XPS 9710 - keyboard and trackpad stop accepting keys randomly

wzrdtales · 2021-09-14 20:53:08

Hey there

I tried for the couple of last weeks to track down the issue with the new Dell XPS 9710 (17) and the keyboard and trackpad random stopping to work.

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Edit 1:

So I tested another thing right now, which seems to isolate the problem a bit more. When I restart GDM, the keyboard is becoming functional again immediately.

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Stopping to work means in that case. The keyboard works, it lights up if you press a key, but Linux is not responding. It does not seem to be a problem with gnome, since also cntrl+f3 does not send me off to tty. There are no real logs to this in dmesg, or in the journal, I tried quite some stuff to find the issue, but didn't got it yet.

The last thing I did which surprised me a lot. When the keyboard was unfunctional I started (over the touchscreen which always still works) evtest on the keyboard input and trackpad input. And surprise, keypresses result in events! But still nothing happens, so they are straightforward *ignored*.

I suspect that might be a kernel issue, but might be as well very wrong.

So now I am here again, if anyone has any direction how I can gather more information to finally get rid of this problem, please instruct me! If anyone already has an Idea, will be happy to try it out

Last edited by wzrdtales (2021-09-14 21:20:14)

wzrdtales · 2021-09-16 18:31:13

No one any Idea how to get more info out of gdm and why it stops interpreting the input signals?

wzrdtales · 2021-09-16 20:10:04

Some other things I noticed: If I restart via systemctl restart gdm, gdm once, I don't only gain a functioning system, but I loose also the 3 finger swipe functionality on the trackpad. However after restarting gdm once, keyboard and trackpad stay stable and available, only the swipe gestures with 3 fingers are not coming back.

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Edit:

Turns out when I restart gdm with that method it is logging me in with x11 instead of wayland. So it is a wayland problem then... .

Last edited by wzrdtales (2021-09-16 20:12:13)

wzrdtales · 2021-09-16 20:39:32

Ok found something interesting. Intel-hid Issues a tablet mode status switch, even though this laptop is not a convertible.

wzrdtales · 2021-09-16 20:51:57

Yes this is the problem, confirmed it multiple times. At some random point it is issuing

-event257 SWITCH_TOGGLE +496.842s switch tablet-mode state 1

And the keyboard and trackpad stop working. So a libinput bug or firmware bug.

seth · 2021-09-17 06:11:01

https://gitlab.freedesktop.org/libinput … issues/413

wzrdtales · 2021-09-21 08:10:29

wrong issue @seth

I tracked down the problem and here is the actual issue with the upcoming fix:
https://gitlab.freedesktop.org/libinput … issues/662

Arch Linux

#1 2021-09-14 20:53:08

XPS 9710 - keyboard and trackpad stop accepting keys randomly

#2 2021-09-16 18:31:13

Re: XPS 9710 - keyboard and trackpad stop accepting keys randomly

#3 2021-09-16 20:10:04

Re: XPS 9710 - keyboard and trackpad stop accepting keys randomly

#4 2021-09-16 20:39:32

Re: XPS 9710 - keyboard and trackpad stop accepting keys randomly

#5 2021-09-16 20:51:57

Re: XPS 9710 - keyboard and trackpad stop accepting keys randomly

#6 2021-09-17 06:11:01

Re: XPS 9710 - keyboard and trackpad stop accepting keys randomly

#7 2021-09-21 08:10:29

Re: XPS 9710 - keyboard and trackpad stop accepting keys randomly

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