PSA: Update to Plasma 6.3 can make Wayland session unusable if you have configured monitor ICC profiles

https://bugs.kde.org/show_bug.cgi?id=499789

Update: Bug fixed in Plasma 6.3.1


Just posting this since I spent over an hour trying to figure out why I couldn't open my desktop today.. After booting and logging in I got a black screen. Switched to a terminal but did not see any obvious errors in the logs.

Not fixed for Fedora 41 KDE yet, so I installed plasma-workspace-x11 to use in the meanwhile. Anyone who hasn't updated to 6.3 yet could probably change their display settings to not use ICC profiles to avoid it.___

64 points · 7 comments · view on lemmy.world

7 Comments

aksdb@lemmy.world · 3 pts · 1y (1 reply)

Damn, so that was the issue. I spent 2h trying around with different packages I suspected to cause an error during start. Then I desperately moved my .config dir out of the way to rule out an incompatible config and lo and behold... it worked. I then moved it back and tried to delete configs more finegranular. After a few iterations without success I just removed almost all kde and plasma related configs and reconfigured everything from scratch. I should have scrolled through my feed earlier 😁

fhein@lemmy.world · 2 pts · 1y

It was surprisingly difficult to find, the majority of comments about 6.3 were people saying it was working great, but I guess most people don't use ICC profiles for their monitors.

juipeltje@lemmy.world · 3 pts · 1y (2 replies)

This is kinda unrelated to the post but do icc profiles now generally work on wayland? I thought last time i read about it it didn't work yet but maybe i'm mistaken.

jrgd@lemm.ee · 7 pts · 1y (1 reply)

KDE has had ICC support implemented for a while now in Wayland. The necessary protocol for ICC support/color management in Wayland recently got merged, so the next release of many popular compositors (plasma 6.3 for KDE) will be protocol-compliant.

juipeltje@lemmy.world · 1 pts · 1y

That's great, thanks for the info!

Kusimulkku@lemm.ee · 3 pts · 1y

This is the sort of shit that btrfs snapshots (snapper) was made for. Boot after update, something is borked, no obvious problem or solution, fuck this take me back

Strit@lemmy.linuxuserspace.show · 2 pts · 1y

I had something similar happen in Plasma 6.1 and 6.2. After I turned off the dccutils support in powerdevil, I have not had the issue since. My desktop is not a laptop, so it's always powered, same with screen, so I don't need fancy power profiles.