Amk's workaround is ideal. I modified slightly to include support for sddm and gdm , which makes it pretty universal.
I wish I was more competent at perl. I'd love to be able to get it to automatically set each login manager session to "Idle" on a 15 minute cycle, and remove the systemctl suspend action; instead allowing logind to handle the situation when all session are "Idle". I already use notification in KDE to set IdleHint when the screen locks (using dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1/session/$XDG_SESSION_ID "org.freedesktop.login1.Session.SetIdleHint" boolean:true ) It feels like with a couple of simple work arounds IdleHint can be used effectively, which is a nice-to-have on single-seat workstations, and critical for suspending on multi-seat workstations. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1730606 Title: systemd idleaction=suspend not working in multiseat while a screen is showing login prompt Status in lightdm package in Ubuntu: Confirmed Bug description: Ubuntu 16.04.3 LTS, multiseat setup. systemd: Installed: 229-4ubuntu21 lightdm: Installed: 1.18.3-0ubuntu1.1 logind.conf:IdleAction=suspend logind.conf:IdleActionSec=300 Using multiseat, it is not possible to have gnome settings controlling idle suspend, as it would ignore the other seat. IdleAction=suspend in /etc/systemd/logind.conf works well, provided both seats are logged in or locked. After boot, or after logout the seat remains showing login screen and the system never suspends. loginctl show-session provides IdleHint=yes that allows to determine whether the user is active. For some reason Active property is yes all the time. But for the login screen the show-session does not provide the hint about seat idling: $ loginctl show-session c9 Id=c9 User=108 Name=lightdm Timestamp=Sun 2017-11-05 22:35:37 CET TimestampMonotonic=13418600852 VTNr=7 Seat=seat0 Display=:1 Remote=no Service=lightdm-greeter Scope=session-c9.scope Leader=12431 Audit=0 Type=x11 Class=greeter Active=yes State=active IdleHint=no IdleSinceHint=0 IdleSinceHintMonotonic=0 Working on a script to check for IdleHint=Yes and Service=lightdm- greeter and suspend based on this. I am marking this as a bug in lightdm because I think it is not correctly reporting the idle status to the system. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1730606/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
