Installed ATI fglrx driver after first reboot

Install fglrx from ATI repository via YaST...

ati-fglrxG01-kmp-default-8.36.5_2.6.18.8_0.3-1.1.i586.rpm
x11-video-fglrxG01-8.36.5-4.1.i586.rpm

Ran SaX2 config from Graphics Card & Monitor shortcut in Control Center. Screen blanked out to Ctrl-Alt-F1 login prompt for a while, had me worried but then it switched back eventually.

Test screen seemed fine, time for another reboot.

PS: Autologin worked well when you tick Passwordless login in Control Center > User Management > Expert Options > Login Settings.