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$ 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
** Affects: linux (Ubuntu)
Importance: Medium
Status: Incomplete
** Tags: apport-bug i386 maverick
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System freeze when hibernate fails
https://bugs.launchpad.net/bugs/808698
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