Reassigning to Mesa. From your bug description you have pointed out that fglrx failed to build so you're not using it. The real issue then is that the Mesa radeon driver is not performing.
** Package changed: fglrx (Ubuntu) => mesa (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1550910 Title: fglrx renders extremely slow in latest kernels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1550910/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

