Comment 10 for bug 1893302

I suddenly started experiencing this issue on Kubuntu 22.04.1 a few months after upgrading from 20.04 LTS. After almost a month of frustration, I discovered that pam was closing unexpectedly, causing the greeter to stop, and that that was the reason that sddm became unresponsive.

I came upon a workaround suggested in github sddm issue #1443:

loginctl enable-linger

Using this appears to prevent pam from closing out.

I hope that the cause of pam closing out can be found, or that sddm is updated to detect that the greeter has stopped without a user logging in.

Edit: forgot to ask whether pam closing is a systemd / loginctl issue?