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.
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.