Re: [PATCH] Please test: new ACPI release (20041105) import

From: Nate Lawson <nate_at_root.org>
Subject: Re: [PATCH] Please test: new ACPI release (20041105) import
Date: Wed, 17 Nov 2004 17:53:43 -0800

> Warner Losh wrote:
> >>I do suspect that this is a PCI power issue and not an ACPI issue, but
> >>I'd like to know if it shows up on more models. It is most obvious when
> >>playing a stream as the buffers keep emptying and the sound stops after
> >>a short time. Music is clearly too fast and high pitched, but at 10%
> >>overspeed, some may not notice. (Does Dr. Dre sound much different 10%
> >>faster?)
> > 
> > I've flipped the sense of the PCI power sysctl in current.  Once
> > that's sanner, we should investigate setting the power states on
> > resume.  Not sure what to do about suspend, since I think that acpi
> > has different notions of what D level to put a device in for different
> > S levels and it would likely have to take care of that after giving
> > the device a chance to save state.
> > 
> > Warner
> 
> I have a patch in my tree to do this.  I'll post it once it's 
> well-tested.  At the moment, setting UART to D3 appears to hang the 
> system and I'm not sure why.

What do you mean 'UART'?  I'm confused...

Warner