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linuxwacom / input-wacom

Linux kernel driver for Wacom devices
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Huion H950P not working correctly: area incorrect and Pad not detected #395

Closed squeaktoy closed 11 months ago

squeaktoy commented 11 months ago

I'm running Gentoo, got libwacom 2.7.0, and INPUT_DEVICES="libinput wacom" My Linux version is 6.1.53 and I got xf86-input-wacom 1.2.0 as well

I have this custom config in /etc/X11/xorg.conf.d/50-tablet.conf

#
# InputClass sections for some tablets supported by the DIGImend kernel
# drivers. Organized into separate InputClass sections based on (one of) the
# advertised brands. Mostly because the MatchUSBID options would become too
# long otherwise.
#
Section "InputClass"
        Identifier "Huion tablets with Wacom driver"
        MatchUSBID "5543:006e|256c:006e|256c:006d"
        MatchDevicePath "/dev/input/event*"
#       MatchIsKeyboard "false"
        MatchIsTablet "true"
        Driver "wacom"
EndSection

Section "InputClass"
        Identifier "Tablet low-res touch controls with Wacom driver"
        MatchUSBID "256c:*"
        MatchDevicePath "/dev/input/event*"
        MatchTag "low_res_touch"
        Driver "wacom"
        Option "Suppress" "0"
EndSection

Section "InputClass"
        Identifier "Ugee/XP-Pen tablets with Wacom driver"
        MatchUSBID "28bd:007[1458]|28bd:0094|28bd:0042|5543:004[57]|5543:0081|5543:0004|5543:3031"
        MatchDevicePath "/dev/input/event*"
        Driver "wacom"
EndSection

Section "InputClass"
        Identifier "Ugtizer tablets with Wacom driver"
        MatchUSBID "2179:0053"
        MatchDevicePath "/dev/input/event*"
        Driver "wacom"
EndSection

Section "InputClass"
        Identifier "Yiynova tablets with Wacom driver"
        MatchUSBID "5543:004d"
        MatchDevicePath "/dev/input/event*"
        Driver "wacom"
EndSection

The tablet works, except the area is totally incorrect. The second vertical half of the tablet doesn't work, even though it does register events, the X never goes higher than 1349 in Krita somehow. This happens when I do xsetwacom list:

HID 256c:006d stylus                    id: 9   type: STYLUS
HID 256c:006d eraser                    id: 14  type: ERASER

Where is HID 256c:006d pad? Is it trying to gaslight me into thinking it was never there? Something is totally wrong here.

And when I do libinput list-devices I get this weird error:

event7  - HID 256c:006d: libinput bug: missing tablet capabilities: resolution. Ignoring this device.

Why is this happening? On Linux 5.15 the Huion H950P worked perfectly, and now it is ruined. Now I can't draw for Halloween :(

jigpu commented 11 months ago

If your tablet works again after downgrading to the 5.15 kernel, that strongly indicates a problem with the kernel driver. Especially because of the missing 'pad' device. The H950P is handled by the kernel's "uclogic" driver, not input-wacom so there isn't really any support we can provide, unfortunately.

It looks like you already found the "digimend" project, which I believe is the appropriate place to file issues with the uclogic driver. The developers over there should be better able to diagnose what is going wrong. I am going to close this issue so discussion is centered at https://github.com/DIGImend/digimend-kernel-drivers/issues/668