hd 4870 and 3d acceleration and youtube

Asked by Ledneczky Márton

Hallo!
I have an hd ati 4870, and i want to watch for example youtube hd (1080p) videos on fullscreen. At this moment I can't watch these kind of videos, because it plays hd video not fluently.
The next of my issues is 3d acceleration, I've downloaded a latest driver from amd.com, and compiz effects, and other 3d animations are not also fluently. I can't understand, why because i think i 4870 has enough power, and by the way i have a trial core x3 720 amd processor.
I hope you will give my issue imediate attention.
Thanks

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Ubuntu xserver-xorg-video-ati Edit question
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Federico Tello Gentile (federicotg) said :
#1

The AMD driver is a really bad choice. The default Ubuntu driver has better 2D and video acceleration. 3D is faster with the AMD driver, but AFAIK kernel modesetting does not work with it, so you will have better results overall with the default driver.

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