Same problem: Notebook Compaq NC8430 Ubuntu 12.04 Intel Core2 Duo T7200 3GB RAM Radeon Mobility X1600
Unity 2D works perfectly, unity-3D freezes randomly. I've tried without success: - upgrade kernel to 3.4.9 version; - install lowlatency kernel; - disable the kernel thermal module with "thermal.off=1". May be "thermal.off=1" gave me a little more time before freezing, but I cannot be sure about it. When unity-3d stops working I haven't any message from system, neither in var/log/syslog nor in dmesg. Mouse pointer keeps moving but buttons have not effects. Every tasks is freezed, and I can only press CTRL ALT F1 and use "kill -9 -1" to return on login screen. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/999645 Title: Freeze with unity 3d (12.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/999645/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs