On Friday 14 August 2009, Rafael J. Wysocki wrote: > On Friday 14 August 2009, Alan Stern wrote: > > On Fri, 14 Aug 2009, Rafael J. Wysocki wrote: > > > > > On Friday 14 August 2009, Alan Stern wrote: > > > > On Thu, 13 Aug 2009, Rafael J. Wysocki wrote: > > > > > > > > > > No, I've only tested it with a few selected drivers. I'm going to try the > > > > > > "async everyone" scenario, though. > > > > > > > > > > On HP nx6325 booted with init=/bin/bash it doesn't pass the > > > > > 'echo devices > /sys/power/pm_test && echo mem > /sys/power/state' test. > > > > > > > > > > The suspend part actually seems to work, but the resume part crashes > > > > > miserably. > > > > > > > > Any details? Can you tell where it crashes? > > > > > > Unfortunately it ends up in a continuous flood of backtraces, so I can't > > > say much. > > > > Same sort of thing happened with me, but it appeared to happen during > > suspend. (I say "appeared" because the system froze for a while at the > > start of the suspend until I hit a key. This may be related to all the > > recent churn in the TTY layer, combined with the fact that I was using > > a serial console. It didn't help -- none of the backtraces got sent > > out the serial port.) > > > > > However, if I set async_suspend for all PCI devices, as well as for ACPI battery > > > and i8042, everything apparently works, even with real suspend-resume. > > > > I think it would be worthwhile to track down these unknown problems and > > dependencies. It won't be easy, though... > > Agreed. One data point: I set async_syspend for all ACPI devices in addition to PCI devices and that broke things. Which isn't really strange given that PCI devices generally have ACPI counterparts linked to them that I guess should be suspended later. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
