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[Bug 852300] [NEW] compiz loses track of underlying windows when you minimize full-screen thunderbird


Public bug reported:

If you run Thunderbird in maximized mode and then minimize it, compiz
seems to lose track of windows that were underneath. It exhibits drawing
glitches and you can't select the window with the mouse, even with the
scroll key, unless you use the unity launcher. Sometimes you can't
redisplay Thunderbird with the unity launcher unless you first select
another window, eg firefox.

This happens both in my main laptop and in VMs and is quite

For instance, in the attached screenshot, I had Synaptic (non-maximized)
running over Firefox (maximized) and then I displayed Thunderbird in
maximized mode and hit the minimize button. Thunderbird minimized
correctly, but the Synaptic and Firefox windows were not responsive to
the mouse, and you can see a line of graphics corruption running across
from the software centre launcher icon.

If Thunderbird is not in maximized mode, this doesn't happen.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: compiz 1:
Uname: Linux 3.1.0-rc6-git-20110915.1708 x86_64
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,text,mousepoll,gnomecompat,imgpng,snap,grid,wall,imgjpeg,move,place,vpswitch,session,compiztoolbox,resize,regex,animation,workarounds,unitymtgrabhandles,expo,fade,scale,ezoom,scaleaddon,unityshell]
CompositorRunning: None
Date: Sat Sep 17 09:12:02 2011
DistUpgraded: Log time: 2011-09-02 11:56:50.062543
DistroCodename: oneiric
DistroVariant: ubuntu
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:050e]
 nVidia Corporation GF106 [GeForce GT 555M] [10de:0df4] (rev ff) (prog-if ff)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
MachineType: Dell Inc. Dell System XPS L502X
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.1.0-rc6-git-20110915.1708 root=UUID=67083065-b92e-4596-a218-817c1dfc8ae7 ro quiet splash i915.i915_enable_rc6=1 pcie_aspm=force i915.lvds_downclock=1 i915.i915_enable_fbc=1 vt.handoff=7
SourcePackage: compiz
UpgradeStatus: Upgraded to oneiric on 2011-09-15 (1 days ago)
dmi.bios.date: 03/25/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 0NJT03
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA04:bd03/25/2011:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L502X
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:
version.ia32-libs: ia32-libs 20090808ubuntu22
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug oneiric possible-manual-nvidia-install ubuntu

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