I have the same problem as Osmo Laitinen with the same platform. Dell Latitude C610 laptop with Radeon Mobility M6 LY [Radeon Mobility 9000].
Ubuntu Dapper freezing randomly, and the only way to escape is to take out the battery and power off. I never had these problems in Breezy, which I used all the time on this laptop. Windows also doesn't have this problem, so it can't be hardware. There is no information in the /var/log files either. It is really frustrating, and makes the whole experience unusable as I keep losing work. I'll try to turn off some of the ati features as suggested here or use the vesa driver. -- system freeze when using ati radeon 7000 with xorg "ati" driver https://launchpad.net/bugs/16873 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
