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    SubjectRe: does hibernate to disk try hard enough to free memory?
    Date
    On Tuesday, February 22, 2011, Martin Steigerwald wrote:
    > Am Tuesday 22 February 2011 schrieb Rafael J. Wysocki:
    > > On Tuesday, February 22, 2011, Martin Steigerwald wrote:
    > > > Hi!
    > > >
    > > > Since Radeon KMS I often have it that my ThinkPad T42 with 2 MiB of
    > > > RAM is not able to allocate memory for the hibernation image. Before
    > > > KMS hibernation only very rarely failed for that reason.
    > > >
    > > > Often I run without compositing at all as I believe this might spare
    > > > some pages as well. But this doesn't always help.
    > > >
    > > > It complains that to less pages could be freed. For example with
    > > > kernel 2.6.37:
    > > >
    > > > Feb 16 00:15:00 shambhala kernel: PM: Creating hibernation image:
    > > > Feb 16 00:15:00 shambhala kernel: PM: Need to copy 186577 pages
    > > > Feb 16 00:15:00 shambhala kernel: PM: Normal pages needed: 114411 +
    > > > 1024, available pages: 112767
    > > > Feb 16 00:15:00 shambhala kernel: PM: Not enough free memory
    > > > Feb 16 00:15:00 shambhala kernel: PM: Error -12 creating hibernation
    > > > image Feb 16 00:15:00 shambhala kernel: Extended CMOS year: 2000
    > > > Feb 16 00:15:00 shambhala kernel: ACPI: Waking up from system sleep
    > > > state S4
    > > > Feb 16 00:15:00 shambhala kernel: PM: early recover of devices
    > > > complete after 0.376 msecs
    > >
    > > What's the value in /sys/power/image_size?
    >
    > shambhala:~> cat /sys/power/image_size
    > 844206080
    >
    > Should I try with less?

    Yes, please. Try with 700000000 for example.

    Thanks,
    Rafael


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