I was experiencing a similar one after upgrading to 11.10 - garbage on the screen, and "*ERROR* radeon: couldn't schedule IB" flooding in dmesg.
Luckily, installing the latest kernel from http://kernel.ubuntu.com /~kernel-ppa/mainline/ solved the issue for me (I've used 3.1.0-rc9). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/586243 Title: Xorg freeze: "Failed to schedule IB" Radeon X1200 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/586243/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
