Comment 7 for bug 73473

I've tries using other programs such as gedit and the cpu goes to max
too! when inserting text and when scrolling fast.

radeon, 24bit color depth tests, compiz:
Xorg ~ 90%
firefox-bin ~ 20%

radeon, 24bit color depth tests, metacity:
Xorg ~ 70 %
firefox-bin ~ 20%

radeon, 16 bit color depth tests, compiz:
Xorg ~ 60%
firefox-bin~ 20%

radeon, 16 bit color depth tests,normal metacity:
Xorg ~ 53%
firefox-bin ~ 20%

vesa, 16 bit, metacity:
Xorg ~ (as smooth as 32bit with compiz enabled)
firefox-bin ~ 1%

This doesn't seem a compiz bug, even if using compiz the slowness gets
higher and higher!
How can I disable direct rendering in radeon driver to test if the
problem is caused by it?