I have stripped out the timestamps so I could do a diff of the two log files (there is probably a way to skip the first n charactors of each line in diff, but I did not see it in a quick look at the docs).
Attached is a diff of Xorg.0.log files between a good boot, and a boot where the graphics dropped into low graphics mode. The first thing in the log that shows an error is the "setversion 1.4 failed". Things go south from there. What is "setversion"? What is it trying to do? Why would it fail? ** Attachment added: "Diff of good boot log & bad boot log" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1071101/+attachment/3423152/+files/good_vs_bad_diff -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1071101 Title: nearly every other boot I get "Low Graphics Mode" message. Status in “xorg” package in Ubuntu: New Bug description: I'm not entirely sure that this is xorg, I can't figure out which log file to look in to find out. The log files with likely names did not give me usefull info. I've seen similar errors, but never the same hardware or circumstanses. Behavior started immediatly after upgrade to 12.10 I'm running GNOME classic (though I think this bug is occuring before this becomes relevent), using an ATI HD4850 video card with open source drivers. About every other boot, I get a white message box telling me that something went wrong and the system will boot in low graphics mode. I'll try and write down the exact message next time this happens. The first time this happend (the next day after upgrading to 12.10, I was able to select the "use defaults" option to continue. every time after this, the "use defaults" or "use latest backup" goes right back to the same question. The only way forward is to boot into low graphics mode. I usually shut down the computer at the login screen when it is in low graphics mode (from the menu, not the switch), and turn the computer back on. This has booted cleanly with the correct graphics mode every time I have done it (about 4 times). The one time I tried "sudo shutdown -r now", it rebooted and had the same problem again ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xorg 1:7.7+1ubuntu4 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.6.1-0ubuntu3 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,snap,expo,move,resize,scale,regex] CompositorRunning: None Date: Wed Oct 24 19:12:16 2012 DistUpgraded: 2012-10-21 15:14:45,536 DEBUG enabling apt cron job DistroCodename: quantal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Advanced Micro Devices [AMD] nee ATI RV770 [Radeon HD 4850] [1002:9442] (prog-if 00 [VGA controller]) Subsystem: Hightech Information System Ltd. Device [1787:2266] InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: System manufacturer System Product Name ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=c2921384-38b9-419e-b7ef-007bcc801561 ro nosplash debug --verbose SourcePackage: xorg UpgradeStatus: Upgraded to quantal on 2012-10-21 (3 days ago) dmi.bios.date: 09/21/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2209 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P6T DELUXE dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2209:bd09/21/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.8.4-0ubuntu3 version.ia32-libs: ia32-libs 20090808ubuntu36 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 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1071101/+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
