Re: S3 broken Samsung P35 - howto debug?

[Oliver Dawid <oliver-csNNzRR391izQB+pC5nmwQ@public.gmane.org>]

Hi Matthias,

Matthias Hentges wrote:

> Did you say yes to "Power management options / ACPI / Use compatibily
> PCI resume code" after patching?

Yes I did as you proposed.

> For testing purposes, I'd go with the buggy Samsung DSDT.

Since errors in dsdt seem not to touch any suspend-to-* problem, this is 
a good idea.

>>- which modules are known not to work properly with acpi sleep/ resume? Which 
>>should be unloaded before going to sleep?
> 
> The following things break resume on the P30 (break == freeze on resume)
> 
> - Active sound driver, be it OSS or ALSA. Must be unloaded before
> suspending.
> - radeonfb
> - Accelerated X (DRI or fglrx)
> 
> For testing purposes I'd recommend using a minimalistic kernel .config
> (no usb, firewire, preempt, AGP etc.)

Hmm wouldn't it be good to collect which modules are hanging? Or is it 
platform-dependent?

As dri or fglrx are freezing the system, do you need to abandon X before 
going to sleep?

> There's a little script to restore lost PCI configuration DATA after a
> resume. 
> I've managed to get the backlight on, but that's it heh.

so you aren't sitting totally in the dark but have some miserable lamp 
to illuminate your keyboard ;-)

Oliver


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