I've been having the same problem. I thought it was my KVM at first, but after some experimenting I found it's unrelated. I am able to "recover" from the error, however.
Most of my log files look very similar to Bernhard's, so I won't post them unless requested. I will try to describe the situation a bit more thoroughly, though, and my solution, because I feel it might shed some light on the root cause. My set up is a little different than most. I have a DVI/USB KVM that is plugged into my "main" display, which switches between my Ubuntu 13.04 Shuttle XH61-V box and a Windows 7 gaming desktop. I also use an HDMI- DVI cable to plug in a second monitor to the linux box. The linux box is on 24/7. The problem occurs typically after recovering from the monitors having been turned off automatically after the set time, either over night or after I've been on the Windows side a bit. When bringing it back up, the main display is "on the fritz." It flashes as if it's out of refresh rate range, or the colors are clearly displayed wrong and have severe video artifacting. I can ctrl+alt+F1 to go to terminal, and if it was out of range it's typically back to video artifacting but sometimes stays out of refresh rate. Going back with ctrl+alt+f7 brings me back to out of refresh rate. On a whim I unplugged the DVI from the KVM and plugged it back in. Going between C+A+F1 and C+A+F7, F1 is a terminal as I'd expect but F7 is all black. This forces everything onto my second monitor, though. Going into System Settings and selecting Displays forces a refresh of the monitors and my main monitor is back. I don't even have to "accept" it, it's just back up. Unplugging the monitor cable from the computer or the KVM has the same results, so I'm quite sure it's just a matter of forcing Xorg to drop the monitor, plug it back in and force it to rescan for it and the problem's "solved." Clearly, it's not an elegant solution. It only occurred to me typing this up, but I'm gonna try disabling the "turn screen off when inactive" option in Brightness & Lock settings to see if it's directly related to that or not. I never really noticed it was after waking the monitors back up before, so I imagine that's the real problem. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1173557 Title: Problems with dual monitor on Intel HD graphics Status in “xserver-xorg-video-intel” package in Ubuntu: Confirmed Bug description: After my upgrade to ubuntu 13.04 stable I've got Problems with my dual monitor configuration on an Intel HD 4000 Graphics System. The second monitor blanks and gives an input frequenzy mismatch error (this one is connected using the HDMI Output). Futher the startup Panel of unity gets purple and the whole Session is not responsive. I'm only able to switch into a console using the STRG+ALT+Fx command and do a reboot from there. If I switch back to X the whole System stops responding. I found a working Configuration using the Gnome3 in Fallback Mode w/o effects, opening the Screen Resolution Applet, switching the second monitor off and on again in this dialog then its working inside that session, but no way to use Unity or Gnome with the full feature set. It seems that the expired Bug #1155568 tells exactly the same story. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: xserver-xorg-video-intel 2:2.21.6-0ubuntu4 ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8 Uname: Linux 3.8.0-19-generic x86_64 ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 Date: Sat Apr 27 13:05:50 2013 InstallationDate: Installed on 2012-04-11 (380 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120327.1) MarkForUpload: True SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to raring on 2013-04-25 (1 days ago) --- ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 DistroRelease: Ubuntu 13.04 InstallationDate: Installed on 2012-04-11 (380 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120327.1) MarkForUpload: True Package: xserver-xorg-video-intel 2:2.21.6-0ubuntu4 PackageArchitecture: amd64 Tags: raring Uname: Linux 3.9.0-994-generic x86_64 UpgradeStatus: Upgraded to raring on 2013-04-25 (1 days ago) UserGroups: adm cdrom dialout dip libvirtd lpadmin plugdev sambashare sudo vboxusers video wireshark --- ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' DistUpgraded: 2013-04-25 16:31:13,703 DEBUG enabling apt cron job DistroCodename: raring DistroRelease: Ubuntu 13.04 DistroVariant: ubuntu DkmsStatus: virtualbox, 4.2.10, 3.6.2-030602-generic, x86_64: installed virtualbox, 4.2.10, 3.8.0-19-generic, x86_64: installed virtualbox, 4.2.10, 3.9.0-994-generic, x86_64: installed ExtraDebuggingInterest: No GraphicsCard: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0162] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000] InstallationDate: Installed on 2012-04-11 (384 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120327.1) MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. MarkForUpload: True Package: xserver-xorg-video-intel 2:2.21.6-0ubuntu4 PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.9.0-994-generic root=/dev/mapper/linux-root ro drm.debug=6 Tags: raring ubuntu Uname: Linux 3.9.0-994-generic x86_64 UpgradeStatus: Upgraded to raring on 2013-04-25 (5 days ago) UserGroups: adm cdrom dialout dip libvirtd lpadmin plugdev sambashare sudo vboxusers video wireshark dmi.bios.date: 08/22/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F15 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z77X-D3H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF15:bd08/22/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1 version.ia32-libs: ia32-libs 20090808ubuntu36 version.libdrm2: libdrm2 2.4.43-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1 xserver.bootTime: Tue Apr 30 22:38:10 2013 xserver.configfile: default xserver.errors: Failed to load module "nvidia" (module does not exist, 0) xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.13.3-0ubuntu6 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1173557/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
