apport information ** Tags added: apport-collected
** Description changed: After updating to kernel linux-image-3.5.0-27-generic a week or two ago, my T520 4940-49U won't boot. After 1-2 seconds, the screen goes blank (dark - backlight off) and the laptop stops responding. Alt-F2, etc does not cause any change. Alt-SysRq-B will reboot, but nothing else has any effect. The hard disk light is not on/blinking. Removing the "quiet splash $vt_handoff" options from the grub boot options does NOT help; also adding "nofb" does NOT help; also adding "init=/bin/bash" does NOT help. Booting recovery mode for 3.5.0-27 DOES work. Booting 3.5.0-26 in standard (non-recovery mode) DOES work. I'm unable to capture any output from a failed boot, so not sure how to troubleshoot further. Attached data was captured while running 3.5.0-26 (NOT the problem kernel). ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: linux-image-3.5.0-26-generic 3.5.0-26.42 ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6 Uname: Linux 3.5.0-26-generic x86_64 ApportVersion: 2.6.1-0ubuntu10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dschaapveld 2764 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory: 'iw' CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied Date: Wed Apr 17 08:19:50 2013 InstallationDate: Installed on 2012-06-12 (308 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: LENOVO 424049U MarkForUpload: True ProcFB: 0 nouveaufb 1 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/VG298-root ro quiet splash SourcePackage: linux UpgradeStatus: Upgraded to quantal on 2012-11-02 (166 days ago) WifiSyslog: dmi.bios.date: 12/06/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8AET56WW (1.36 ) dmi.board.asset.tag: Not Available dmi.board.name: 424049U 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:bvr8AET56WW(1.36):bd12/06/2011:svnLENOVO:pn424049U:pvrThinkPadT520:rvnLENOVO:rn424049U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 424049U dmi.product.version: ThinkPad T520 dmi.sys.vendor: LENOVO + --- + ApportVersion: 2.6.1-0ubuntu10 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC1: dschaapveld 2764 F.... pulseaudio + /dev/snd/controlC0: dschaapveld 2764 F.... pulseaudio + CRDA: Error: [Errno 2] No such file or directory + CurrentDmesg: + Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied + dmesg: write failed: Broken pipe + DistroRelease: Ubuntu 12.10 + InstallationDate: Installed on 2012-06-12 (310 days ago) + InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) + MachineType: LENOVO 424049U + MarkForUpload: True + Package: linux (not installed) + ProcFB: + 0 nouveaufb + 1 inteldrmfb + 2 udldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/VG298-root ro quiet splash + ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6 + Tags: quantal running-unity + Uname: Linux 3.5.0-26-generic x86_64 + UpgradeStatus: Upgraded to quantal on 2012-11-02 (167 days ago) + UserGroups: dialout libvirtd rancid sudo + WifiSyslog: + + dmi.bios.date: 12/06/2011 + dmi.bios.vendor: LENOVO + dmi.bios.version: 8AET56WW (1.36 ) + dmi.board.asset.tag: Not Available + dmi.board.name: 424049U + 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:bvr8AET56WW(1.36):bd12/06/2011:svnLENOVO:pn424049U:pvrThinkPadT520:rvnLENOVO:rn424049U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: + dmi.product.name: 424049U + dmi.product.version: ThinkPad T520 + dmi.sys.vendor: LENOVO ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1169959/+attachment/3647738/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1169959 Title: Lenovo ThinkPad T520 4940-49U won't boot with 3.5.0-27 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1169959/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
