Unable to log in after update, both X and Wayland. (First time in more than two years!)

[MrLavender]

There is this SDDM issue from previous 2023-07-10 update but presumably you’d have run into that before now?

@philm

Black screen after login with SDDM 0.20

Check ~/.profile for any commands that don’t execute properly (but return non-zero exit code instead). May include ~/.bash_profile and .zprofile too. Downgrading to SDDM 0.19 also restores desktop after login.

The issue has been reported upstream.