Am Tuesday 22 February 2011 schrieb Rafael J. Wysocki: > 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. I replaced dropping by settings image_size to this valua and the ThinkPad hibernated with KMail open. Thus seems to work, but I will test a bit further. Where does the higher value previously set come from? Autotuning? Is there anything that can be improved with autotuning? If yes, I can file a bug report. Otherwise I just try to find a good value for image size and be done with it. Thanks, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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