Public bug reported: Since upgrading to utopic, I've been experiencing occasional system lockups - when this occurs, nothing at all is responsive including the mouse pointer and Alt-SysRq combinations.
Lockups only occur infrequently - perhaps once every day or two days - so testing this is going to be slow and problematic. So far, rolling back to the trusty kernel seems to have fixed it, so it seems unlikely to be a hardware problem. I'm going to reboot into http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.17.4-vivid/ now and run with that for a few days. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-25-generic 3.16.0-25.33 ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7 Uname: Linux 3.16.0-25-generic x86_64 ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: maxb 3916 F.... pulseaudio /dev/snd/controlC0: maxb 3916 F.... pulseaudio CurrentDesktop: Unity Date: Sun Nov 30 15:32:28 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=143e606d-b6a1-4350-af21-aa2f83f8d351 InstallationDate: Installed on 2014-05-29 (185 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) IwConfig: eth0 no wireless extensions. virbr0 no wireless extensions. lo no wireless extensions. MachineType: Dell Inc. Precision T1700 ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash nomdmonddf nomdmonisw vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-25-generic N/A linux-backports-modules-3.16.0-25-generic N/A linux-firmware 1.138 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to utopic on 2014-11-02 (27 days ago) dmi.bios.date: 04/25/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 073MMW dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd04/25/2014:svnDellInc.:pnPrecisionT1700:pvr01:rvnDellInc.:rn073MMW:rvrA02:cvnDellInc.:ct6:cvr: dmi.product.name: Precision T1700 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug utopic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1397694 Title: System lockups with utopic kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1397694/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
