Re: ehci_hcd related S3 lockup on ASUS laptops, again

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On Wed, 18 Apr 2012, Rafael J. Wysocki wrote:

> > Yes, there are ways to work around this.  At the moment I'm not sure 
> > what would be best; we can ask Rafael.  One big remaining puzzle: Why 
> > are the EHCI controllers the only devices that cause a crash when left 
> > in D3 during suspend?  We may never know...
> 
> Are they put into D3 by ACPI or using the native PCI PM?

PCI PM, definitely.  Maybe ACPI gets into the act as well, but I doubt 
it.  How would we tell?

Alan Stern

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