On Fri, 14 Aug 2009, Rafael J. Wysocki wrote:
On Friday 14 August 2009, Alan Stern wrote:
quoted
On Thu, 13 Aug 2009, Rafael J. Wysocki wrote:
quoted
quoted
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...
Alan Stern