[Nouveau] [PATCH v3 0/4] nouveau RPM fixes for Optimus (final)

[Ilia Mirkin]

On Fri, Jul 15, 2016 at 9:12 AM, Peter Wu <peter at lekensteyn.nl> wrote:
> Hi,
>
> Here are two patches to fix an issue reported on kernel bugzilla (infinite loop
> due to unchecked function) and a more important fix to fix hanging Optimus
> machines when runtime PM is enabled (with pm/pci patches).
>
> These are the final patches targeting v4.8. Changes compared to v2[1]:
> collected R-b from Hans and Mika and fixed a minor comment style issue.
>
> I recommend it to be merged before the pci/pm patches[2], otherwise there is a
> window where newer Nvidia Optimus laptops might fail to runtime resume and/or
> lock up.  Once the pci/pm branch is merged I will propose another patch to
> improve reliability[3].
>
> Known issue with patch 4: when a Nvidia HDMI audio function is present, the
> bridge will not suspend and hence the Nvidia card will still be powered. Fixing

That's basically all optimus gpu's, right? Anything GT21x+ has a HDMI
audio subfunction, and prior to that, the nvidia gpu tended to be the
only gpu, or hard-muxed.

If that's the case, that's pretty much a non-starter, IMO.

  -ilia