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

Warner Losh wrote:
> 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...

My serial port.  It's named UART in the AML, that's all.  Setting it to 
D3 hangs the system.

-Nate