Can't login livecd KDE4 (11.1) with HD 2400 PRO

I run in my pc (Intel P4 extreme, 23GB ram) openSuse 11.0 dual boot with XP with ATI Radeon HD 2400 PRO AGP (RV610 94C4) and I want test the 11.1 via livecd.
I have livecd 11.1 KDE 4 and i reboot from cd. It seems to be ok but I don’t have X server, just text with a prompt to login

I type “startx” but I have error and the X can’t run.
I try vesa, and all other options but nothing

Is there any way to login?

At the login, login as root
then do:

sax2 -r -m 0=vesa


thank you, now I have X