Steve Langasek, your https://launchpadlibrarian.net/130544476/BootDmesg.txt indicated you may be using btrfs? Could you please comment more to this (ex. primary OS drive filesystem, swap, external, etc.)?
** Changed in: linux (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1117499 Title: killall -9 firefox fails to work in raring Status in “linux” package in Ubuntu: Incomplete Bug description: Something is wrong in raring. After upgrade, I have twice run into a problem where firefox takes over 100% of a CPU, X takes 100% of another, and the desktop is completely unresponsive (even to the point that the cursor doesn't move and I can't switch VTs). The reason I'm filing this bug against the kernel, however, is that this time I decided to kill -9 firefox... and *it's not working*. So something is seriously wrong with this kernel, because kill -9 shouldn't fail. $ uname -a Linux virgil 3.8.0-4-generic #8-Ubuntu SMP Fri Feb 1 18:02:56 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ More debugging information will be available once I figure out how to successfully recover the desktop session. --- ApportVersion: 2.8-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: vorlon 3703 F.... pulseaudio /dev/snd/pcmC1D0c: vorlon 3703 F...m pulseaudio /dev/snd/controlC0: vorlon 3703 F.... pulseaudio /dev/snd/pcmC0D0p: vorlon 3703 F...m pulseaudio DistroRelease: Ubuntu 13.04 HibernationDevice: RESUME=UUID=f6ab3c43-61b4-4af7-bf03-fa3b147a1de0 InstallationDate: Installed on 2010-09-24 (866 days ago) InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1) MachineType: LENOVO 3249CTO MarkForUpload: True Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-4-generic root=/dev/mapper/hostname-root ro quiet splash --verbose vt.handoff=7 ProcVersionSignature: Ubuntu 3.8.0-4.8-generic 3.8.0-rc6 RelatedPackageVersions: linux-restricted-modules-3.8.0-4-generic N/A linux-backports-modules-3.8.0-4-generic N/A linux-firmware 1.100 Tags: raring running-unity Uname: Linux 3.8.0-4-generic x86_64 UpgradeStatus: Upgraded to raring on 2013-01-25 (12 days ago) UserGroups: adm admin cdrom dialout libvirtd lpadmin mythtv plugdev sambashare src sudo WifiSyslog: dmi.bios.date: 08/23/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 6QET52WW (1.22 ) dmi.board.name: 3249CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6QET52WW(1.22):bd08/23/2010:svnLENOVO:pn3249CTO:pvrThinkPadX201:rvnLENOVO:rn3249CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 3249CTO dmi.product.version: ThinkPad X201 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1117499/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp