The top after the second crash case where you can see that X/kwin/plasma just freezed. Still no error messages anywhere.
** Attachment added: "top -bcn 1" http://launchpadlibrarian.net/27580845/radeon_x1950xtx_top_after_crash.txt -- Hard system lock in KDE4 with effects enabled https://bugs.launchpad.net/bugs/384275 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