After upgrade to Ubuntu version 20.4 the issue with the idle status reporting by lightdm-greeter remains. This continues to have idle setting of logind.conf ignored:
https://www.freedesktop.org/software/systemd/man/logind.conf.html > Note that this requires that user sessions correctly report the idle status > to the system. The system will execute the action after *all sessions* report > that they are idle, no idle inhibitor lock is active, and subsequently, the > time configured with IdleActionSec= (see below) has expired. At the other hand, installing lightdm and unity-greeter causes suspend to happen every 20 minutes while one screen shows greeter, regardless of all other screens. Reported also at https://askubuntu.com/questions/1337649/how-to-disable-suspend-in-20 -minutes-from-the-lightdm-login-screen and as https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1928305 There is a workaround available there (set both org.gnome.settings- daemon.plugins.power and com.canonical.unity.settings- daemon.plugins.power sleep-inactive-ac-type to 'nothing'), preventing the unexpected suspend by greeter. Issue of this bug remains since the greeter still does not report idle to logind. The script to check idle status of all session and force suspend overriding login screen needs update, systemd-inhibit --list does not have parseable output, like it was the case in systemd version 229. Needed to be replaced by command gdbus call --system --dest org.freedesktop.login1 --object-path /org/freedesktop/login1 --method org.freedesktop.login1.Manager.ListInhibitors There are several other reports of this problem, for example also at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896083 or https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/22 but I am not sure about be the best upstream place to track this. It looks like gdm/lightdm greeter is not designed to work under logind but attempts to control the system sleep status on its own. ** Bug watch added: Debian Bug tracker #896083 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896083 ** Bug watch added: gitlab.gnome.org/GNOME/gnome-control-center/-/issues #22 https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/22 ** Attachment added: "Workaround, checking idle/inhibit status of all sessions, ignoring greeter" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1730606/+attachment/5501243/+files/idlecheck.pl -- 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
