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    SubjectRe: does hibernate to disk try hard enough to free memory?
    Date
    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?

    Rafael


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