Unity 8 Desktop Preview session won't run Accounts setting

[Stephen M. Webb]

The Accounts setting will not run in the Unity 8 Desktop Preview session. Nothing happens when it is clicked on in the System Settings panel or when launched from a preview when trying to install an application.

From the crash log it appears the appropriate environment variables are not being passed to the invocation of /usr/bin/online-accounts-ui so it thinks it needs to use the XCB QPA instead of the Mir client QPA.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity8-desktop-session-mir 1.0.10+14.04.20140328-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
ApportVersion: 2.14-0ubuntu1
Architecture: amd64
Date: Tue Apr 1 13:46:25 2014
InstallationDate: Installed on 2013-05-09 (327 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: unity8-desktop-session
UpgradeStatus: Upgraded to trusty on 2013-10-31 (152 days ago)

[Stephen M. Webb (bregma)]

On further investigation, it appears that the UI is run as a D-Bus service. Passing environment variables is not going to work well under these circumstances.

[Michał Sawicz (saviq)]

You need to export QT_QPA_PLATFORM=ubuntumirclient somewhere so that the service picks it up. The session should be good enough? ubuntu-touch-session does exactly that?

[Michał Sawicz (saviq)]

If it's dbus-activated, you might need, although the touch session doesn't do that, and works regardless...

gdbus call --session --dest org.freedesktop.DBus --object-path /org/freedesktop/DBus --method org.freedesktop.DBus.UpdateActivationEnvironment "@a{ss} {'QT_QPA_PLATFORM': 'ubuntumirclient'}"

[Stephen M. Webb (bregma)]

Woo hoo, that gdbus call seems to do the trick of bringing the UI up.

Now there are definitely problems with the Accounts UI, but that's a different bug.

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8-desktop-session - 1.0.10+14.04.20140402-0ubuntu1

---------------
unity8-desktop-session (1.0.10+14.04.20140402-0ubuntu1) trusty; urgency=low

  [ Stephen M. Webb ]
  * propagate the QT_QPA_PLATFORM to session services started through D-
    Bus (LP: #1300921)
 -- Ubuntu daily release <email address hidden> Wed, 02 Apr 2014 20:37:44 +0000