I've tested 3.17-rc3 and the problem persist. For now I'll be working with 3.13 until it's fixed.
** Tags added: kernel-bug-exists-upstream kernel-bug-exists- upstream-3.17 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1364629 Title: Desktop environment particularly slow while using radeon driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1364629/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs