[mythtv-users] IONITX-C tearing 1080p

Mark Kendall mark.kendall at gmail.com
Sun Dec 6 08:43:16 UTC 2009

2009/12/6 Chad Voelker <chad.voelker at gmail.com>:
> Hello,
> I have the Zotec ION ITX C board as a FE. It is showing considerable tearing
> on 1080i, but perfect video with 720p both coming from a HD Homerun.
> I've validated the following already:
> * VDPAU is set up in the playback profile
> * Running the most current nvidia driver (190.42)
> * Added the "Composite" "Disable" option to the "Extensions" section of
> xorg.config
> * Added "TripleBuffer" "True" option to the "Device" section of xorg.config
> * Sync to VBlank checked in OpenGL Settings section of NVIDIA X Server
> Settings


I would certainly disable the opengl sync to vblank - it should do
nothing for vdpau playback but may force the driver to use the blit
presentation path which may be causing the tearing. I would also
remove the triple buffer option - I've never heard of anyone needing
to use that.



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