Arch Linux

ergya

Member

Registered: 2012-12-01

Posts: 16

SDDM not starting after upgrade from linux-5.15.8 to 5.16.arch1-1

Hi, today I had a larger upgrade and after rebooting  SDDM started erroring. The first symptom I had was when systemd was asking the disk encryption password the console did not change the "resolution" (my eyes got used to that it usually happens around that time on my computer). I typed in the password and nothing happened. I saw usual boot disk activity by looking at the LED so my computer was doing stuffs behind the scenes but the login screen did not come up.

I use AMDGPU with an older ATI Radeon 7990 card, SDDM, KDE...

Here are the relevant errors I saw when executing journalctl (I also checked dmesg but did not see anything suspicious):

jan 16 17:05:57 xcomputer sddm[502]: Initializing...
jan 16 17:05:57 xcomputer sddm[502]: Starting...
jan 16 17:05:57 xcomputer sddm[502]: Logind interface found
jan 16 17:05:57 xcomputer sddm[502]: Adding new display on vt 1 ...
jan 16 17:05:57 xcomputer sddm[502]: Loading theme configuration from ""
jan 16 17:05:57 xcomputer sddm[502]: Display server starting...
jan 16 17:05:57 xcomputer sddm[502]: Adding cookie to "/var/run/sddm/{57665924-7ab3-4993-943d-0cdc0925768f}"
jan 16 17:05:57 xcomputer sddm[502]: Running: /usr/bin/X -nolisten tcp -background none -seat seat0 vt1 -auth /var/run/sddm/{57665924-7ab3-4993-943d-0cdc0925768f} -noreset -d>
jan 16 17:05:57 xcomputer sddm[502]: Failed to read display number from pipe
jan 16 17:05:57 xcomputer sddm[502]: Display server stopping...
jan 16 17:05:57 xcomputer sddm[502]: Attempt 1 starting the Display server on vt 1 failed
jan 16 17:05:59 xcomputer sddm[502]: Display server starting...
jan 16 17:05:59 xcomputer sddm[502]: Adding cookie to "/var/run/sddm/{57665924-7ab3-4993-943d-0cdc0925768f}"
jan 16 17:05:59 xcomputer sddm[502]: Running: /usr/bin/X -nolisten tcp -background none -seat seat0 vt1 -auth /var/run/sddm/{57665924-7ab3-4993-943d-0cdc0925768f} -noreset -d>
jan 16 17:05:59 xcomputer sddm[502]: Failed to read display number from pipe
jan 16 17:05:59 xcomputer sddm[502]: Display server stopping...
jan 16 17:05:59 xcomputer sddm[502]: Attempt 2 starting the Display server on vt 1 failed

I tried early KMS start but did not help: https://wiki.archlinux.org/title/Kernel … _KMS_start

After that I started shooting in the dark and started downgrading packages, first I downgraded these:

sudo pacman -U mesa-21.3.2-1-x86_64.pkg.tar.zst kwayland-5.89.0-1-x86_64.pkg.tar.zst kwayland-server-5.23.4-1-x86_64.pkg.tar.zst libva-mesa-driver-21.3.2-1-x86_64.pkg.tar.zst linux-5.15.8.arch1-1-x86_64.pkg.tar.zst linux-headers-5.15.8.arch1-1-x86_64.pkg.tar.zst xorg-server-21.1.2-2-x86_64.pkg.tar.zst xorg-server-common-21.1.2-2-x86_64.pkg.tar.zst

And things started working. Eventually I updated back everything other than linux + linux-headers so I think something somewhere there started causing this. As of now I am running on 5.15.8-arch1-1 again and I had 3 successful start since then.

Last edited by ergya (2022-01-16 17:45:04)

Lone_Wolf

Member

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,911

Re: SDDM not starting after upgrade from linux-5.15.8 to 5.16.arch1-1

I use AMDGPU with an older ATI Radeon 7990 card

Is that a card with a tahiti chipset ?

see https://bbs.archlinux.org/viewtopic.php?id=273164 or https://bbs.archlinux.org/viewtopic.php?id=273100

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

(A works at time B)  && (time C > time B ) ≠  (A works at time C)

ergya

Member

Registered: 2012-12-01

Posts: 16

Re: SDDM not starting after upgrade from linux-5.15.8 to 5.16.arch1-1

Thanks for the links. Yes, it is practically 2 Tahiti GPUs on 1 card. I'll follow the bug link to see when it will be fixed.

Should I mark this solved?