[Bug 106597] [vga_switcheroo] commit 07f4f97d7b4bf325d9f558c5b58230387e4e57e0 breaks dpm on Alienware 15R3

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Comment # 14 on bug 106597 from
(In reply to Lukas Wunner from comment #5)

> Also, there are Dell machines which can be switched to one of two modes in
> the BIOS: In one mode, audio is streamed to external displays via the Intel
> HDA, in the other mode, it's streamed via the AMD HDA. In the former mode,
> the AMD HDA serves no purpose and should thus be hidden as per this patch:
> https://lkml.org/lkml/2018/4/20/244
>

Well, this is a Dell machine, but there is no BIOS option to switch anything
regarding video/audio. However, it is possible that there is something wonky
about how the chip is wired, because all other Alienware laptops do sport
NVIDIA gpus and it could be that the wiring is the same.


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