ATI / grlrx / Catalyst + gnome-shell = problems

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http://askubuntu.com – Not duplicate to this nor this nor this one Hello There is a known bug with ATI driver (fglrx) and gnome-shell, I know. Just wondering why I can play 3D games with high graphic features using same driver (version 11.11)? also there is no problem with graphical effects of KDE and other programs using graphical environment, but there is problem with very simple effects of gnome-shell?. What is special with gnome-shell? Note: There are some success stories around... Nothing worked for me. I tried removing fglrx, installing the 11.11 driver downloaded from AMD, disabling tear effect in (HowTos)