[Bug 1307657] [NEW] [SRU] UBUNTU_MENUPROXY should not be set in Xfce

[Launchpad Bug Tracker]

You have been subscribed to a public bug by William Hua (attente):

[Impact]

The upstart script for unity-gtk-module causes it to run under all
desktop environments indiscriminately when it should only be running
under Unity. It does this by adding unity-gtk-module to the environment
variable GTK_MODULES.

In Xfce, this causes the panel to crash when trying to add Unity
indicators, as well as other related side effects (see: LP: #1314782,
LP: #1347272).

The fix to ensure we only modify GTK_MODULES under Unity is already in
14.10.

[Test Case]

Log into a Xubuntu session on a machine that has both ubuntu-desktop and
xubuntu-desktop. Add the Indicator Plugin to the panel and open a
terminal window. A crash dialog should appear notifying the user that
the Indicator Plugin unexpectedly left the panel.

[Regression Potential]

The potential for regression is low since the only change is to preserve
the original value of the GTK_MODULES environment variable, as well as
to never set UBUNTU_MENUPROXY. The fix restores the desktop environment
to its intended state of not running unity-gtk-module. Also, I've tested
the change under Unity, and application menus still work properly under
the global menu without regression.

[Other Info]

N/A

=== original bug report ===

To reproduce: either start with a fresh Ubuntu install and then install
xubuntu-desktop, or start with Xubuntu and then install ubuntu-desktop -
ie have both Xfce and Unity installed on the same machine.

Xfce now has support for gtk3 indicators launched by upstart, but
indicator-appmenu is totally broken - it will constantly crash the panel
and applications. Xfce has a mechanism to hide indicators, and then the
frontend UI will not be loaded in the panel, but it seems that
UBUNTU_MENUPROXY is still being set in Xfce, which causes menus to
disappear from applications, even though nothing is available to receive
them.

I discussed this with tedg and he suggested that the problem may be to
do with the upstart service which sets UBUNTU_MENUPROXY, ie
/usr/share/upstart/sessions/unity-gtk-module.conf

We may in future get the appmenus working in Xfce, and then we would
need some way to turn the menuproxy on and off depending on the user
configuration. But for now, since they are broken anyway, it would be
easiest to simply blacklist xubuntu desktop completely.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-gtk-module-common 0.0.0+14.04.20140403-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
Uname: Linux 3.13.0-8-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu2
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Apr 14 19:40:36 2014
InstallationDate: Installed on 2014-02-11 (61 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140210)
PackageArchitecture: all
SourcePackage: unity-gtk-module
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: unity-gtk-module (Ubuntu)
     Importance: Undecided
     Assignee: William Hua (attente)
         Status: Fix Released

** Affects: xfce4-indicator-plugin (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: unity-gtk-module (Ubuntu Trusty)
     Importance: Undecided
     Assignee: William Hua (attente)
         Status: Confirmed

** Affects: xfce4-indicator-plugin (Ubuntu Trusty)
     Importance: Undecided
         Status: Confirmed

** Affects: unity-gtk-module (Ubuntu Utopic)
     Importance: Undecided
     Assignee: William Hua (attente)
         Status: Fix Released

** Affects: xfce4-indicator-plugin (Ubuntu Utopic)
     Importance: Undecided
         Status: Invalid


** Tags: amd64 apport-bug trusty
-- 
[SRU] UBUNTU_MENUPROXY should not be set in Xfce
https://bugs.launchpad.net/bugs/1307657
You received this bug notification because you are a member of Ubuntu Sponsors Team, which is subscribed to the bug report.