[Bug 808698] Re: System freeze when hibernate fails

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: acpid (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/808698

Title:
  System freeze when hibernate fails

Status in “acpid” package in Ubuntu:
  Confirmed

Bug description:
  $ swapon -s; free -m
  Filename				Type		Size	Used	Priority
  /dev/sda5                               partition	1998844	5784	1
  /dev/sdb5                               partition	4193276	0	0
               total       used       free     shared    buffers     cached
  Mem:          2012       1961         50          0         17        474
  -/+ buffers/cache:       1470        542
  Swap:         6046          5       6041

  /var/log/syslog snippet
  Jul 11 10:08:58 BaylyJ4 kernel: [  888.017366] PM: Creating hibernation image:
  Jul 11 10:08:58 BaylyJ4 kernel: [  888.020009] PM: Need to copy 218761 pages
  Jul 11 10:08:58 BaylyJ4 kernel: [  888.020009] PM: Normal pages needed: 157118 + 1024, available pages: 70060
  Jul 11 10:08:58 BaylyJ4 kernel: [  888.020009] PM: Not enough free memory
  Jul 11 10:08:58 BaylyJ4 kernel: [  888.020009] PM: Error -12 creating hibernation image

  When hibernating, if there isn't enough free memory, the hibernate
  file cannot be created (as expected), however instead of the system
  reporting this and returning to the previous state, it appears to
  freeze allowing no input - Ctrl + Alt + F1 doesn't give me a shell
  login prompt. The machine will remain running indefinitely and has to
  be power cycled. Upon restart, I am given a standard login prompt.

  Expected behaviour would be that the OS returns the user to a state
  where they can safely close any critical applications.

  As an aside, I'm investigating why my system will not hibernate when I
  have a total of 6GBi swap (2GBi + 4GBi), of which 5MBi is used, and
  only 2GBi of RAM installed.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: acpid 1.0.10-5ubuntu4
  ProcVersionSignature: Ubuntu 2.6.35-30.54-generic 2.6.35.13
  Uname: Linux 2.6.35-30-generic i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Mon Jul 11 10:34:40 2011
  ExecutablePath: /usr/sbin/acpid
  InstallationMedia: Ubuntu 10.04.2 LTS "Lucid Lynx" - Release i386 (20110211.1)
  ProcEnviron: PATH=(custom, no user)
  SourcePackage: acpid

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