[mythtv-users] AppleTV + Mythbuntu

[Scott D. Davilla]

>I've spotted something that might be the issue :
>
>   Attribute 'GPU2DClockFreqs' (appletv:0.0): 200,720.
>     The valid values for 'GPU2DClockFreqs' are in the ranges 90 - 720, 180 -
>     1100 (inclusive).
>     'GPU2DClockFreqs' can use the following target types: X Screen, GPU.
>
>Even though I'm setting the vram speed to 800 with both the 
>nvidia-setting commandline and also in the GUI it doesn't seem to 
>take the vram speed. I've noticed in the GUI nvidia-settings when I 
>set the slider to 800 it goes back to 720 every time when I click 
>apply.
>
>Might this be causing my stutter? And - how do I get it to accept 
>the setting? Thanks.

That rang a bell, someone reported fixing a similar issue with a 
particular HDHomerun channel they were recording. Try underclocking 
the VRAM. This person used GPU=200 VRAM=550.