On Sunday 26 August 2007 22:19:34 Marty wrote:
> After looking at this problem for several days, I have noticed some
> patterns. I hope this helps.
>
> 1) Only sports and news broadcasts seem to exhibit the problem
> frequently.
>
> 2) Movies and old TV reruns never or rarely exhibit the problem.
> Commercials exhibit the problem only if high contrast and sharp color
> transitions is used.
>
> 3) The sync failing is sensitive to graphics overlays, especially
> text. This high contrast is rare in natural images, so it may be
> avoided for technical or esthetic reasons in most programming. Only
> a small bit of graphics is enough to trigger the failure. It stops
> as soon as the graphics disappear.
>
> 4) One news station mentioned that they broadcast in HDTV. This
> suggests a possible connection with the conversion process from HDTV.
> News and sports broadcasts seem the most likely to use HDTV.
Marty,
Did you make the register dumps from the same device? I ask because some
of the registers of the 0.7.4 version indicate that it was from the
working PVR150, not from the one that has the sync problems. The two
cards have slightly different chips: the working one has a -24
revision, the other one a -23 revision. But to do a correct diff I need
dumps from the same device.
It is still correct, right, that ivtv0 works fine and ivtv1 doesn't?
And that both work with ivtv-0.7.4?
Oh, I have one other long shot that you can try: add the ivtv module
option 'newi2c=1' when loading ivtv.
Regards,
Hans
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