I have followed all of the instructions of comment #2. One of the tags with the kernel number 3.11rc6 didn't add.
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1043541 Title: radeon 0000:00:01.0: couldn't schedule ib Status in “linux” package in Ubuntu: Confirmed Bug description: when attempting to boot up, the computer will randomly fail to boot, and then later will have error messages in kern.log [drm:radeon_cs_ib_chunk] *ERROR* Failed to schedule IB ! and radeon 0000:00:01.0: couldn't schedule ib To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1043541/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp