Created attachment 2343 Screen shot demonstrating that wallpaper is not black&white I have two displays in a system and after some change wallpaper on second display started to appear as grayscale. izapolsky@luke:~$ xprop _NET_FRAME_EXTENTS(CARDINAL) = 0, 0, 0, 0 _NET_WM_ALLOWED_ACTIONS(ATOM) = _NET_WM_ACTION_CLOSE, _NET_WM_ACTION_ABOVE, _NET_WM_ACTION_BELOW, _NET_WM_ACTION_FULLSCREEN WM_STATE(WM_STATE): window state: Normal icon window: 0x0 _NET_WM_DESKTOP(CARDINAL) = 4294967295 _WIN_WORKSPACE(CARDINAL) = 0 _WIN_STATE(CARDINAL) = 1 _NET_WM_STATE(ATOM) = _NET_WM_STATE_STICKY, _NET_WM_STATE_SKIP_PAGER, _NET_WM_STATE_SKIP_TASKBAR _WIN_LAYER(CARDINAL) = 0 WM_HINTS(WM_HINTS): Client accepts input or input focus: True Initial state is Normal State. window id # of group leader: 0x1600001 XdndAware(ATOM) = BITMAP _MOTIF_DRAG_RECEIVER_INFO(_MOTIF_DRAG_RECEIVER_INFO) = 0x6c, 0x0, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0 _NET_WM_SYNC_REQUEST_COUNTER(CARDINAL) = 23068677 _NET_WM_WINDOW_TYPE(ATOM) = _NET_WM_WINDOW_TYPE_DESKTOP _NET_WM_USER_TIME_WINDOW(WINDOW): window id # 0x1600004 WM_CLIENT_LEADER(WINDOW): window id # 0x1600001 _NET_WM_PID(CARDINAL) = 7787 WM_LOCALE_NAME(STRING) = "en_IE.UTF-8" WM_CLIENT_MACHINE(STRING) = "luke" WM_NORMAL_HINTS(WM_SIZE_HINTS): program specified location: 0, 0 program specified minimum size: 2560 by 1024 window gravity: NorthWest WM_PROTOCOLS(ATOM): protocols WM_DELETE_WINDOW, WM_TAKE_FOCUS, _NET_WM_PING, _NET_WM_SYNC_REQUEST WM_CLASS(STRING) = "xfdesktop", "Xfdesktop" WM_ICON_NAME(STRING) = "Desktop" _NET_WM_ICON_NAME(UTF8_STRING) = 0x44, 0x65, 0x73, 0x6b, 0x74, 0x6f, 0x70 WM_NAME(STRING) = "Desktop" _NET_WM_NAME(UTF8_STRING) = 0x44, 0x65, 0x73, 0x6b, 0x74, 0x6f, 0x70 izapolsky@luke:~$ xfdesktop --version This is xfdesktop version 4.6.1, running on Xfce 4.6.1. Built with GTK+ 2.14.4, linked with GTK+ 2.14.4. Build options: Desktop Menu: enabled Desktop Icons: enabled Desktop File Icons: enabled izapolsky@luke:~$
Huh, that's pretty bizarre. Please attach (not paste) output of xdpyinfo and 'xrandr --verbose'.
Created attachment 2344 Xrandr output
Created attachment 2345 xdpyinfo output
Also, probably stupid, but: can you select 'Single Image' instead of 'Image List' for that monitor and see if it still happens?
Well, I've tried it first - didn't work.
Ah-ha. Saturation of 0.0 means greyscale, effectively. Check your settings.
Thanks, that resolved problem. I never thought I am stupid enough for such pitfall.