This is an old question but Hardy just won't agree with me. For some insane reason, I have audio but no video after following this page. As for my system specs, I have compiz working so it can't be my ATI video card (installed through EnvyNG). I also downloaded VLC (from the same page) with hopes that it would help but still nothing. Any good ideas, anyone?
I'm a long time Linux user and I thought I'd give Ubuntu a try coming from Linux Mint.