[Nouveau] [Bug 60680] [NV96] HDMI is connected and has mode, TV says "no signal"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60680

--- Comment #18 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Created attachment 92185
  --> https://bugs.freedesktop.org/attachment.cgi?id=92185&action=edit
vbios-pq1.patch

Pick any failing kernel that you like, and try applying this patch. Boot with
nouveau.debug=VBIOS=trace,PDISP=debug which should just get the logs we care
about.

BTW, my observation is that IO condition 5 is met in the old kernels, but not
met in the new ones. This changes the execution flow, of course.

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