[Nouveau] [Bug 29455] Nouveau TV-out incorrectly detecting load on NV18

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29455

--- Comment #10 from Francisco Jerez <currojerez at riseup.net> 2010-08-13 05:51:45 PDT ---
Created an attachment (id=37847)
 View: https://bugs.freedesktop.org/attachment.cgi?id=37847
 Review: https://bugs.freedesktop.org/review?bug=29455&attachment=37847

nouveau_dac_detect_debug.patch

(In reply to comment #9)
> (In reply to comment #8)
> 
> > Most likely there's a GPIO-controlled switch you have to poke to make TV-out
> > work: the attached patch is just a wild guess, if it has no effect you could
> > try to play a bit with the "gpio->line" parameter (values in 7-9 and 2-4 should
> > be safe).
> 
> I applied the patch (manually) to the 2.6.35 Kernel from Debian (experimental),
> but it had no effect. I don't feel comfortable fiddling around with the values
> for "gpio->line" without having the slightest idea what this would or should
> cause. The value in your patch was "7", so there would still be 5 possibilities
> left to try?
> 
Yeah, the attached patch adds some debugging output that may be useful for you
to see the effects of your changes, "output=2 sample=YXXXXXXX" with Y!=0 means
load is incorrectly being detected in your tv output.

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