Desktop unable to Suspend when Inactive

Bug #1757375 reported by TJ on 2018-03-21
This bug affects 3 people
Affects Status Importance Assigned to Milestone
policykit-desktop-privileges (Ubuntu)

Bug Description

On Ubuntu 16.04 and later versions (Xfce/Xubuntu) the power-manager is unable to suspend the system when the user is inactive. A PK user-agent dialog is presented for the user to authenticate first - and as this action occurs specifically when the user is idle and away the PC can end up having an unplanned loss of power when the battery is exhausted.

/var/log/auth.log shows:

polkitd(authority=local): Operator of unix-session:c2 FAILED to authenticate to gain authorization for action org.freedesktop.login1.suspend for system-bus-name::1.47 [xfce4-power-manager --restart --sm-client-id 2992705d4-6fa2-4fba-966c-f7631ecd0b46] (owned by unix-user:tj)

The problem seems to be "com.ubuntu.desktop.pkla" is missing an entry to allow Suspend. Currently it only has an entry for hibernate.

Adding the following stanza solves the issue:

[Enable suspend by default in logind]

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in policykit-desktop-privileges (Ubuntu):
status: New → Confirmed
Douglas Silva (o-alquimista) wrote :

Your workaround worked for me too. I'm running Xubuntu 18.04. Now I can suspend the machine.

Douglas Silva (o-alquimista) wrote :

No change in Disco. Still missing the entry at "com.ubuntu.desktop.pkla".

Douglas Silva (o-alquimista) wrote :

The solution is right here, so simple to apply. Why is this ignored? No one else suspends their machines? Merge the necessary polkit rule, please.

Sebastien Bacher (seb128) wrote :

It's not ignored but the bug is about a 3 years old version of Ubuntu and it got only one report in that time with 2 affect users, that makes it a pretty low priority issue.

Also suspend on idle does work under Unity so maybe the issue is not the with the permission but with the action xfce is using?

Sebastien Bacher (seb128) wrote :

it's also weird because /usr/share/polkit-1/actions/org.freedesktop.login1.policy has

        <action id="org.freedesktop.login1.suspend">

Which means the active session should be allowed

Is you user an admin one?

Douglas Silva (o-alquimista) wrote :

Thanks for the response. Sorry for the delay, I didn't get a notification about this.

If by admin you mean one that has sudo privileges or a member of group `adm`, then yes. It's the default user created by the installer.

I could reproduce this on Arch Linux and other distros IIRC. The workaround works on them too.

Douglas Silva (o-alquimista) wrote :

I can also reproduce this on both of my computers running Xubuntu 19.04, a desktop and a laptop.

Just to be extra clear on what the issue is:

If the computer is left idle for 10 minutes, the screen locks. When 15 minutes have passed, it should suspend, but it never does. I unlock the screen to investigate why, and find that there is a prompt window asking my password in order to allow the system to suspend.

What usually happens as a consequence:

I fall asleep with the laptop still running, and on the next day the thing is powered off with only 1% of battery power. It stayed ON all night.

description: updated

Still a major laptop usability problem in eoan.

Douglas Silva (o-alquimista) wrote :

I think I can't reproduce this anymore on Xubuntu 20.04. I left the laptop idle and after 30 minutes it was suspended as expected, without making any fixes (clean install).

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