Hi Joseph, the issue started happening after the upgrade from 15.04 to wily. Before I would have freezes only when unplugging a usb hard drive and they were related to powersave tools pm-powersave, laptop-mode. The current freezes also only seem to only happen when on battery so they might also be related to powersave issues. The only other thing I noticed is that I find a certain sequence of events related to the Network Manager renewing the DHCP lease in the logs shortly before the crash. At this point the Network manager resets the device MPU and the system MPU value and seems to fail at some point. But it could still be coincidence. I will look at trying out the new kernels but obviously I will be running into a problem because I am using proprietary Broadcom WIFI drivers that have to be uninstalled before changing the kernel. I will have to first make sure that I have the files to reinstall them after a kernel upgrade. I am not sure which files they are and were to fin them. Looking at the above DHCP/MTU issues this driver might even be connected to the problem. Kind Regards Thomas
On 10.11.2015 02:54, Joseph Salisbury wrote: > Did this issue start happening after an update/upgrade? Was there a > prior kernel version where you were not having this particular problem? > > Would it be possible for you to test the latest upstream kernel? Refer > to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest > v4.3 kernel[0]. > > If this bug is fixed in the mainline kernel, please add the following > tag 'kernel-fixed-upstream'. > > If the mainline kernel does not fix this bug, please add the tag: > 'kernel-bug-exists-upstream'. > > Once testing of the upstream kernel is complete, please mark this bug as > "Confirmed". > > > Thanks in advance. > > [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3-wily/ > > ** Changed in: linux (Ubuntu) > Importance: Undecided => Medium > > ** Changed in: linux (Ubuntu) > Status: Confirmed => 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/1514022 Title: System freeze Status in linux package in Ubuntu: Incomplete Bug description: System freezes at random occasions with no recovery (tried ctrl alt F1, ctrl alt t, etc.) No traces in the syslog. Fans keep running so system seems to be under load. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-17-generic 4.2.0-17.21 ProcVersionSignature: Ubuntu 4.2.0-17.21-generic 4.2.3 Uname: Linux 4.2.0-17-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: thomas 3499 F...m pulseaudio /dev/snd/controlC0: thomas 3499 F.... pulseaudio CurrentDesktop: Unity Date: Sat Nov 7 12:54:52 2015 HibernationDevice: RESUME=UUID=ed1eaca8-c94e-4f78-974d-dc28348c9f3a InstallationDate: Installed on 2015-04-26 (194 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Hewlett-Packard HP EliteBook 8470p ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-17-generic root=UUID=39f2e8b4-3b7f-49fa-8e72-91650c69d50e ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-17-generic N/A linux-backports-modules-4.2.0-17-generic N/A linux-firmware 1.149.1 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: Upgraded to wily on 2015-11-03 (3 days ago) dmi.bios.date: 07/16/2013 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68ICF Ver. F.43 dmi.board.name: 179B dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 42.36 dmi.chassis.asset.tag: CNU342CNXN dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68ICFVer.F.43:bd07/16/2013:svnHewlett-Packard:pnHPEliteBook8470p:pvrA1029D1103:rvnHewlett-Packard:rn179B:rvrKBCVersion42.36:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 8470p dmi.product.version: A1029D1103 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1514022/+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
