[alsa-devel] module snd-atiixp issue with suspend/hibernate/resume

[Ryan Dunn]

Thanks Takashi, I appreciate your help so far.  I would normally agree with
you that it is a BIOS issue, however, the machine is a dualboot with WinXP,
where the mute LED works properly after a resume.  Do you have any other
suggestions on where the issue may be?  I hate to keep bugging the list for
such a small issue, but I'm not familiar with the code at all.  When I get
more free time, I'll try to trace through the resume path to see if I can
find anything.  How does the driver actually toggle the LED?  Is the
register a physical register on the card that the hardware reads?  Or does
the code do something else to toggle the LED?

Ryan

On Mon, May 4, 2009 at 3:02 AM, Takashi Iwai <tiwai at suse.de> wrote:

> At Thu, 30 Apr 2009 22:24:35 -0400,
> Ryan Dunn wrote:
> >
> > I apologize for the list spam.  I didn't realize that this bit is only
> set
> > when the led is on.  So with that here are diffs of the regs with and
> without
> > mute enabled, before and after suspend.
> > Before suspend:
> > diff regs_w-quirk.txt regs_w-quirk+mute.txt
> > 2c2
> > < 0:02 = 1e1e
> > ---
> > > 0:02 = 9e1e
> > 20c20
> > < 0:26 = 000f
> > ---
> > > 0:26 = 800f
> >
> > After resume:
> > diff regs_w-quirk_after_resume.txt regs_w-quirk_after_resume+mute.txt
> > 2c2
> > < 0:02 = 1e1e
> > ---
> > > 0:02 = 9e1e
> > 20c20
> > < 0:26 = 000f
> > ---
> > > 0:26 = 800f
> >
> > So it looks as if the registers are all ok after a resume, but the LED
> doesn't
> > turn back on.
>
> Then I'd say it's rather a BIOS problem.
>
>
> Takashi
>