[mythtv-users] Mythbuntu 8.10

[Bob Wiegand]

Nick F wrote:
> My experience upgrading Ubuntu 8.04 to 8.10 was relatively painless.  
> The only 'gotcha' I encountered was after upgrading my video performance 
> was terrible (with an integrated nvidia card on the motherboard) - HD 
> playback stuttered really badly even though had been good before.  
> glxgears went from about 2,000 before the upgrade to about 1,200 which 
> was another indication.  It turns out the upgrade had turned on some 
> sort of special graphics effects.  As soon as I turned effects back to 
> 'none' glxgears improved, and HD performance was restored.
> 
> So in case anyone else encounters this - try turning off all effects 
> before meddling with video playback profiles in myth.

You should check which driver Xorg is using.

8.10 currently doesn't have drivers from Nvidia for many old graphics
cards. They will only work with the open source "nv" driver.
That may explain your performance drop.

See:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-96/+bug/251107/

Bob