Confirmed that this is still an issue in focal.
It is only an issue if I log onto a XFCE session and then log out, these two
processes stay around:
/usr/libexec/geoclue-2.0/demos/agent
/usr/bin/python3 /usr/share/system-config-printer/applet.py
When I remove the geoclue-2.0 from the system:
sudo apt -y purge geoclue-2.0 --autoremove
The issue no longer shows up. I don't see neither processes hanging around any
more.
I think those two are related to the two autostart programs:
/etc/xdg/autostart/geoclue-demo-agent.desktop
/etc/xdg/autostart/print-applet.desktop
I think in terms of workaround, two options here:
1. remove geoclue - but the catch here is that if you autoremove, gnome
dependencies may get removed, which could have unexpected outcome
2. remove autostart files
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https://bugs.launchpad.net/bugs/1871726
Title:
"systemd --user" and child processes fail to exit when user logs out
Status in systemd package in Ubuntu:
Confirmed
Bug description:
This concerns systemd 245.2-1ubuntu2 in Ubuntu focal.
I am using the Xfce desktop. After the user logs out from a desktop
session, numerous desktop-related processes are left over. Here is a
listing, taken over twenty minutes after logout:
skunk 853 0.0 0.2 18912 10300 ? Ss 17:55 0:00
/lib/systemd/systemd --user
skunk 854 0.0 0.0 103304 3496 ? S 17:55 0:00 (sd-pam)
skunk 881 0.0 0.1 8076 5324 ? Ss 17:55 0:00
/usr/bin/dbus-daemon --session --address=systemd: --nofork --nopidfile
--systemd-activation --syslog-only
skunk 970 0.0 0.1 305364 6776 ? Ssl 17:55 0:00
/usr/libexec/at-spi-bus-launcher
skunk 975 0.0 0.1 7352 4452 ? S 17:55 0:00
/usr/bin/dbus-daemon
--config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork
--print-address 3
skunk 979 0.0 0.1 230196 5900 ? Sl 17:55 0:00
/usr/lib/x86_64-linux-gnu/xfce4/xfconf/xfconfd
skunk 992 0.0 0.1 239704 7676 ? Ssl 17:55 0:00
/usr/libexec/gvfsd
skunk 997 0.0 0.1 378332 6444 ? Sl 17:55 0:00
/usr/libexec/gvfsd-fuse /run/user/1000/gvfs -f -o big_writes
skunk 1133 0.0 0.1 156116 5596 ? Sl 17:56 0:00
/usr/libexec/dconf-service
skunk 1139 0.0 0.1 236884 4828 ? Sl 17:56 0:00
/usr/libexec/geoclue-2.0/demos/agent
skunk 1186 0.0 0.8 59324 34792 ? S 17:56 0:00
/usr/bin/python3 /usr/share/system-config-printer/applet.py
skunk 1201 0.0 0.6 391676 25688 ? Ssl 17:56 0:00
/usr/libexec/evolution-source-registry
skunk 1224 0.0 0.8 616644 35492 ? Sl 17:56 0:00
/usr/libexec/goa-daemon
skunk 1235 0.0 0.7 708928 30512 ? Ssl 17:56 0:00
/usr/libexec/evolution-calendar-factory
skunk 1243 0.0 0.2 314744 8980 ? Sl 17:56 0:00
/usr/libexec/goa-identity-service
skunk 1271 0.0 0.7 681460 29344 ? Ssl 17:56 0:00
/usr/libexec/evolution-addressbook-factory
skunk 1302 0.0 0.1 43968 6432 ? Ss 17:56 0:00
/usr/lib/bluetooth/obexd
skunk 1322 0.0 0.2 313872 9076 ? Ssl 17:56 0:00
/usr/libexec/gvfs-udisks2-volume-monitor
skunk 1327 0.0 0.1 235684 6468 ? Ssl 17:56 0:00
/usr/libexec/gvfs-mtp-volume-monitor
skunk 1331 0.0 0.1 237956 6876 ? Ssl 17:56 0:00
/usr/libexec/gvfs-gphoto2-volume-monitor
skunk 1335 0.0 0.1 235864 5760 ? Ssl 17:56 0:00
/usr/libexec/gvfs-goa-volume-monitor
skunk 1339 0.0 0.2 316716 8800 ? Ssl 17:56 0:00
/usr/libexec/gvfs-afc-volume-monitor
skunk 1347 0.0 0.1 313684 7836 ? Sl 17:56 0:00
/usr/libexec/gvfsd-trash --spawner :1.13 /org/gtk/gvfs/exec_spaw/0
skunk 1353 0.0 0.1 162128 6028 ? Ssl 17:56 0:00
/usr/libexec/gvfsd-metadata
When a user logs out of the system, all processes associated with the login
session should be terminated (barring the use of nohup(1) or the like).
If I sent a SIGINT to the "systemd --user" process above (PID 853),
then all the processes promptly go away. This needs to occur on
logout.
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