Touchscreen crashes after using active pen for a few seconds

[EnderMk9]

After using the wacom bamboo pen for a few seconds in xournal++, both the pen and touchscreen stop working and I have to reboot for it to work again. Anyone knows why is this happening?

I have changed the nib of the pen and the problem is gone, it seem there is a problem with the digitizer that crashes the wacom driver with that nib.

Edit: Now it's happening again with the replaced nib.

[stuarthayhurst]

Probably best report this on an upstream Wacom project, my Lenovo Active Pen 2 works fine, so the problem is likely with the pen, your config, or it doesn't like the Yoga's digitiser.

Are you running Wayland or Xorg? I'm on Wayland, I haven't tested Xorg out.

[EnderMk9]

I'm using wayland with Kwin. I have found this issue that is exactly my problem but no replies from the developers
linuxwacom/input-wacom#335
It's strange because on windows it works flawlessly.

[tomsom]

Hmm, if I remember correctly I had the same issue a few months ago but it 'magically' fixed itself.. since then its working fine for me with lenovo pens and also with wayland/kwin and xournal. But I don't know what the issue was/how it was fixed

[soupglasses]

See #19

It is probably related to the digitizer not being configured and KWin handling that differently than GNOME. I am not sure if anyone has a full configuration made yet. (I personally have been quite busy and have not set it up personally).

[EnderMk9]

But while it's working, it works flawlessly for me, and kde recognises it in the settings, i don't see how the digitizer is not configured, furthermore, when it crashes, the touchscreen, which is unrelated to the digitizer (except that both are handled by the wacom driver) also crashes.

[soupglasses]

You can attempt to run echo "0" | sudo tee /sys/module/wacom/parameters/touch_arbitration and see if that helps. If that does not fix it, its probably unique compared to previous issues.

[soupglasses]

i don't see how the digitizer is not configured

In the dump your linked issue, the file libwacom.txt has the following code in it:

/dev/input/event6 is a tablet but not supported by libwacom
Failed to find any devices known to libwacom.

Essentially says that the tablet does not have any configuration known to the libwacom driver, and it is running off a generic driver for it.

Wacom has some documentation on how to write up your own Tablet Definition Files, which is what is required to get libwacom to recognize the digitzer fully. There is an example here for the 14ACN6.

This should only be "aesthetic", but may cause issues.

[EnderMk9]

I already tried disabling touch arbitration, but after a while it ended up crashing all the same, so I don't know what to make of it. There may be a problem with the configuration file, but i'd bet that is not the cause of this issue

[stuarthayhurst]

Well I've submitted an attempt here: linuxwacom/libwacom#549

No idea if that's comprehensive, I couldn't find docs for all the available configs, but it's a start

[stuarthayhurst]

That's merged. You can try adding the data/isdv4-52d5.tablet file to /usr/share/libwacom/ (might be different for your system, potentially /etc/libwacom?), then running sudo libwacom-update-db. If the device shows up in libwacom-list-local-devices, it's detected on your system.

[stuarthayhurst]

I was just going through the Wacom issue tracker, I saw your problem was fixed upstream, can this be closed?

[EnderMk9]

Well I'm still not sure it's fixed i would have to try to use the pen for a longer period to see if it was just a stroke of luck

[nemuibanila]

Still completely broken for me on 6.4.11

[soupglasses]

My experience a few months ago was that you can use it perfectly from a cold boot until you have closed the lid once. After that the active pen and touch gets really weird and crash happy.