[Wayland-bugs] [Bug 100043] non-Wacom tablets are not supported in xf86-input-libinput

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100043

--- Comment #7 from s at ecloud.org <s at ecloud.org> ---
I didn't figure out this hwdb/modalias mess yet.

$ find /sys | grep modalias | grep 5543
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.1/2-1.1.2/2-1.1.2:1.0/0003:5543:0004.0026/modalias
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.1/2-1.1.2/2-1.1.2:1.0/0003:5543:0004.0026/input/input74/modalias
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.1/2-1.1.2/2-1.1.2:1.0/0003:5543:0004.0026/input/input75/modalias

$ cat
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.1/2-1.1.2/2-1.1.2:1.0/0003:5543:0004.0026/modalias
hid:b0003g0000v00005543p00000004

$ systemd-hwdb query b0003g0000v00005543p00000004
<nothing>

(tried a few more variations too)

Now I see a few existing rules in /usr/lib/udev/hwdb.d/60-evdev.hwdb have stuff
like 

#  Macbook2,1 (late 2006), single-button touchpad
evdev:input:b0003v05ACp021B*

(and even more of them are based on DMI, that's irrelevant here, right?) so I'm
guessing b0003 is a specific bus, but that doesn't make sense to specify for a
pluggable USB device.  So maybe I need to write a rule something like

# Trust TB-5300 tablet
evdev:input:v5543p0004*
 EVDEV_ABS_00=256:1471:12
 EVDEV_ABS_01=256:831:12

but don't have much of an idea what numbers to put there yet.

As for digimend, I hadn't heard of it until now.

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