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[Bug 1511844] Re: System freezes occasionally


Freek, thank you for reporting this and helping make Ubuntu better.

Could you please test the latest upstream kernel available from the very
top line at the top of the page from http://kernel.ubuntu.com/~kernel-
ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and
please do not test the daily folder)? Install instructions are available
at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow
additional upstream developers to examine the issue.

If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:

Where X, Y, and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix the issue, please add the following tags:

Please note, an error to install the kernel does not fit the criteria of

Once testing of the latest upstream kernel is complete, please mark this
report's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

** Tags added: latest-bios-1.05

** Tags added: vivid

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  System freezes occasionally

Status in linux package in Ubuntu:

Bug description:
  Occasionally my system freezes totally. When this happens, the screen
  totally freezes, no mouse movements anymore. Switching to Console via
  Ctrl-Alt-F1 or rebooting via Ctrl-Alt-Del does not work. I have waited
  at least 30 min, but the system doesn't seem to recover.

  Some days my system will run for many hours without any problem,  and
  on other days I experience 2 or 3 freezes in an hour time. So far I
  have not noticed any similarities between the moments of freezing in
  regard to programs running etc.

  I filled in this report after reading
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1509723 which
  seemed to describe the same thing to me, on a same brand laptop. The
  freezes happened both on Ubuntu 15.04 and 15.10

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
   /dev/snd/controlC0:  freek      2223 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Oct 30 21:11:26 2015
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=c4065390-4392-460d-b828-37b12c4605cb
  InstallationDate: Installed on 2015-07-13 (108 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Acer Aspire ES1-711
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=772134c4-7cb5-40d6-b0c7-a6bc4a98efe5 ro quiet splash vt.handoff=7
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.149
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: Upgraded to wily on 2015-10-27 (2 days ago)
  dmi.bios.date: 11/07/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.05
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: EA70_BM
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - A01 Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.05:bd11/07/2014:svnAcer:pnAspireES1-711:pvrV1.05:rvnAcer:rnEA70_BM:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire ES1-711
  dmi.product.version: V1.05
  dmi.sys.vendor: Acer

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