[mythtv-users] Strange X CPU usage for 720p input streams

[Paul Robertson]

>I was able to get this problem mostly solved using nvidia-settings,
>making sure all the vsync options were unchecked and making sure to
>put a "nvidia-settings --load-config-only" in my .xinitrc file.  I did
>get some *very* ugly stuttering when messing with nvidia-settings.  I
>changed the "Flat Panel Scaling" to "Fixed adpect ratio scaled" and
>that seemed to help although I have no idea what that setting actually
>does.

I'm using the same sync settings, and loading them as you are.   One
difference is I'm using "Centered",  because if I understand correctly, that
is the only "Flat Panel Scaling" mode that does NO scaling.

>Right now, on my setup, I don't see any Xorg CPU usage when watching live
>720p, but do see the same Xorg CPU usage you do when watching recorded 720p
>programs...

I'm seeing the same thing.  Not surprising if the %CPU usage has something
to do with pre-buffering. ...A little hard to pre-buffer LIVE tv. :)