x220 seems to be also affected by this. I walked Chris Kenyon on how to do the work around and seems to have improve the problem a lot
** Description changed: Binary package hint: xorg Steps to reproduce: 1- Open the Monitors control panel. 2- Choose a different resolution and orientation (we use 640x480 upside down). 3- Press Apply. 4- Select "Restore original configuration" to return to how things were originally. Expected result: - Resolution restores, screen rebuilds and is visually identical to how it was before the resolution changed. Actual result: - Display is corrupted in various ways. On some systems only the background or parts of it are visible. On others, there's some misplacement of elements. Some others show garbling on all or parts of the screen. On all systems, moving the pointer, dragging windows or generally forcing the system to redraw seems to eventually restore the display to a usable state. We also observed the same problem when plugging in an external display: the corruption happens when connecting the external monitor, and can be restored by dragging things around. When unplugging the external display, the integrated screen becomes garbled as described. The systems were originally installed with Natty Beta1 (March 30, 2011), we did a full update/dist-upgrade on April 7, 2011 and confirmed that the behavior is still present. The system I'm reporting this from is a Dell Inspiron 1545, but about half the systems we tested B1 on exhibited this problem (18 systems out of 32). I'll update shortly with a list of affected systems. Install the update in -proposed: - check the issue is fixed on intel/ATI - Affected systems include: Sony VGN-Z540 Dell Inspiron 1545 Dell Vostro 3300 Dell Vostro 3500 Dell Vostro 3700 (2 affected systems) Dell Latitude 2110 Dell Latitude 13 Dell Vostro 3400 Dell Vostro V13 (2 affected systems) Toshiba Tecra R700 HP ProBook 6550b Toshiba Tecra R850 (Intel) Toshiba Tecra R850 (ATI) Acer Aspire One Dell Mini 10 Lenovo Thinkpad T420s + Lenovo Thinkpad x220s ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: xorg 1:7.6+4ubuntu3 ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic i686 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell] CompositorRunning: compiz DRM.card0.LVDS.1: status: connected enabled: enabled dpms: On modes: 1366x768 1280x720 1152x768 1024x768 800x600 848x480 720x480 640x480 edid-base64: AP///////wAOFL8UAAAAACUTAQOAIhN4Ck5NnldUkSYPUFQAAAABAQEBAQEBAQEBAQEBAQEBeB1WwlAAJjA7J1oAWMEQAAAaeB1WwlAAJjA7J1oAWMEQAAAaAAAA/gBHNTI2SoAxNTZXQTEgAAAAAAAMEhcePWeg/wEBCiAgAIk= DRM.card0.VGA.1: status: disconnected enabled: disabled dpms: Off modes: edid-base64: Date: Thu Apr 7 15:13:05 2011 DistUpgraded: Fresh install DistroCodename: natty DistroVariant: ubuntu GraphicsCard: ATI Technologies Inc M92 LP [Mobility Radeon HD 4300 Series] [1002:9552] (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:02aa] InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330) MachineType: Dell Inc. Inspiron 1545 ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=8d9f6a25-f693-4f12-8592-7ad733739183 ro quiet splash initcall_debug vt.handoff=7 Renderer: Unknown SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/27/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A11 dmi.board.name: 0G437N dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA11:bd08/27/2009:svnDellInc.:pnInspiron1545:pvr:rvnDellInc.:rn0G437N:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1545 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.4+bzr20110406-0ubuntu1 version.libdrm2: libdrm2 2.4.23-1ubuntu6 version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.1-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3 version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu6 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/753971 Title: Display garbled upon restoring original resolution or connecting external displays -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
