[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 #26 from Maik Freudenberg <hhfeuer at gmx.de> ---
Created attachment 136416
  --> https://bugs.freedesktop.org/attachment.cgi?id=136416&action=edit
Kernel module to toggle audio function

Thank you, Daniel. I was too blind to see the attachment.
Attaching some c/p work using/abusing bbswitch as a framework and your enable
code. So works like that. Creates a handle /proc/acpi/nvhda which takes ON and
OFF. Since my hardware doesn't have outputs I can't test it farther than
turning on and off.
Can be loaded and used while the proprietary driver is loaded to be used for
further investigations.
- Does the prop. driver react to this immediately, i.e. make audio work?
- If not, does plugging out/in the hdmi cable make it work?
- Are any pci config space changes noticeable?

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