I can confirm that this is caused by the Alt-Tab switcher. Also, obly the BORDERS AREA is unclickable, not the window preview area.
Please look at the screenshot which demonstrates this. (everything in the middle is clickable). ** Attachment added: "Screenshot proving that the Alt-Tab switcher is the cause" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/709461/+attachment/2138432/+files/unclickable.png ** Description changed: 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 + ### IMPORTANT ### + This can cause the central area of the screen (where the Alt-Tab switcher is drawn) to be unclickable. This also happens on Classic desktop. + 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) + 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 + 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 + 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 -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/709461 Title: Application windows can sometimes fail to display and will mask regions of the screen _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp
