Public bug reported:
On 16.04 (XFCE session and others) and possibly later 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]
Identity=unix-user:*
Action=org.freedesktop.login1.suspend;org.freedesktop.login1.inhibit-handle-suspend-key;org.freedesktop.login1;org.freedesktop.login1.suspend-multiple-sessions;org.freedesktop.login1.suspend-ignore-inhibit
ResultActive=yes
ResultInactive=yes
** Affects: policykit-desktop-privileges (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1757375
Title:
Desktop unable to Suspend when Inactive
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