Everyone,

I know this issue exists, I've been trying to debug it for a long
time. The most useful thing for me now would be _detailed_
_instructions_ to _reproduce_ it. Please don't comment saying that you
are also affected unless you have found a way to reliably or at least
semi-reliably trigger it.

On Thu, May 19, 2011 at 6:13 PM, mrtwister <email address hidden> wrote:
> Daniel, I agree. See Screenshot. The dead area pretty much corresponds
> to the switcher window for two applications. I was able to reproduce
> this twice, but not exactly sure how. In all cases I first noticed the
> dead area while (manually) selecting every odd file (holding down Ctrl)
> with nautilus in a folder with > 100 items.
>
> ** Attachment added: "Bildschirmfoto-1.png"
>   https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/709461/+attachment/2134867/+files/Bildschirmfoto-1.png
>
> --
> You received this bug notification because you are a bug assignee.
> https://bugs.launchpad.net/bugs/709461
>
> Title:
>  Application windows can sometimes fail to display and will mask
>  regions of the screen
>
> Status in Unity:
>  Triaged
> Status in “compiz” package in Ubuntu:
>  Triaged
> Status in “unity” package in Ubuntu:
>  Triaged
> Status in “compiz” source package in Natty:
>  Triaged
> Status in “unity” source package in Natty:
>  Triaged
>
> Bug description:
>  Binary package hint: unity
>
>  On 2 separate machines  w/ updated as of 1/28 -
>
>  On rare occasions a window will open in the top left corner with top deco buried.  The most likely for this to happen is a utility window like  update manager.
>  After pulling back down into the desktop (Alt+click) it may or may not show some graphical distortion (window split in 2 parts), if so it returns to normal if opening any other window.
>
>  What does appear to happen is an invisible window is created in the
>  area where it was pulled down to, this only happens on the current
>  workspace, any others are unaffected
>
>  Attached xwininfo - first shows on affected workspace, 2nd when
>  switching to another and clicking in same spot
>
>  Note that this does not always happen, I'm thinking the 'buried'
>  window may need to show some distorttion, not sure yet
>
>  ProblemType: Bug
>  DistroRelease: Ubuntu 11.04
>  Package: unity 3.2.16-0ubuntu1
>  ProcVersionSignature: Ubuntu 2.6.38-1.27-generic 2.6.38-rc2
>  Uname: Linux 2.6.38-1-generic i686
>  NonfreeKernelModules: nvidia
>  .proc.driver.nvidia.version:
>   NVRM version: NVIDIA UNIX x86 Kernel Module  173.14.28  Wed Sep 29 09:47:25 PDT 2010
>   GCC version:  gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-2ubuntu1)
>  Architecture: i386
>  Date: Fri Jan 28 14:36:27 2011
>  DistUpgraded: Fresh install
>  DistroCodename: natty
>  DistroVariant: ubuntu
>  DkmsStatus:
>   nvidia-current, 260.19.29, 2.6.37-12-generic, i686: installed
>   nvidia-current, 260.19.29, 2.6.38-1-generic, i686: installed
>   nvidia-173, 173.14.28, 2.6.37-12-generic, i686: installed
>   nvidia-173, 173.14.28, 2.6.38-1-generic, i686: installed
>  GraphicsCard:   Subsystem: Dell Device [1028:0209]
>  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110120)
>  InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110120)
>  MachineType: Dell Inc. XPS M1330
>  ProcEnviron:
>   LANGUAGE=en_US:en
>   PATH=(custom, user)
>   LANG=en_US.UTF-8
>   LC_MESSAGES=en_US.utf8
>   SHELL=/bin/bash
>  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=28d68c1b-9e85-45a3-9ec2-ad4f992ba387 ro
>  ProcVersionSignature_: Ubuntu 2.6.38-1.27-generic 2.6.38-rc2
>  SourcePackage: unity
>  dmi.bios.date: 12/26/2008
>  dmi.bios.vendor: Dell Inc.
>  dmi.bios.version: A15
>  dmi.board.vendor: Dell Inc.
>  dmi.chassis.type: 8
>  dmi.chassis.vendor: Dell Inc.
>  dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
>  dmi.product.name: XPS M1330
>  dmi.sys.vendor: Dell Inc.
>  version.libdrm2: libdrm2 2.4.23-1ubuntu3
>  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
>  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
>  version.xserver-xorg: xserver-xorg 1:7.5+6ubuntu8
>  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu1
>  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu2
>  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu1
>



-- 
Sam Spilsbury