I recently tried more than one monitor after changing DPM to battery and when the system went bonkers this time: it rebooted after switching from Xorg to terminal.
I readied a camera and snapped the attached photo of the last text. Here's a transcription for search result's sake: <QUOTE> mce: [hardware error]: CPU 2: Machine Check Exception: 4 Bank: fe00000000800400 mce: [hardware error]: TSC 640cdf90bd036 MISC 3ffff mce: [hardware error]: PROCESSOR 0:206a7 TIME 1402881103 SOCKET 0 APIC 4 microcode d mce: [hardware error]: Run the above through "mcelog --ascii" mce: [hardware error]: Some CPUs didn't answer in synchronization mce: [hardware error]: Machine Check: invalid Kernel panic - not syncing: fatal machine check on current CPU Shutting down cpus with NMI drm_kms_helper: panic occured, switching back to text console rebooting in 30 seconds... </QUOTE> I installed the package for mcelog but it probably doesn't matter anymore since the system rebooted. http://www.mcelog.org/faq.html#6 Any ideas? ** Attachment added: "Farewell text from the console prior to reboot." https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1310064/+attachment/4132114/+files/2014-06-15%2020.15.25.jpg -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1310064 Title: System crashes or auto-reboots only when more than 1 monitor is enabled. Status in “xserver-xorg-video-ati” package in Ubuntu: New Bug description: UPDATE: Read submitter's latest post first. After the upgrade, the computer crashed at the login screen where it froze. I could not switch to a VT, login via SSH, or safer reboot via the magic keys: RESIUB. Anyway - after a hard reboot, I noticed the graphics setup had changed. It was obvious because of the way the 22" handles resolutions or signals it doesn't like. It's cloning the only resolution it has made available: 1280x1024. At some point after upgrade to 14.04 and before my second attempt to run Xorg, the original xorg.conf file was renamed (and not replaced) with the date added on the end. I replaced it with the original xorg and eventually tired different things to fix it by commenting certain lines. The second run of Xorg: The graphic output looked the same with cloned 1280x1024. I noticed that even though I restored my xorg.conf file, it proceeded to unload radeon driver and then load and use FBDEV with LLVM pipe. Yay? Nope, I use folding@home so the CPU cores are too busy for OpenGL. Having and not having xorg.conf present seems to not have an effect on the resutlts. :( The output of xrandr is: <QUOTE> xrandr: Failed to get size of gamma for output default Screen 0: minimum 1280 x 1024, current 1280 x 1024, maximum 1280 x 1024 default connected 1280x1024+0+0 0mm x 0mm 1280x1024 77.0* </QUOTE> I see no obvious reason from the log files why radeon was unloaded and not used for this card which is on the supported list still. Any ideas? Thanks much. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xserver-xorg-video-radeon 1:7.3.0-1ubuntu3 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Apr 19 13:53:09 2014 SourcePackage: xserver-xorg-video-ati UpgradeStatus: Upgraded to trusty on 2014-04-19 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1310064/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
