With some recent SDDM updates, I started experiencing this intermittently
despite enabling linger.
After digging around for a while, the commenting out the following lines in
/usr/lib/systemd/system/sddm.service seems to have cured the issue:
# Ordering
#Conflicts=plymouth-quit-wait.service
I suddenly started experiencing this issue on Kubuntu 22.04.1 a few
months after upgrading from 20.04 LTS. After pulling out most of my
hair, I also 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
