[Nouveau] [Bug 31957] Video Noise on HDMI output

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31957

--- Comment #20 from James <buzzbuzz22 at hotmail.com> 2010-12-14 04:03:16 PST ---
The following command seems to help with the noise problem.
xrandr --output HDMI-1 --set 'scaling mode' None

This forces the GPU to use the same mode for (1) and (2) and thus manage to
override the nouveau default (noisy) mode for (2)

So, I have a work around for now. I will further investigate the EDID problems
which should then fix the noise during boot problems. I.e. Nouveau setting the
wrong default mode during boot up.


Other variations of that actually crash X, so I will be raising a bug for
xrandr --output default --set 'scaling mode' None
If I only had the HDMI-1 connected, I would have thought that "default" would
have modified HDMI-1.

Other variations (Capital S for Scaling) produce other problems.
xrandr --output HDMI-1 --set "Scaling mode" None 
X Error of failed request:  BadName (named color or font does not exist)
  Major opcode of failed request:  150 (RANDR)
  Minor opcode of failed request:  11 (RRQueryOutputProperty)
  Serial number of failed request:  27
  Current serial number in output stream:  27

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