I can confirm it, too. My system is i686 and I upgraded today from dapper. For me the apt-get install xserver-xorg-video-all didn't help...
Perhaps the fglrx driver which was previously installed did something? I don't know. :( -- xserver-xorg-video-* did not get installed during upgrade from dapper https://launchpad.net/bugs/63097 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
