Darn! It happened to me again, this time with the logs, but I missed the crucial point where it said "BUG: Overflow ... ? ... Kernel ..." Here is what I have written down:
WARNING BUG: (Did not completely see this message, something about kernel overflow) At /build/buildd/linux-3.2.0/kernel/watchdog.c:241 watchdog_overflow_callback+0x9a/0xc0 () Watchdog detected hard lockup on cpu 0 Do you know where these logs are saved? At the moment it looks like some sort of kernel bug and some lockup on the CPU. I had looked up the /build directory but it was nowhere to be found. This seems to be the same problem as me, though slightly different http://lkml.indiana.edu/hypermail/linux/kernel/1107.1/02053.html, also this https://bugzilla.redhat.com/show_bug.cgi?id=822287. This, I beleive is the code in the kernel which triggers this log output which may help you to understand the cause of the error http://lxr.free-electrons.com/source/kernel/watchdog.c#L214. ** Bug watch added: Red Hat Bugzilla #822287 https://bugzilla.redhat.com/show_bug.cgi?id=822287 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1043755 Title: Plymouth screen hangs on shutdown Status in “lightdm” package in Ubuntu: New Bug description: Ocasionally, when I shut down, I am sent to the plymouth splash screen as usual, however the ubuntu logo and the progress dots are static - they are not moving. This has been happening more recently over the past week. The hard drive LED on my case is not lit up at all when this happens. Attatched: Xorg.log Syslog.log Motherboard ASUS M5A78L -M LX V2 GPU Sapphire Radeon HD 6570 WITH UBUNTU-PACKAGED FGLRX INSTALLED DRIVER CPU AMD Athlon II X2 255 3.2GHz HD WD Caviar 500GB Monitor Benq G2255 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: plymouth 0.8.2-2ubuntu30 ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24 Uname: Linux 3.2.0-29-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.0.1-0ubuntu12 Architecture: amd64 Date: Thu Aug 30 11:42:47 2012 DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: System manufacturer System Product Name ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic root=UUID=e97b3482-c14c-4320-b621-19dbc962822b ro ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic root=UUID=e97b3482-c14c-4320-b621-19dbc962822b ro SourcePackage: plymouth TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/26/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0902 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M5A78L-M LX V2 dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0902:bd03/26/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM5A78L-MLXV2:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1043755/+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
