Per https://github.com/OpenPrinting/system-config-
printer/issues/175#issuecomment-627964091 there is a possible solution
even with how systemd works today, marking as Invalid for systemd.
** Changed in: systemd (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1877528
Title:
Applet does not terminate at end of X desktop session
Status in System Config Printer:
New
Status in lightdm package in Ubuntu:
New
Status in sddm package in Ubuntu:
New
Status in system-config-printer package in Ubuntu:
Triaged
Status in systemd package in Ubuntu:
Invalid
Status in system-config-printer package in Debian:
Unknown
Bug description:
This concerns system-config-printer 1.5.12-0ubuntu1 in Ubuntu focal.
I log into the Xfce desktop, and then logout. The screen returns to
the LightDM login screen.
A few minutes later, "loginctl list-sessions" shows the following:
SESSION UID USER SEAT TTY
9 0 root
c2 1000 skunk seat0
c3 116 lightdm seat0
3 sessions listed.
Output from "loginctl session-status c2":
c2 - skunk (1000)
Since: Fri 2020-05-08 03:09:05 EDT; 9min ago
Leader: 2530
Seat: seat0; vc7
Display: :0
Service: lightdm; type x11; class user
Desktop: xubuntu
State: closing
Unit: session-c2.scope
└─2856 /usr/bin/python3
/usr/share/system-config-printer/applet.py
This process sticks around forever until I kill it, or its parent
"systemd --user" process. Only then does the session disappear from
list-sessions.
When I run "session-status" while I'm logged in, I see a list of
nearly 30 desktop-related processes. All of them except this one go
away on logout. This one should too.
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