[SOLVED] Minimal black screen after boot after Plasma 6.8 update

Fesiug · 2026-10-17 05:11:42

After a full system upgrade that included Plasma 6.8, booting my computer would lead to a black screen with a text cursor at the top-left. It appears after all the systemd services finish starting and where I'd usually end up at the login screen.
I had to downgrade my system using the Arch Linux Archive to a snapshot from October 15th and am using that now. I tried downgrading plasma-login-manager to 6.7.5 with a 6.8 system, but it made no difference.
I'm using nvidia-open graphics drivers. Please feel free to ask for any additional system information.

Edit: Solved, I had a outdated version of a system package that broke KWin.

Last edited by Fesiug (Today 12:18:38)

Fesiug · 2026-10-17 05:15:19

Additionally, I couldn't use CTRL+ALT+F1 through F6 to switch TTYs, for whatever reason. I also couldn't use startplasma-wayland, as it would wait for a little before outputting something about shutting itself down.

killertofus · 2026-10-17 06:13:32

what nvidia cpu/gpu do you have

lspci -k -d ::03xx | nc termbin.com 9999

can you reboot via REISUB

please post a journal of the boot

sudo journalctl -b | nc termbin.com 9999

for the previous (-1) one.

 sudo journalctl -b -1 | nc termbin.com 9999

Last edited by killertofus (2026-10-17 06:23:03)

Fesiug · 2026-10-17 20:25:37

I've got an AMD Ryzen 5 3600 and an NVIDIA GTX 1650 Super.

https://termbin.com/jzryh

2b:00.0 VGA compatible controller: NVIDIA Corporation TU116 [GeForce GTX 1650 SUPER] (rev a1)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 8d95
	Kernel driver in use: nvidia
	Kernel modules: nouveau, nvidia_drm, nvidia

Yes, I could reboot via REISUB.

Looking at it, the greeter or login manager and the plasmashell (when I tried doing startplasma-wayland) kept failing and core dumping

I messed around five times trying to get it to work, here there are sorted from earliest to latest.
https://termbin.com/2w9sn
https://termbin.com/bf53j
https://termbin.com/5i1l
https://termbin.com/p1gs
https://termbin.com/qgwl

killertofus · 2026-10-17 20:30:45

does the non zen kernel work?

seth · 2026-10-17 21:35:37

Oct 17 00:14:35 fesiug-homearch kwin_wayland[777]: /usr/bin/kwin_wayland: symbol lookup error: /usr/lib/libkwin.so.6: undefined symbol: _ZN12KGlobalAccel25setInverseShortcutActionsEP7QActionS1_

Sounds related to https://bbs.archlinux.org/viewtopic.php?id=315237

pacman -Qikk kwin kglobalaccel kglobalacceld

Fesiug · Today 01:23:46

I found my issue. It was related to my installation. I had some git version of the kglobalaccel package. Thank you for helping me find it.

kglobalaccel-6.31.0-1 and kglobalaccel-git-6.24.0_r866.g3d96bc7-1 are in conflict. Remove kglobalaccel-git? [y/N]

seth · Today 07:07:13

\o/
Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

Fesiug · Today 12:19:20

Done! Thanks

Arch Linux

#1 2026-10-17 05:11:42

[SOLVED] Minimal black screen after boot after Plasma 6.8 update

#2 2026-10-17 05:15:19

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#3 2026-10-17 06:13:32

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#4 2026-10-17 20:25:37

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#5 2026-10-17 20:30:45

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#6 2026-10-17 21:35:37

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#7 Today 01:23:46

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#8 Today 07:07:13

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

#9 Today 12:19:20

Re: [SOLVED] Minimal black screen after boot after Plasma 6.8 update

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