Add logind support (ConsoleKit and UPower suspend/resume are being deprecated)

[Martin Pitt]

As per https://blueprints.launchpad.net/ubuntu/+spec/foundations-1303-consolekit-logind-migration we finally want to move away from the deprecated ConsoleKit and use logind instead.

Unity calls ConsoleKit in ./UnityCore/GnomeSessionManager.cpp as a fallback if gnome-session's D-BUS API does not work, for Logout/Shutdown/Reboot. logind's D-BUS API is almost identical, except that it takes an "interactive" parameter, which for the purposes of Unity should be false:

  http://www.freedesktop.org/wiki/Software/systemd/logind

Unfortunately it seems that using gnome-session's D-BUS API does not work. When I use Unity/indicator-session with just logind but ConsoleKit purged, I merely get logged out and get back to lightdm. Can it be that it first tells the session to shutdown and then try to call CallGnomeSessionMethod("Shutdown", ...)? This would be prone to fail, and explain the observations.

[Martin Pitt (pitti)]

For the record, using gnome-session's D-BUS API does work in general. I can call it with gdbus and d-feet, and it always shuts down/reboots the machine properly. To add some Heisenbug fun, when I run dbus-monitor shutdown/reboot from the indicator works (I tried four times).

So this seems to be a race condition somewhere. When I install CK it works, so that fallback should be kept, and also support logind.

[Martin Pitt (pitti)]

As this is mostly monkey-patching, I'll have a go at this.

[Martin Pitt (pitti)]

While I am at it, UPower's suspend/resume is also being deprecated: http://lists.freedesktop.org/archives/devkit-devel/2013-January/001339.html

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:unity at revision None, scheduled for release in unity, milestone backlog

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity - 6.12.0daily13.03.25.1-0ubuntu1

---------------
unity (6.12.0daily13.03.25.1-0ubuntu1) raring; urgency=low

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  [ Ubuntu daily release ]
  * Automatic snapshot from revision 3252
 -- Ubuntu daily release <email address hidden> Mon, 25 Mar 2013 13:10:17 +0000