[SOLVED]Keyboard not working in KDE login screen after update

imargonis · 2024-02-18 22:01:46

Hi,

I've just updated my desktop (I think it was a few weeks since my last update).

Before restarting my system I also (stupidly?) removed a few orphaned packages (I do not remember what exactly, I think it is irrelevant by I mention it to be accurate).

After restarting I come to the KDE login screen but the keyboard does not work. The mouse works but I cannot click on anything (clicking on restart button for example does not do anything).

I cannot switch to console or whatever, nothing on keyboard works. I tried with another keyboard and the result was the same. Which was to be expected since the keyboard works up until I get to the KDE login screen (BIOS, live CD, everywhere it works).

I had an old live CD hanging around and used it to chroot into the system. I ran pacman -Syu again but there was nothing needing update (as I guess was expected).

I am not sure exactly where I have to look to fix this.

Last edited by imargonis (2024-02-18 23:38:09)

seth · 2024-02-18 22:10:33

Test the behavior on the multi-user.target and w/ the LTS kernel.
Can you ssh into the system? (otherwise it's gonna be tricky to get a journal from the broken boot)

imargonis · 2024-02-18 22:22:28

I am not sure what you mean with your 1st sentence.

About the 2nd I am not sure how I would go about to ssh into the system. I tried (from my laptop) to do ssh username@ip but it said connection refused.

However I am chrooted as I said in my system and I was just looking at the pacman log to see what I removed (thinking about reinstalling to see if that was the problem).

What journal should I look into?

seth · 2024-02-18 22:29:19

2n link below.
The LTS kernel is this here: https://archlinux.org/packages/core/x86_64/linux-lts/

You'd first and foremost install and enable the sshd service, https://wiki.archlinux.org/title/OpenSSH#Server_usage
Chroot won't help if you reboot w/ the power button, because that'll lose most of the journal.

imargonis · 2024-02-18 22:39:55

Ok, so I accessed journalctl and it seems there is a core dump by sddm-greeter. It seems the login crashes. But I do not know why.

The radeonsi_dri.so is referenced though.

Last edited by imargonis (2024-02-18 22:43:47)

seth · 2024-02-18 23:03:13

Please post your complete system journal, eg. for the boot:

sudo journalctl -b | curl -F 'file=@-' 0x0.st

imargonis · 2024-02-18 23:14:39

So, this is actually the output of journalctl -b -1 (just -b was empty)

https://0x0.st/HnwY.txt

seth · 2024-02-18 23:28:06

That looks like the mesa24 bug, downgrade to 23.3.5-1
If it's no longer in the cache, see https://wiki.archlinux.org/title/Arch_Linux_Archive

Edit: you can alteratively test

Feb 19 00:26:08 marg-desktop kernel: amdgpu 0000:01:00.0: amdgpu: Use radeon.cik_support=0 amdgpu.cik_support=1 to override.

to use the amdgpu module - whther this can sidestep the mesa issue has afaik not yet been reported.

Last edited by seth (2024-02-18 23:30:35)

imargonis · 2024-02-18 23:30:39

So I downgraded mesa and now everything seems to be ok.

I followed the advice from here https://bbs.archlinux.org/viewtopic.php?id=292988.
But it also reminded me of a similar problem I had a while back (with black screen) where the culprit was mesa.

And this is one of the reasons why I am sometimes hesitant to update my system. Because I do not know if problems such as this are resolved. I am pretty sure I had made a few updates after my black screen problem so this must be either a regression or a new problem.

imargonis · 2024-02-18 23:32:57

seth wrote:

That looks like the mesa24 bug, downgrade to 23.3.5-1
If it's no longer in the cache, see https://wiki.archlinux.org/title/Arch_Linux_Archive
Edit: you can alteratively test
Feb 19 00:26:08 marg-desktop kernel: amdgpu 0000:01:00.0: amdgpu: Use radeon.cik_support=0 amdgpu.cik_support=1 to override.
to use the amdgpu module - whther this can sidestep the mesa issue has afaik not yet been reported.

So it seems at the same time you were writing your comment I was already doing the downgrade (to a slightly older version of mesa (23.3.3. something) and had begun writing my comment.

Anyway thank you for your time. I guess I will mark as solved if I find out how to do it.

Last edited by imargonis (2024-02-18 23:36:28)

Inxsible · 2024-02-18 23:57:57

I had a similar issue where my sway would start up with only a grey screen and a mouse cursor. The mouse wouldn't work nor would the keyboard. About 15 seconds later, it would log me out back to tty. I could login on a different tty just fine. The errors in the swaylog indicated dbus issues which were different in each run but I thought it could be because of the dbus-broker change and I tried a bunch of things including moving back to dbus-daemon-unit and downgrading the linux package to 6.7.4 to no avail.

Came here to create a post and saw this thread and thought I might as well give mesa downgrade a whirl and sure enough it worked. So mesa 1:24 is causing issues with sway as well.

Last edited by Inxsible (2024-02-18 23:59:20)

seth · 2024-02-19 08:11:27

mesa 24 is causing issues w/ older radeon GPUs - if you're eligible for si_support or cik_support in amdgpu, you could also test that.

Inxsible · 2024-03-01 15:29:05

just fyi, This has been fixed with the latest update to mesa 1:24.0.2-1

Last edited by Inxsible (2024-03-01 15:29:16)

ewaller · 2024-03-01 17:03:16

Hey Inxsible,
Always a pleasure. How are things with you?

Arch Linux

#1 2024-02-18 22:01:46

[SOLVED]Keyboard not working in KDE login screen after update

#2 2024-02-18 22:10:33

Re: [SOLVED]Keyboard not working in KDE login screen after update

#3 2024-02-18 22:22:28

Re: [SOLVED]Keyboard not working in KDE login screen after update

#4 2024-02-18 22:29:19

Re: [SOLVED]Keyboard not working in KDE login screen after update

#5 2024-02-18 22:39:55

Re: [SOLVED]Keyboard not working in KDE login screen after update

#6 2024-02-18 23:03:13

Re: [SOLVED]Keyboard not working in KDE login screen after update

#7 2024-02-18 23:14:39

Re: [SOLVED]Keyboard not working in KDE login screen after update

#8 2024-02-18 23:28:06

Re: [SOLVED]Keyboard not working in KDE login screen after update

#9 2024-02-18 23:30:39

Re: [SOLVED]Keyboard not working in KDE login screen after update

#10 2024-02-18 23:32:57

Re: [SOLVED]Keyboard not working in KDE login screen after update

#11 2024-02-18 23:57:57

Re: [SOLVED]Keyboard not working in KDE login screen after update

#12 2024-02-19 08:11:27

Re: [SOLVED]Keyboard not working in KDE login screen after update

#13 2024-03-01 15:29:05

Re: [SOLVED]Keyboard not working in KDE login screen after update

#14 2024-03-01 17:03:16

Re: [SOLVED]Keyboard not working in KDE login screen after update

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