Computer suspends when not logged in

Since the latest update of Gnome / GDM my computer seems to be put into suspend mode when I am idle on the logon screen for about 20 minutes.

This was not the case before the update. Current Version of gnome-session & gdm 3.28.0. I'm running Arch Linux.

The system log, centered around Mar 29 17:21:17 oliver-desktop kernel: PM: suspend exit +/- 200 lines. If you need more, let me know.

I have looked through a lot of the gsettings, none of the ones I tried were able to make gdm behave otherise. Also, the configuration documentation does not hint to any option related to auto-suspend.

Solution 1:

You'll find https://wiki.archlinux.org/index.php/GDM#GDM_auto-suspend_.28GNOME_3.28.29 useful.

GDM auto-suspend (GNOME 3.28)

GDM uses a separate dconf database to control power management. You can make GDM behave the same way as user sessions by copying the user settings to GDM's dconf database.

$ IFS=$'\n'; for x in $(sudo -u YOUR_USER gsettings list-recursively org.gnome.settings-daemon.plugins.power); do eval "sudo -u gdm dbus-launch gsettings set $x"; done; unset IFS

Solution 2:

I ran into the same issue on Debian testing (Debian 10 "Buster").

I found that this is independent of the power settings made by an unprivileged user within a Gnome login session. It also suspends during an active SSH or VNC session.

The offending settings can be printed to the console. As superuser:

su -s /bin/bash Debian-gdm
unset XDG_RUNTIME_DIR

dbus-launch gsettings get org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type
dbus-launch gsettings get org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout

This prints 'suspend' and '1200', respectively.

To turn off suspension, set:

dbus-launch gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type nothing

I also filed a Debian bug report here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896083