So I just solved this issue by installing "ATI binary X.Org driver" from Ubuntu Software Centre (for some reason drivers weren't showing up in the normal System > Administration > Hardware Drivers.
However I no longer have any desktop effects but I don't really care. Note that even before I installed this driver, disabling desktop effects did not fix the problem. I guess this means that the problem is something to do with the default radeon driver (I have a radeon x800) and/or some special way in which thunderbird displays. -- Xorg eats processor cycles while waiting for slow Internet https://bugs.launchpad.net/bugs/297143 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
