[Nouveau] [Bug 74903] [NV34] TV Load not detected in X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74903

--- Comment #4 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #3)
> I tried booting with param video=TV1:e as (poorly) documented way to force

I think you want TV-1:e.

> tv on. dmesg log and X log now plays nice as if the tv was indeed connected,
> however, I can't see anything past kms trigger.
> 
> Is there a way to truly override load detection? As I said, the other tv is
> just fine, the dmesg shows tv connected.

There's a nouveau.tv_disable which is listed as "Disable TV-out detection". I
kind of assume it just ignores the outputs entirely, but who knows. You may
want to peruse drivers/gpu/drm/nouveau/dispnv04/tvnv17.c:nv17_tv_detect

It has special exceptions for a couple of cards with quirks. There's a way to
return a "status unknown" -- try that?

But it's a little odd that it worked fine before -- what was the "before"
kernel?

FTR, S-video worked fine on my NV44 last I checked (~kernel 3.11 or so).

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