[Bug 26582] XRandR property "tv standard" doesn't work with KMS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=26582

--- Comment #39 from Bob Ham <rah at bash.sh> 2010-04-08 15:55:16 PDT ---
(In reply to comment #37)
> Does changing the following regs help?
> 
> avivotool regset 0x404 0x0000800b
> avivotool regset 0x430 0x00620030
> avivotool regset 0x43c 0x00000006

Yes, this (finally) sets the TV output to correct, stable PAL output.


(In reply to comment #38)
> Created an attachment (id=34818)
 View: https://bugs.freedesktop.org/attachment.cgi?id=34818
 Review: https://bugs.freedesktop.org/review?bug=26582&attachment=34818

> possible fix
> 
> Does this drm patch help?  It looks like the tv is rather picky about it's
> clock. using the fractional fb div should get us much more exact.

Strangely, no.  After applying this patch, the output is closer to PAL than the
previous close-to-PAL effort:

  http://pkl.net/~node/misc/radeon-almost-pal-2.jpg


When setting the registers as above, the output is a proper PAL signal. 
However, it is unstable.  Specifically, after displaying a full-screen video on
a different monitor, the TV output will start flickering with what looks like a
black box coming out of the noise in between frames.

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