Emulated tablet is mishandled in openQA hardware tests

[marmarek]

Observation

openQA test in scenario qubesos-4.3-pull-requests-x86_64-system_tests_gui_tools@hw7 fails in
qui_widgets_clipboard

Mouse moves in wrong positions, for example trying to move to the right bottom corner moves it somewhere in the middle of the screen.

Reproducible

Fails since (at least) Build 2024110705-4.3

Expected result

Last good: 2024110421-4.3 (or more recent)

Further details

Always latest result in this scenario: latest

https://openqa.qubes-os.org/tests/117793#investigation shows interesting diff:

-xorg-x11-drv-wacom-1.2.2-2.fc41.x86_64
-xorg-x11-drv-wacom-serial-support-1.2.2-2.fc41.x86_64
+xorg-x11-drv-wacom-1.2.3-1.fc41.x86_64
+xorg-x11-drv-wacom-serial-support-1.2.3-1.fc41.x86_64

This looks relevant. Inspecting X log shows the tablet used libinput driver before and now it uses wacom driver.

Logs

Old (good):

[    34.405] (II) config/udev: Adding input device sys-usb: marmarek RPi4 USB Gadget (/dev/input/event6)
[    34.405] (**) sys-usb: marmarek RPi4 USB Gadget: Applying InputClass "evdev tablet catchall"
[    34.405] (**) sys-usb: marmarek RPi4 USB Gadget: Applying InputClass "libinput tablet catchall"
[    34.405] (II) Using input driver 'libinput' for 'sys-usb: marmarek RPi4 USB Gadget'
[    34.405] (**) sys-usb: marmarek RPi4 USB Gadget: always reports core events
[    34.405] (**) Option "Device" "/dev/input/event6"
[    34.406] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: is tagged by udev as: Tablet
[    36.097] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: tablet 'sys-usb: marmarek RPi4 USB Gadget' unknown to libwacom
[    36.097] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: device is a tablet
[    36.097] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: device removed
[    36.119] (**) Option "config_info" "udev:/sys/devices/virtual/input/input22/event6"
[    36.119] (II) XINPUT: Adding extended input device "sys-usb: marmarek RPi4 USB Gadget" (type: TABLET, id 12)
[    36.120] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: is tagged by udev as: Tablet
[    36.154] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: tablet 'sys-usb: marmarek RPi4 USB Gadget' unknown to libwacom
[    36.155] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: device is a tablet
[    36.155] (II) config/udev: Adding input device sys-usb: marmarek RPi4 USB Gadget (/dev/input/mouse2)
[    36.155] (II) No input driver specified, ignoring this device.
[    36.155] (II) This device may have been added with another device file.
[    36.155] (II) config/udev: Adding input device sys-usb: marmarek RPi4 USB Gadget Mouse (/dev/input/event7)
[    36.155] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: Applying InputClass "evdev pointer catchall"
[    36.155] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: Applying InputClass "libinput pointer catchall"
[    36.155] (II) Using input driver 'libinput' for 'sys-usb: marmarek RPi4 USB Gadget Mouse'
[    36.155] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: always reports core events
[    36.155] (**) Option "Device" "/dev/input/event7"
[    36.156] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: is tagged by udev as: Mouse
[    36.156] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: device is a pointer
[    36.156] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: device removed
...
[    37.782] (II) Using input driver 'libinput' for 'sys-usb: marmarek RPi4 USB Gadget'
[    37.782] (**) sys-usb: marmarek RPi4 USB Gadget: always reports core events
[    37.782] (**) Option "Device" "/dev/input/event6"
[    37.783] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: is tagged by udev as: Tablet
[    37.839] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: tablet 'sys-usb: marmarek RPi4 USB Gadget' unknown to libwacom
[    37.839] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: device is a tablet
[    37.839] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: device removed
[    37.853] (**) Option "config_info" "udev:/sys/devices/virtual/input/input22/event6"
[    37.853] (II) XINPUT: Adding extended input device "sys-usb: marmarek RPi4 USB Gadget" (type: TABLET, id 12)
[    37.854] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: is tagged by udev as: Tablet
[    37.890] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: tablet 'sys-usb: marmarek RPi4 USB Gadget' unknown to libwacom
[    37.890] (II) event6  - sys-usb: marmarek RPi4 USB Gadget: device is a tablet
[    37.891] (II) config/udev: removing device sys-usb: marmarek RPi4 USB Gadget Mouse
[    37.891] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: device removed
[    37.904] (II) UnloadModule: "libinput"
[    37.904] (II) config/udev: Adding input device sys-usb: marmarek RPi4 USB Gadget Mouse (/dev/input/event7)
[    37.904] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: Applying InputClass "evdev pointer catchall"
[    37.904] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: Applying InputClass "libinput pointer catchall"
[    37.904] (II) Using input driver 'libinput' for 'sys-usb: marmarek RPi4 USB Gadget Mouse'
[    37.904] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: always reports core events
[    37.904] (**) Option "Device" "/dev/input/event7"
[    37.904] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: is tagged by udev as: Mouse
[    37.904] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: device is a pointer
[    37.905] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: device removed
[    37.941] (II) libinput: sys-usb: marmarek RPi4 USB Gadget Mouse: Step value 0 was provided, libinput Fallback acceleration function is used.
[    37.941] (II) libinput: sys-usb: marmarek RPi4 USB Gadget Mouse: Step value 0 was provided, libinput Fallback acceleration function is used.
[    37.941] (II) libinput: sys-usb: marmarek RPi4 USB Gadget Mouse: Step value 0 was provided, libinput Fallback acceleration function is used.
[    37.941] (**) Option "config_info" "udev:/sys/devices/virtual/input/input23/event7"
[    37.941] (II) XINPUT: Adding extended input device "sys-usb: marmarek RPi4 USB Gadget Mouse" (type: MOUSE, id 13)
[    37.941] (**) Option "AccelerationScheme" "none"
[    37.941] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: (accel) selected scheme none/0
[    37.941] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: (accel) acceleration factor: 2.000
[    37.941] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: (accel) acceleration threshold: 4
[    37.941] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: is tagged by udev as: Mouse
[    37.941] (II) event7  - sys-usb: marmarek RPi4 USB Gadget Mouse: device is a pointer

New (broken):

[    79.849] (II) Using input driver 'wacom' for 'sys-usb: marmarek RPi4 USB Gadget'
[    79.849] (**) sys-usb: marmarek RPi4 USB Gadget: always reports core events
[    79.849] (**) Option "Device" "/dev/input/event6"
[    79.849] (II) wacom: sys-usb: marmarek RPi4 USB Gadget: type not specified, assuming 'stylus'.
[    79.849] (II) wacom: sys-usb: marmarek RPi4 USB Gadget: other types will be automatically added.
[    79.849] (**) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: Smooth panscrolling is enabled
[    79.849] (--) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: using pressure threshold of 851 for button 1
[    79.849] (**) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: panscroll is 0
[    79.849] (**) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: panscroll modified to 52
[    79.849] (--) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: maxX=1024 maxY=768 maxZ=0 resX=4000 resY=4000  tilt=enabled
[    79.849] (II) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: hotplugging dependent devices.
[    79.849] (II) wacom: sys-usb: marmarek RPi4 USB Gadget stylus: hotplugging completed.
[    79.923] (**) Option "config_info" "udev:/sys/devices/virtual/input/input23/event6"
[    79.923] (II) XINPUT: Adding extended input device "sys-usb: marmarek RPi4 USB Gadget stylus" (type: STYLUS, id 12)
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget stylus: (accel) keeping acceleration scheme 1
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget stylus: (accel) acceleration profile 0
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget stylus: (accel) acceleration factor: 2.000
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget stylus: (accel) acceleration threshold: 4
[    79.924] (II) config/udev: Adding input device sys-usb: marmarek RPi4 USB Gadget Mouse (/dev/input/event16)
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: Applying InputClass "evdev pointer catchall"
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: Applying InputClass "libinput pointer catchall"
[    79.924] (II) Using input driver 'libinput' for 'sys-usb: marmarek RPi4 USB Gadget Mouse'
[    79.924] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: always reports core events
[    79.924] (**) Option "Device" "/dev/input/event16"
[    79.925] (II) event16 - sys-usb: marmarek RPi4 USB Gadget Mouse: is tagged by udev as: Mouse
[    79.925] (II) event16 - sys-usb: marmarek RPi4 USB Gadget Mouse: device is a pointer
[    79.925] (II) event16 - sys-usb: marmarek RPi4 USB Gadget Mouse: device removed
[    79.964] (II) libinput: sys-usb: marmarek RPi4 USB Gadget Mouse: Step value 0 was provided, libinput Fallback acceleration function is used.
[    79.964] (II) libinput: sys-usb: marmarek RPi4 USB Gadget Mouse: Step value 0 was provided, libinput Fallback acceleration function is used.
[    79.964] (II) libinput: sys-usb: marmarek RPi4 USB Gadget Mouse: Step value 0 was provided, libinput Fallback acceleration function is used.
[    79.964] (**) Option "config_info" "udev:/sys/devices/virtual/input/input24/event16"
[    79.964] (II) XINPUT: Adding extended input device "sys-usb: marmarek RPi4 USB Gadget Mouse" (type: MOUSE, id 13)
[    79.964] (**) Option "AccelerationScheme" "none"
[    79.965] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: (accel) selected scheme none/0
[    79.965] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: (accel) acceleration factor: 2.000
[    79.965] (**) sys-usb: marmarek RPi4 USB Gadget Mouse: (accel) acceleration threshold: 4
[    79.966] (II) event16 - sys-usb: marmarek RPi4 USB Gadget Mouse: is tagged by udev as: Mouse
[    79.966] (II) event16 - sys-usb: marmarek RPi4 USB Gadget Mouse: device is a pointer

[marmarek]

I'm not sure yet if the real issue is choosing wrong driver, or maybe "wacom" is the right driver but the emulated device has some incorrect metadata (that didn't caused issues with libinput device).
The issue affect only device emulated by openQA. The one emulated by PiKVM works fine.

[marmarek]

The update includes "Bind to all tablets if this driver is installed" change: https://src.fedoraproject.org/rpms/xorg-x11-drv-wacom/c/534dbfcc8170aa1c6685048227a722fe83104723?branch=rawhide

[marmarek]

https://bodhi.fedoraproject.org/updates/FEDORA-2024-d84f47c97d - pushed to stable 10h ago. The tests on the other host (hw1) didn't fail because this update didn't reach the other host yet (message on bodhi says the update may take up to 24h to propagate to mirrors).

[marmarek]

PiKVM device isn't detected as a tablet, but as a mouse that happens report absolute position. This makes it keep using libinput driver instead of the wacom driver. The absolute mouse required special handling in input-proxy to work, but maybe that's a better approach than working around the wacom driver...