de-minimizing applications is very slow using the default non-free ati drivers

[De Cowboy]

Binary package hint: compiz

I'm not sure if this is a compiz or ati driver problem; however, it didn't happen before. It's perfectly predictable and reproducable: minimize window, click in task bar to reopen it. Then you have to wait 1-2 secs before the window gets back. Even with animations disabled, this still happens. Using metacity there is no wait at all.

I believe I found a topic about this on the ubuntu forums, containing complaints not only from ati users but also from nvidia users.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
MachineType: System manufacturer System Product Name
NonfreeKernelModules: fglrx
Package: compiz 1:0.8.2-0ubuntu7
PackageArchitecture: all
ProcCmdLine: root=UUID=e1491e98-7977-407b-b3c2-a15a0b1789bc ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.28-11.41-generic
SourcePackage: compiz