I’m using the KDE desktop and upgraded today with a large Plasma 5.8.3 upgrade. I am using SDDM as my DM. After the upgrade completed successfully, I reboot to a blackscreen with a centered message box that displayed
" Configuration file “/var/lib/sddm/.config/sddm-greeterrc” not writable. Please contact your system administrator."
I clicked “ok” on the box and the SDDM DM came up, I logged in but went to a black screen with an “X” for a cursor.
I think I need to change the permissions on the file but am unsure of how to do this.
Any help is appreciated!