On Saturday, 2 June 2007 00:17, Olaf Dietsche wrote:
> "Rafael J. Wysocki" <[email protected]> writes:
>
> > On Friday, 1 June 2007 23:12, Olaf Dietsche wrote:
> >> "Rafael J. Wysocki" <[email protected]> writes:
> >>
> >> > On Friday, 1 June 2007 22:27, Olaf Dietsche wrote:
> >> >> When I resume, everything seems to come up (fan becomes busy, disk and
> >> >> dvd spin up for a short time),
> >> >
> >> > Hmm, what about the screen?
> >>
> >> When the laptop is dead, screen remains black.
> >>
> >> When I skip acpi_enter_sleep_state(), the screen works like everything
> >> else.
> >
> > I think you should try s2ram (http://en.opensuse.org/s2ram) as the first step.
>
> It doesn't work. I tried all options "s2ram -f (-s, -p, -m, -r, -a 1, -a 2,
> -a 3)" one after the other.
>
> Since the screen (or any other device) works without problems, when I
> skip acpi_enter_sleep_state(), I don't think it's screen related.
No, it might be, actually. If you skip acpi_enter_sleep_state(), your machine
doesn't really suspend, so in fact you only confirm that your drivers implement
.suspend() and .resume() hooks correctly.
First, you can check if the patch
http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.22-rc3/patches/20-ACPI-preserve-the-ebx-value-in-acpi_copy_wakeup_routine.patch
helps, by chance.
Second, you can use PM_TRACE (Documentation/power/s2ram.txt) to find the
place where it really fails.
Also, please read Documentation/power/basic-pm-debugging.txt .
Greetings,
Rafael
--
"Premature optimization is the root of all evil." - Donald Knuth
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