[Intel-gfx] [PATCH v5 00/12] Enable GPU switching on pre-retina?MacBook Pro

[Lukas Wunner]

Hi Alex,

On Tue, Mar 15, 2016 at 02:33:56PM -0400, Alex Deucher wrote:
> On Tue, Mar 15, 2016 at 1:54 PM, Lukas Wunner <lukas at wunner.de> wrote:
> > On Sat, Mar 05, 2016 at 01:10:56PM -0500, Alex Deucher wrote:
> >> Is there any reason to make use of the mux?
> >
> > Performance (lower latency => no need for framebuffer writes over PCIe),
> > improved battery life (no need to use 2 GPUs simultaneously).
> >
> > Technically you can't just ignore that the mux is there on the MBP
> > because the kernel has no control over the GPU used on boot.
> > (It's determined by EFI).
> >
> Is GPU power switching also handled by the mux?  Is it independent of
> the display mux?

Yes and yes.

Best regards,

Lukas