[Nouveau] [Bug 75985] [NVC1] HDMI audio device only visible after rescan

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75985

--- Comment #12 from Peter Wu <peter at lekensteyn.nl> ---
(In reply to Maik Freudenberg from comment #11)
> Some interesting information from Aaron Plattner of Nvidia:
> https://devtalk.nvidia.com/default/topic/1024022/linux/gtx-1060-no-audio-
> over-hdmi-only-hda-intel-detected-azalia/post/5211273/#5211273

Interesting bit about the PCI configuration space. Essentially this is the
command that Aaron posted. On my laptop that area is somewhere after the AER
capability and is all zeroes, it does not seem to make sense.

Aarons command is essentially the above remove/rescan, but including:
setpci -s 01:00.0 0x488.l=0x2000000:0x2000000

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