[Bug 117131] vga_switcheroo does not switch IGP -> DIS ( IGP == i915 , DIS == radeon )

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=117131

--- Comment #26 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Jason Vas Dias from comment #22)
> It looks like the Intel driver is actually internally using the Radeon
> driver?

No.  The drivers are independent. vga_switcheroo provides the intermediary for
alerting the drivers when the user has switched the mux for muxed laptops.  For
muxless laptops, the dGPU driver uses vga_switcheroo and ATPX to power down the
dGPU when it's not in use.  The IGP driver is not involved in that.

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