The update to hal 0.5.8.1-4ubuntu6 worked for me. The problems that remains is about the brightness popup,what Michael have, and the brightness applet, "LCD brightness : 0%"
-- [Feisty] Thinkpad (all models) LCD brightness control cycles between lowest settings only https://launchpad.net/bugs/81407 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs