apport information ** Description changed:
Intermittent issue, sometimes forces hard reset. In trying to determine what was happening, I installed netconsole per https://wiki.ubuntu.com/Kernel/Netconsole I have captured the log files per https://wiki.ubuntu.com/DebuggingKernelOops I note that in the dmesg output there is a message for the USB subsystem immediately before the issue, I have a MCE Remote connected via a pair of baluns over a 30m cat5 cable. I used to get a lot of messages about EFI, like: [57844.664077] hub 4-0:1.0: port 2 disabled by hub (EMI?), re-enabling... [57844.664090] usb 4-2: USB disconnect, device number 2 and sometimes the system would lock up. I changed the cabling over to cat7 and grounded the shield on the PC chassis and the issue now only occures occasionally, but this should cause a kernel oops! Thanks, Douglas --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pearless 1538 F.... xfce4-volumed CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'NVidia'/'HDA NVidia at 0xe2000000 irq 16' Mixer name : 'Nvidia GPU 0a HDMI/DP' Components : 'HDA:10de000a,10de0101,00100100' Controls : 16 Simple ctrls : 4 DistroRelease: Ubuntu 11.10 HibernationDevice: RESUME=UUID=51a47e30-bc92-49eb-a93c-f1eb6f88e603 InstallationMedia: Mythbuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) IwConfig: lo no wireless extensions. eth0 no wireless extensions. NonfreeKernelModules: nvidia Package: linux (not installed) ProcEnviron: LANGUAGE=en_NZ:en PATH=(custom, no user) LANG=en_NZ.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-17-generic root=UUID=37eafb9c-737e-4d03-b518-fa78e3e6e595 ro debug ignore_loglevel ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22 RelatedPackageVersions: linux-restricted-modules-3.0.0-17-generic N/A linux-backports-modules-3.0.0-17-generic N/A linux-firmware 1.60 RfKill: Error: [Errno 2] No such file or directory Tags: oneiric Uname: Linux 3.0.0-17-generic x86_64 UpgradeStatus: Upgraded to oneiric on 2012-02-07 (54 days ago) UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare video dmi.bios.date: 08/04/2006 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F2 dmi.board.name: 945P-S3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd08/04/2006:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945P-S3:rvr:cvn:ct3:cvr: --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pearless 1538 F.... xfce4-volumed CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'NVidia'/'HDA NVidia at 0xe2000000 irq 16' Mixer name : 'Nvidia GPU 0a HDMI/DP' Components : 'HDA:10de000a,10de0101,00100100' Controls : 16 Simple ctrls : 4 DistroRelease: Ubuntu 11.10 HibernationDevice: RESUME=UUID=51a47e30-bc92-49eb-a93c-f1eb6f88e603 InstallationMedia: Mythbuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) IwConfig: lo no wireless extensions. eth0 no wireless extensions. NonfreeKernelModules: nvidia Package: linux (not installed) ProcEnviron: LANGUAGE=en_NZ:en PATH=(custom, no user) LANG=en_NZ.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-17-generic root=UUID=37eafb9c-737e-4d03-b518-fa78e3e6e595 ro debug ignore_loglevel ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22 RelatedPackageVersions: linux-restricted-modules-3.0.0-17-generic N/A linux-backports-modules-3.0.0-17-generic N/A linux-firmware 1.60 RfKill: Error: [Errno 2] No such file or directory Tags: oneiric Uname: Linux 3.0.0-17-generic x86_64 UpgradeStatus: Upgraded to oneiric on 2012-02-07 (54 days ago) UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare video dmi.bios.date: 08/04/2006 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F2 dmi.board.name: 945P-S3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd08/04/2006:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945P-S3:rvr:cvn:ct3:cvr: + --- + AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. + ApportVersion: 1.23-0ubuntu4 + Architecture: amd64 + ArecordDevices: **** List of CAPTURE Hardware Devices **** + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: pearless 1538 F.... xfce4-volumed + CRDA: Error: [Errno 2] No such file or directory + Card0.Amixer.info: + Card hw:0 'NVidia'/'HDA NVidia at 0xe2000000 irq 16' + Mixer name : 'Nvidia GPU 0a HDMI/DP' + Components : 'HDA:10de000a,10de0101,00100100' + Controls : 16 + Simple ctrls : 4 + DistroRelease: Ubuntu 11.10 + HibernationDevice: RESUME=UUID=51a47e30-bc92-49eb-a93c-f1eb6f88e603 + InstallationMedia: Mythbuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) + IwConfig: + lo no wireless extensions. + + eth0 no wireless extensions. + NonfreeKernelModules: nvidia + Package: linux 3.0.0.17.20 + PackageArchitecture: amd64 + ProcEnviron: + LANGUAGE=en_NZ:en + PATH=(custom, no user) + LANG=en_NZ.UTF-8 + SHELL=/bin/bash + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-17-generic root=UUID=37eafb9c-737e-4d03-b518-fa78e3e6e595 ro debug ignore_loglevel + ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22 + RelatedPackageVersions: + linux-restricted-modules-3.0.0-17-generic N/A + linux-backports-modules-3.0.0-17-generic N/A + linux-firmware 1.60 + RfKill: Error: [Errno 2] No such file or directory + Tags: oneiric + Uname: Linux 3.0.0-17-generic x86_64 + UpgradeStatus: Upgraded to oneiric on 2012-02-07 (55 days ago) + UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare video + dmi.bios.date: 08/04/2006 + dmi.bios.vendor: Award Software International, Inc. + dmi.bios.version: F2 + dmi.board.name: 945P-S3 + dmi.board.vendor: Gigabyte Technology Co., Ltd. + dmi.chassis.type: 3 + dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd08/04/2006:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945P-S3:rvr:cvn:ct3:cvr: ** Attachment added: "AcpiTables.txt" https://bugs.launchpad.net/bugs/965664/+attachment/2987395/+files/AcpiTables.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/965664 Title: BUG: unable to handle kernel NULL pointer dereference at 00000000 00000050 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/965664/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
