I'm on UbuntuStudio 20.04 and had similar issues with lightdm I then switched to sddm and exactly run into the same bug sporadically:
Nov 01 14:33:09 marco sddm-greeter[1127]: Message received from daemon: Capabilities
Nov 01 14:33:09 marco sddm-greeter[1127]: Message received from daemon: HostName
Nov 01 14:33:12 marco sddm-helper[1114]: [PAM] Closing session
Nov 01 14:33:12 marco sddm-helper[1114]: pam_unix(sddm-greeter:session): session closed for user sddm
Nov 01 14:33:12 marco sddm-helper[1114]: [PAM] Ended.
Nov 01 14:33:12 marco sddm[1007]: Auth: sddm-helper exited with 9
Nov 01 14:33:12 marco sddm[1007]: Greeter stopped.
The mouse still works but the sddm screen is basically unresponsive.
I'm on UbuntuStudio 20.04 and had similar issues with lightdm I then switched to sddm and exactly run into the same bug sporadically:
Nov 01 14:33:09 marco sddm-greeter[1127]: Message received from daemon: Capabilities sddm-greeter: session) : session closed for user sddm
Nov 01 14:33:09 marco sddm-greeter[1127]: Message received from daemon: HostName
Nov 01 14:33:12 marco sddm-helper[1114]: [PAM] Closing session
Nov 01 14:33:12 marco sddm-helper[1114]: pam_unix(
Nov 01 14:33:12 marco sddm-helper[1114]: [PAM] Ended.
Nov 01 14:33:12 marco sddm[1007]: Auth: sddm-helper exited with 9
Nov 01 14:33:12 marco sddm[1007]: Greeter stopped.
The mouse still works but the sddm screen is basically unresponsive.
Is there any news on this?