** Description changed: - Since I "upgraded" (I did a clean install just without erasing /home) + Since I "upgraded" (I did a clean install, just without erasing /home) from 10.04 to 12.04 (both 64-bit) I can't reliably connect an external display. I tried it with the same screen (Dell S2409W connected via VGA) and experienced these different situations (I guess behaviour might have changed due to some upgrades to X.org-related packages): Previously: 1) Preferences -> Display panel hangs (after rebooting I configured the external screen using xrandr and it worked) 2) After disconnecting the display system sometimes hung, requiring hard reboot (Ctrl+Alt+F1 didn't work) Now: 1) Even if I enable the external screen in Prefenreces -> Display, the virtual screen is not widened, nothing shows on the external display as well 2) Configuring an external screen using xrandr: $ xrandr --auto --output VGA1 --mode 1920x1080 --right-of LVDS1 $ xrandr --auto --output LVDS1 --mode 1440x900 --left-of VGA1 makes the virtual screen wider but still nothing shows on an external display. 3) Sometimes experimenting with both xrandr and Preferences -> Display applet causes the OS to hang I am currently unable to make this external display work, being forced to only use the internal laptop one. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14 Uname: Linux 3.2.0-22-generic x86_64 NonfreeKernelModules: wl .tmp.unity.support.test.0: - + ApportVersion: 2.0.1-0ubuntu1 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Wed Apr 11 17:11:03 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: - bcmwl, 5.100.82.38+bdcom, 3.2.0-21-generic, x86_64: installed - bcmwl, 5.100.82.38+bdcom, 3.2.0-22-generic, x86_64: installed - vboxhost, 4.1.12, 3.2.0-22-generic, x86_64: installed + bcmwl, 5.100.82.38+bdcom, 3.2.0-21-generic, x86_64: installed + bcmwl, 5.100.82.38+bdcom, 3.2.0-22-generic, x86_64: installed + vboxhost, 4.1.12, 3.2.0-22-generic, x86_64: installed ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GpuHangFrequency: Several times a day GpuHangReproducibility: Occurs more often under certain circumstances GpuHangStarted: Since before I upgraded GraphicsCard: - Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) - Subsystem: Dell Device [1028:024f] - Subsystem: Dell Device [1028:024f] + Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) + Subsystem: Dell Device [1028:024f] + Subsystem: Dell Device [1028:024f] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328) MachineType: Dell Inc. Latitude E6500 PccardctlIdent: - Socket 0: - no product info available + Socket 0: + no product info available PccardctlStatus: - Socket 0: - no card + Socket 0: + no card ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-22-generic root=UUID=b59ade0f-05d4-4a67-8069-6d388bd9db41 ro SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/08/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A13 dmi.board.name: 0NY667 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA13:bd05/08/2009:svnDellInc.:pnLatitudeE6500:pvr:rvnDellInc.:rn0NY667:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude E6500 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.4-0ubuntu3 version.ia32-libs: ia32-libs 20090808ubuntu35 version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979004 Title: Xorg freezes or an external display is not handled correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/979004/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
