unity switcher sometimes shows duplicate icons for most running applications

[James Hunt]

See attached. It's interesting that the following are *not* duplicated:

- Skype
- "show desktop"
- Firefox

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic-pae 3.2.9
Uname: Linux 3.2.0-18-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.94.1-0ubuntu1
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Thu Mar 8 12:13:54 2012
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=fr_CA.UTF8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-01-12 (56 days ago)

[Launchpad Janitor (janitor)]

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

[James Hunt (jamesodhunt)]

I think this problem _may_ be a result of unity incorrectly handling existing windows when compiz crashes - all the windows in my screenshot above relate to applications I start "immediately" on login (via ~/.config/autostart/*.desktop). I think compiz may have crashed earlier and on restart duplicated the list of already running application windows. Skype not being doubled up might be explained by the fact that it is normally "docked". Firefox, I'm not sure about, but I do have a lot of tabs open so that might be down to a timing issue.

[Omer Akram (om26er)]

@James, does the very same happen with the icons in the Unity launcher as well? i.e. do they double as well? I suspect you might be facing some side of bug 928912

That bug have a test case to reproduce, if the test case creates the exact same condition for you we might conclude this as duplicate. Thanks

[James Hunt (jamesodhunt)]

@Omer: You are right - "killall bamfdaemon" results in a delay whilst bamfdaemon is respawned. After this, the switcher contains 2 icons *and* 2 icons in the launcher. Marking as a dup.