[mythtv-users] VGA verses HDMI

Simon Hobson linux at thehobsons.co.uk
Thu Sep 30 22:53:19 UTC 2010


I wrote:

>Kevin Ross wrote:
>
>>What you describe is called tearing,
>
>Yep, that's it
>http://en.wikipedia.org/wiki/Video_tearing
>shows exactly what I see.
>
>>  and is not caused by the frame rate.  If you're using VDPAU, it's 
>>usually caused by not disabling compositing.  You can disable it by 
>>running:
>>
>>sudo nvidia-xconfig --no-composite
>>
>>and then restart X (or reboot).
>
>No, not using Nvidia - it's an Intel chipset in the box, and I think 
>I'm probably still using whatever the defaults are (were) in 
>MythBuntu 9.04(?) with Myth 0.21.
>A quick look at the settings (via MythWeb) shows that I've got 
>"CPU+" set as DefaultVideoPlaybackProfile

So I went into setup again, and turned on the option to OpenGL sync 
to the vertical frame sync. The tearing seems to have gone :-)

So thanks Kevin for prompting me to look at the right culprit.

-- 
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.


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