On Debian 9 with xfce4-settings 4.12.1-1, the touchpad of an Acer Aspire V (automatically detected using the i2c_hid driver and shown in `xinput list` as 'SYN1B7F:00 06CB:74DE Touchpad') shows up in the mouse settings, but does not have a "Touchpad" tab to switch between two-finger and border scrolling. The difference I observed between that and working cases was that the device shows up in xinput with several "libinput" properties, but does not have the "Synaptic" ones. I am not sure whether this was not covered by #11469 or whether it's an independent regression; I should be able to provide more information about the particular case if any further is needed. The output of `xinput list-props` is: $ xinput list-props 'SYN1B7F:00 06CB:74DE Touchpad' Device 'SYN1B7F:00 06CB:74DE Touchpad': Device Enabled (140): 1 Coordinate Transformation Matrix (142): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000 libinput Tapping Enabled (278): 0 libinput Tapping Enabled Default (279): 0 libinput Tapping Drag Enabled (280): 1 libinput Tapping Drag Enabled Default (281): 1 libinput Tapping Drag Lock Enabled (282): 0 libinput Tapping Drag Lock Enabled Default (283): 0 libinput Tapping Button Mapping Enabled (284): 1, 0 libinput Tapping Button Mapping Default (285): 1, 0 libinput Accel Speed (286): 0.000000 libinput Accel Speed Default (287): 0.000000 libinput Natural Scrolling Enabled (288): 0 libinput Natural Scrolling Enabled Default (289): 0 libinput Send Events Modes Available (263): 1, 1 libinput Send Events Mode Enabled (264): 0, 0 libinput Send Events Mode Enabled Default (265): 0, 0 libinput Left Handed Enabled (290): 0 libinput Left Handed Enabled Default (291): 0 libinput Scroll Methods Available (292): 1, 1, 0 libinput Scroll Method Enabled (293): 1, 0, 0 libinput Scroll Method Enabled Default (294): 1, 0, 0 libinput Click Methods Available (295): 1, 1 libinput Click Method Enabled (296): 1, 0 libinput Click Method Enabled Default (297): 1, 0 libinput Middle Emulation Enabled (298): 0 libinput Middle Emulation Enabled Default (299): 0 libinput Disable While Typing Enabled (300): 1 libinput Disable While Typing Enabled Default (301): 1 Device Node (266): "/dev/input/event14" Device Product ID (267): 1739, 29918 libinput Drag Lock Buttons (302): <no items> libinput Horizontal Scroll Enabled (303): 1
While there is a (reasonably functional) workaround at https://gist.github.com/829c63068dcd30dcb3d25c00aed6f0ec that involves hardcoding the tapping behavior on a system level (My bug #14085 is just a duplicate of this bug) I want to note that, while this bug IS present on Debian Stretch, with xfce4==4.12.3 and xfce4-settings==4.12.1-1: > xfce4-settings-manager -V | head -n 1 > xfce4-settings-manager 4.12.1 (Xfce 4.12) it SEEMS to be fixed in xfce4-settings==4.12.3-0ubuntu1 (Bionic Beaver stock-OOTB version): > xfce4-settings-manager -V | head -n 1 > xfce4-settings-manager 4.12.3 (Xfce 4.12) On the Ubuntu, there IS actually an appropriate section of the touchpad; on the Debian, this bug REMAINS and is VALID HOWEVER, I want to note that, since I can't find a newer version of the package for Debian, I can't confirm if it's just the newer version in which it's fixed, or if it's a packaging issue (or maybe even just some kind of downstream fixes by Canonical!)
*** Bug 14085 has been marked as a duplicate of this bug. ***
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