I am using the nouveau driver on the geforce gt 210, and I followed the steps at nouveau.freedesktop.org of extracting the firmware from the nvidia binary driver to enable video acceleration. After that vainfo and vdpauinfo returns a list of codecs and apparently does not report any errors. But when I try to watch some video in vlc with vaapi or any other player, a bunch of green artifacts appear on the video and the system freezes making me have to pull the computer from the outlet in order to shut down. And using vlc with vdpau the video runs for a while but the screen starts to stutter and the system freezes too. Can someone please help?