[mythtv-users] Tearing when NOT using XV Texture Sync

[Steven Adeff]

On 5/29/07, Rage321 <rage321 at optonline.net> wrote:
> Hey, thank for this post.  I am suffering from tearing and can't figure out
> where the problem came from.  I verified that your below suggested setting
> was indeed in place, do you know of any other settings I can look at?
>
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Thomas Börkel
> Sent: Sunday, May 13, 2007 6:37 PM
> To: mythtv-users
> Subject: [mythtv-users] Tearing when NOT using XV Texture Sync
>
> HI!
>
> I had a tearfree setup for playing SDTV (4:3 and 16:9 anamorph) using FX5200
> and 800x600p, OpenGL Sync on in MythTV and nvidia-settings (NVidia driver
> 9755).
>
> Then I upgraded to NVidia 7600GS and 1920x1080p (still viewing only SDTV).
> Suddenly, I had a little tearing (upper 3% of the screen or so), but only
> with 16:9 recordings.
>
> Playing with nvidia-setings, I discoved, that enabling XV Sync to Texture
> got rid of the tearing, but CPU usage went up by 10% (35% to 45%).
>
> Then I enabled UseEvents option in xorg.conf and CPU usage is back to
> normal.
>
> Anyone else seeing this? Shouldn't OpenGL Sync be enough for tearfree
> playing? Why does XV Sync to Texture help? Any known disadvantages of this?

have you guys looked at
http://www.mythtv.org/wiki/index.php/Configuring_HDTV#NVIDIA
?

-- 
Steve
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