Re: [1/3] 2.6.23-rc6: known regressions v2 --- ieee1394, empty suspend stopped working

Rafael J. Wysocki
2007-09-16T11:57:39Z

On Sunday, 16 September 2007 11:35, Stefan Richter wrote:
> Michal Piotrowski wrote:
> > FireWire
>
> Could you title it "IEEE1394" instead? (According to the information so
> far, it's in drivers/ieee1394, not drivers/firewire.)
>
> > Subject : empty suspend stopped working around 2.6.23-rc4
> > References : http://lkml.org/lkml/2007/9/11/326
> > Last known good : ?
> > Submitter : Pavel Machek <pavel@ucw.cz>
> > Caused-By : ?
> > Handled-By : ?
> > Status : unknown
>
> I did a quick test on my main test machine, a Mac mini running x86-64
> Linux. Regardless whether swap is on or off and whether ieee1394 and
> ohci1394 are loaded or not, it always behaves the same. It does
> something, then ends up with power LED off but a non-blinking cursor,
> i.e. _, still shown on the text console. Is this good or bad?

Bad. It's supposed to power off the machine.

Can you please try "echo test > /sys/power/disk" before the hibernation?

After that "echo disk > /sys/power/state" should only "suspend" the box
for several seconds and come back to the command prompt.

If that fails, please try

# echo testproc > /sys/power/disk
# echo disk > /sys/power/state

and see if this returns to the command prompt.

Greetings,
Rafael