Re: [Xen-devel] xHCI not waking up from D3 after S3 Resume on Ivybridge

[Oliver Neukum <oneukum@xxxxxxx>]

Am Montag, 19. März 2012, 14:32:01 schrieb Tom Goetz:
> > The e1000e is also MSI?
> 
> Yes. The e1000e getting the xHCI's wake ups is only on one machine. I assume 
> thats a BIOS bug. The broad based issue is that on two manufacturers 
> Ivybridge plus an Intel SDP Ivybridge, xHCI will not wake up from D3 when a 
> USB device is plugged in.
> 
> > In
> > other words the issues you are having is that the MSI after resume are
> > not delivered - but some are ?
> 
> Only D3 wake ups (ACPI and PME) are not being delivered. If I change the 
> runtime power policy for the device from "auto" to "on" xHCI works fine.
> 

This indicates that xhci is not turned into a sources for wakeups
because the device is already asleep and suspend() won't be
called twice.

Does it work if you suspend with a device for which autosuspend isn't on?

        Regards
                Oliver

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