I don't have the time neither the ability to produce an helpful backtrace, however I can confirm that disabling the "Desktop Effects (compositing right?)" solves the issue for me. I was working without it for quite a lot now, but after kde 4.2 went to the backports I wished to try it with the effects... Result: (almost) immediate lock. I disabled it again and everything works good again. I certainly can't speak technically, but it has something to do with effects for sure.
This bug, at least for ati users with open source driver, wipes out most of the benefits of the new kde... Really hope is solved for Jaunty... Don't give up ;-) -- [X1650 Pro] Xorg lockup when using xserver-xorg-video-ati 1:6.9.0+git20080826.a3cc1d7a-2ubuntu3 https://bugs.launchpad.net/bugs/276518 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs