Re: [linux-pm] ehci_hcd related S3 lockup on ASUS laptops, again

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On Wed, Apr 18, 2012 at 11:44:16PM +0200, 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?
> 
> If ACPI is involved, the dev_printk() in acpi_pci_set_power_state() should
> trigger.
And it apparently doesn't?

-- 
WBR, wRAR

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