I see the following in Xorg.0.log:
[ 15171.706] (II) config/udev: Adding input device Network Tablet (/dev/input/event17)
[ 15171.706] () Network Tablet: Applying InputClass “evdev tablet catchall”
[ 15171.706] () Network Tablet: Applying InputClass “libinput tablet catchall”
[ 15171.706] (II) Using input driver ‘libinput’ for ‘Network Tablet’
[ 15171.706] () Network Tablet: always reports core events
[ 15171.706] () Option “Device” “/dev/input/event17”
[ 15171.707] (**) Option “_source” “server/udev”
[ 15171.707] (II) event17 - (II) Network Tablet: (II) is tagged by udev as: Tablet
[ 15171.707] (EE) event17 - (EE) Network Tablet: (EE) libinput bug: device does not meet tablet criteria. Ignoring this device.
[ 15171.707] (II) event17 - (II) Network Tablet: (II) device is a tablet
[ 15171.748] (II) event17 - failed to create input device ‘/dev/input/event17’.
[ 15171.748] (EE) libinput: Network Tablet: Failed to create a device for /dev/input/event17
[ 15171.748] (EE) PreInit returned 2 for “Network Tablet”
[ 15171.748] (II) UnloadModule: “libinput”
In another topic I found a 10-evdev.conf file that I tried out, but adding it to my setup did not change anything.
Any other ideas?