Public bug reported: When the screen resolution is changed (e.g., when I launch an old game using Wine), Unity does not display the desktop and windows correctly anymore, and messes up the game, too. It's hard to say exactly what is happening, but either the desktop or the mouse coordinates are not scaled correctly - so mouse events go to the wrong locations, making the whole desktop unusable. As far as I understand, there should be no scaling to begin with, since Xorg does all the work. Everything works correctly when I run Fluxbox.
Here's my normal screen configuration: $ xrandr Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 293mm x 164mm panning 1366x768+0+0 1366x768 60.0*+ 40.0 1360x768 59.8 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis) A command to reproduce the problem: $ xrandr --output LVDS1 --mode 800x600 --fb 1366x768 --panning 800x600 ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: unity 6.12.0-0ubuntu0.2 ProcVersionSignature: Ubuntu 3.5.0-21.32+kamal11~DellXPS-generic 3.5.7.1 Uname: Linux 3.5.0-21-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.6.1-0ubuntu9 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz Date: Thu Jan 3 22:41:29 2013 DistUpgraded: 2012-09-29 19:02:57,236 DEBUG enabling apt cron job DistroCodename: quantal DistroVariant: ubuntu GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:052e] InstallationDate: Installed on 2012-05-30 (219 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: Dell Inc. Dell System XPS L321X MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic root=UUID=d7e21c25-1d7a-42ce-bee0-503b732523ba ro quiet splash vt.handoff=7 SourcePackage: unity UpgradeStatus: Upgraded to quantal on 2012-09-30 (96 days ago) dmi.bios.date: 04/09/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A04 dmi.board.name: 085X6F 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:bd04/09/2012:svnDellInc.:pnDellSystemXPSL321X:pvr:rvnDellInc.:rn085X6F:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS L321X dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.8.6-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.39-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3 ** Affects: unity (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 package-from-proposed quantal running-unity ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1095958 Title: Unity messes up the screen, mouse pointer, etc. when the resolution is changed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1095958/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs