On Sunday 29 November 2009, Ferenc Wagner wrote: > "Rafael J. Wysocki" <rjw@xxxxxxx> writes: > > > On Saturday 28 November 2009, Ferenc Wagner wrote: > >> "Rafael J. Wysocki" <rjw@xxxxxxx> writes: > >> > >>> On Wednesday 18 November 2009, Ferenc Wagner wrote: > >>> > >>>> Ferenc Wagner <wferi@xxxxxxx> writes: > >>>> > >>>>> Since I've instrumented s2disk and the hibernation path, no freeze > >>>>> happened during hibernating the machine. > >>>> > >>>> Not until I removed the delays from hibernation_platform_enter(), which > >>>> were put there previously to get step-by-step feedback. Removing them > >>>> again resulted in a freeze in short course, maybe just two hibernations > >>>> later. The instrumentation shows it stuck in dpm_suspend_start(PMSG_HIBERNATE). > >>>> Does it mean that some device driver is at fault? > >>> > >>> A driver or one of the platform hooks. > >>> > >>>> I'll check if it always fails at the same point (although tracing into > >>>> dpm_suspend_start isn't pure fun because of the multitude of devices it > >>>> loops over). Is there any way to get printk output from that phase? > >>> > >>> Compile with CONFIG_PM_VERBOSE (it does mean exactly that). > >> > >> The last message now was: > >> > >> e100: 0000:02:08.0: hibernate, may wakeup > >> > >> Looks like hibernating the e100 driver is unstable. > > > > Can you verify that by trying to hibernate without the e100 driver? > > Not really, as I still can't reliable reproduce the issue. Since I'm > running with suspend loglevel = 8, it's happened only twice (in a row), > with seemingly exact same console output. Some earlier freezes also > happened in dpm_suspend_start, at least. However, I can certainly add > e100 to SUSPEND_MODULES under /etc/pm/config.d, and continue running > with that. That's what I'd do. In addition to that, you can run multiple hibernation/resume cycles in a tight loop using the RTC wakealarm. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
