How to make drawing tablet work as an input device?

[Remi-Godin]

Hopefully this is the right place to ask, and I'm not sure if this is an issue on my end, or an issue with Cosmic or Pop!_OS version 24.04, so did not want to open an issue for it.

This is on a fresh install of Pop!_OS 24.04 with Cosmic DE. My Huion 1060p, which was previously working on Pop!_OS version 22.04, is not working anymore, and I'm looking for help to make it work again.

I have installed the official Huion drivers, and libinput is detecting events properly, would it be location, tilt, pressure, everything is seemingly detected properly. The buttons on the tablet are working, and the buttons on the pen itself are working, but the pen is not working as an input device to control the mouse or be used as a drawing/sculpting device in software.

Here is an example output from libinput:

                                                          X     Y                 
 event29  TABLET_TOOL_AXIS        +153.267s		6.83*/3.86*	tilt: -0.53/-0.53	pressure: 0.68*
 event29  TABLET_TOOL_AXIS        +153.272s		6.81*/3.91*	tilt: -0.53/-0.53	pressure: 0.54*
 event29  TABLET_TOOL_AXIS        +153.277s		6.79*/3.96*	tilt: -0.53/-0.53	pressure: 0.40*
 event29  TABLET_TOOL_AXIS        +153.281s		6.78*/4.01*	tilt: -0.53/-0.53	pressure: 0.26*
 event29  TABLET_TOOL_AXIS        +153.286s		6.77*/4.05*	tilt: -0.53/-0.53	pressure: 0.14*
 event29  TABLET_TOOL_AXIS        +153.291s		6.76*/4.10*	tilt: -0.53/-0.53	pressure: 0.05*

I marked the X and Y axis for reference. X goes from 0.00 to 7.85, and Y goes from 0.00 to 4.92, with (0.00,0.00) being the top left corner of the tablet, and (7.85,4.92) being the bottom right.

I would appreciate any help into figuring out how to make it work. I don't know if I have to set something up using libinput, but can't seem to find anything on this subject.

Thanks!

[Drakulix]

Your tablet currently needs to be manually map to an output.

In the interest of not repeating myself, here is a link to an issue, where I explained that yesterday: pop-os/cosmic-comp#1495

Note that the tablet support definitely is not fleshed out so far!

[Remi-Godin]

Are you kidding me! That was it?! Thanks so much!!! Been scratching my head for a few days before coming here.

I searched for "drawing tablet" and did not find any relevant issues or discussions; I should have looked for "graphics tablet" too, but I figured graphics tablet are usually describing tablets with a built-in display, as opposed to a drawing "pad".

Solution

For the sake of completing this thread for future searchers, the only thing I did (other than install the official Huion drivers) was add the input_devices file to ~/.config/cosmic/com.system76.CosmicComp/v1/ as described in pop-os/cosmic-comp#1495, and only added the following entry:

{
	"HUION 256C PEN STYLUS": ( // Your device name goes here
		state: Enabled,
		map_to_output: Some("DP-1") // Your monitor name goes here
	)
}

This was after confirming the tablet worked and device name through libinput debug-events and libinput list-devices , and the monitor name through xrandr --listactivemonitors.

No reboot needed or anything.