On 28/06/11 10:39, Brad Campbell wrote: > On 24/06/11 10:41, Brad Campbell wrote: >> On 23/06/11 20:02, Rafael J. Wysocki wrote: >>> On Thursday, June 23, 2011, Brad Campbell wrote: >>>> G'day all, >>>> >>>> I've recently moved from tuxonice to mainline uswsusp. I'm getting intermittent failure to resume >>>> problems. No message in dmesg that I can find, it just boots clean. Is there something I can do to >>>> get some debug info on this? It's really, really annoying. >>>> >>>> About 75% of the time it works perfectly, and I can find no rhyme or reason to why it suddenly just >>>> decides to ignore the saved state. >>>> >>>> 32 bit userspace with a statically linked 64 bit s2disk, s2both& resume. 64 bit kernel. >>> Do you use the i915 driver? >>> >> Indeed I do. > Just a follow up to this. > It looks like adding "early writeout = y" to my /etc/suspend.conf has worked around the problem. > Ok, so after _lots_ of investigating it was not early writeout. The culprit was/is the Ubuntu initramfs scripts. On the occasions it failed to resume (which were many) it turns out /bin/resume was being called prior to udev having created /dev/snapshot. I put a simple wait loop in the resume script to wait for the creation of /dev/snapshot and I've not had a fail to resume since. Curse you asynchronous dynamic device creation <shakes fist> Regards, Brad _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
