Re: [PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges

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On Wed, Nov 20, 2019 at 12:58:00PM +0100, Karol Herbst wrote:
> overall, what I really want to know is, _why_ does it work on windows?

So do I ;-)

> Or what are we doing differently on Linux so that it doesn't work? If
> anybody has any idea on how we could dig into this and figure it out
> on this level, this would probably allow us to get closer to the root
> cause? no?

Have you tried to use the acpi_rev_override parameter in your system and
does it have any effect?

Also did you try to trace the ACPI _ON/_OFF() methods? I think that
should hopefully reveal something.
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