The following message appears almost every time I shutdown my computer.
A stop job is running for Session c2 of user ... (1min 30s)
It waits for 1min30s then continues the shutdown process. I follow this systemd shutdown diagnosis guide and get the shutdown-log.txt (I can't paste directly the log here because it's very long). Unfortunately, I don't understand the log by myself. Could anyone help me to find out what makes my system doesn't shutdown properly?
I run Arch Linux with kernel
4.4.5-1-ARCH , my
systemd version is
Addition 1: I observe that every time I logout, and then shutdown my computer from the login screen, it doesn't get the message
A stop job is running... . I tried to logout before shutdown for many times, so i think it doesn't occur by chance. Hope that information could help.
Addition 2: It is always session c2 that causes shutdown hanging. So as @n.st suggest, I looked at Diagnosing Shutdown Problems again and stored
loginctl session-status c2 instead of
dmesg , but then there is nothing on the
shutdown-log.txt . I replaced
loginctl session-status c2 by
systemd-cgls and got the following log.
Control group /: -.slice └─init.scope ├─ 1 /usr/lib/systemd/systemd-shutdown reboot --log-level 6 --log-target ... ├─1069 /usr/lib/systemd/systemd-shutdown reboot --log-level 6 --log-target ... ├─1071 /bin/sh /usr/lib/systemd/system-shutdown/debug.sh reboot └─1074 systemd-cgls
Note: After I updated to kernel
systemd 230-7 , the error no longer happened.
A workaround to this problem is to reduce this timeout in
/etc/systemd/system.conf down from 90s to for example 10s.
and run the following command in terminal after making changes
$ systemctl daemon-reload