Comment 15 for bug 633596

chadmerkert's scripts here worked for me to fix most issues with ubuntu 11.04 on the hp tm2t:
http://ubuntuforums.org/showthread.php?t=1716403

Also, when installing and when booting for the first time (before installing the above scripts), I had to set nomodeset (post #52 and #55 in that thread)