Yes, okay, I already using radeonhd rite now. Actually that is the only worked for me.
sax2 -r -m 0=radeon gave me a blank screen after entered.
sax2 -r -m 0=radeonhd is successful.
But the problem is now I still can't enable desktop effect. It says that Desktop Effects are not supported on your current hardware / configuration. Since I just upgraded from 11.1, I believe this is the driver / configuration issue.
I already added these line too in xorg.conf:
Option "Composite" "Enable"
And while this module xorg-x11-driver-video-radeonhd - Driver for AMD GPG (ATI) r5xx/r6xx Chipsets already installed in Yast, why do I can't see any radeon drivers in lsmod ?
Here is the result of my lspci | grep "ATI"
01:00.0 VGA compatible controller: ATI Technologies Inc RV530 [Radeon X1600]
My uname -a
Linux graypc 22.214.171.124-0.1-default #1 SMP 2009-10-26 15:49:03 +0100 x86_64 x86_64 x86_64 GNU/Linux