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Choppy playback with new Nvidia drivers
http://forums.linhes.org/viewtopic.php?f=17&t=7851		 Page 1 of 1
Author:  trycoon [ Thu Jan 12, 2006 4:45 pm ]
Post subject:  Choppy playback with new Nvidia drivers
Last evening i upgraded from kernel 2.6.12.3 to the latest 2.6.15, upgraded Nvidia drivers from 7667 to 8178, and made several modifications to my MythTV settings. When i at last sat down to watch TV i discovered that the Live TV and even recorded shows was VERY choppy. How ever watching movies was still OK.. Running TOP revealed that the mythfrontend process consumed 95% CPU, normaly i get 16%! I tried to go back to my old Myth-settings and kernel but without any result. Finaly i downgraded my Nvidia drivers to my old ones, and it worked! I have remade the changes to my Myth-settings and have installed kernel 2.6.15 but with the old Nvidia driver and it still works great. Strange, but i thought you should know.
Xine and Mplayer didn't get affected, i also run the latest Nvidia drivers on my workstation without any problems..
Author:  aelinuxguy [ Mon Mar 06, 2006 6:31 pm ]
Post subject: 
Wow - that is wierd. I just got an NVIDIA MX440 installed today and was having all kinds of problems with it on the newest driver. Downgrading did the trick. Thanks for your post; I would have not thought to try a downgrade.
Author:  misterflibble [ Mon Mar 06, 2006 10:10 pm ]
Post subject: 
The problem is most likely having the OpenGL Vsync setting enabled in your tv playback settings. This is a known problem with the 8xxx series drivers. Disabling this setting should put CPU usage down to normal levels.
Author:  cesman [ Mon Mar 06, 2006 10:15 pm ]
Post subject: 
misterflibble, glad to see I'm not the only one to read the Release Notes. :D
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