correctly, but making changes to the display configuration had no effect. Then I started Kde System Settings and changed the configuration of the monitors to 2 left, 1 right. After applying changes, the problem re-occurred. Any idea what this might point to?
One more thing: when first logging into the Xterm session, I had the default wallpaper (the Fedora one, blue with stars) displayed in the background. After starting xfwm4, when dragging windows around, they left behind a trail of just plain grey. Not sure if that has anything to do with what we're talking about here, but I figured I would mention everything I saw.
(In reply to Tobias Muhlhofer from comment #17) > OK, I set up the xterm session as per your instructions, logged in. At this > point, the screens had the default 1 left 2 right configuration (of course). > > Then I started xfwm4. > > Then I started xfce4-display-settings. Displays were identified correctly, > but making changes to the display configuration had no effect. That's weird. > Then I started Kde System Settings and changed the configuration of the > monitors to 2 left, 1 right. After applying changes, the problem re-occurred. That's wrong - I would advise to use xrandr commands instead of the gui tools for experiment. > Any idea what this might point to? Definitely not xfwm4 :p Again, this is most likely a driver/kernel issue as booting an older kernel makes the issue go away. (In reply to Tobias Muhlhofer from comment #18) > One more thing: when first logging into the Xterm session, I had the default > wallpaper (the Fedora one, blue with stars) displayed in the background. > > After starting xfwm4, when dragging windows around, they left behind a trail > of just plain grey. Not sure if that has anything to do with what we're > talking about here, but I figured I would mention everything I saw. Yeah, that's completely unrelated, xfwm4 compositor doesn't repaint the root win and relies on a desktop window, which you don;t have with a single xterm session. Nothing to worry about.
OK, I think we got it. I did the following: - Log into the xterm session. - Use xrandr to switch the position of the two displays [after I figured out how to do that]. --> Bingo! The problem appears. So looks like this is not XFCE-related, then. Still, this doesn't happen with Gnome or KDE, but maybe those guys probe the monitors, or do whatever the salient event is that fixes this problem when I suspend and re-wake in XFCE. Might be a design question whether XFCE might want to choose to do this upon startup, but obviously that's way above my pay-grade, so I really don't have an opinion. The remaining question might be why xfce4-display-settings behaves strangely when this occurs. Olivier, thank you for your effort in helping troubleshoot this!
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