Comment 237 for bug 121653

359: I'm not an expert, but you need to install the 2.6.24 kernel, plus the modules, plus the kernel headers and the compilers to enable you to make the ATI install packages. You'll need to install them, then boot into the new kernel, and then make and install the new ATI driver. For me, that initial boot into the new kernel seemed to have mis-matched driver/xorg stuff that resulted in a broken GUI too, so expect to need to do that in a virtual console (or at least, that's what I had to do). I'm still feeling my way as to what else I might need to upgrade at the moment.

Clayton: I can't remember exactly, but I have a strong suspicion it was as simple as System -> Preferences -> Desktop Effects, and ticking the appropriate box.

BTW, I've also run across this problem that FrancoisBotman reported, so the drivers are still a work in progress, but at least they're working better than they ever have (for me!) before:

[quote]
* With compiz enabled, after a certain length of time (it seems to occur most with a terminal open), the window painting becomes desynced compared to the actual window position (that is, when you try to move a window, you realize it is actually about 300px to the left), and moving the window leaves traces on the windows behind. This may be a compiz problem, but I had never experienced it before using the newer driver.
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