I installed OpenSUSE 13.1 in dual boot on my Samsung ATIV Book 6 pre-installed with Windows 8 with a USB key (ultrabook, no DVD reader at the moment).
I tried to install the proprietary driver fglrx following every different procedure indicated in http://en.opensuse.org/SDB:AMD_fglrx but after rebooting, I get a black screen. I therefore tried the 1-click procedure, the yast, the zipper command-line and the script from the german fellow. Concerning the last one, the script failed and stated that my graphic card (Radeon HD 8850M) was not compatible.
Here is the Xorg log when I booted with fglrx installed and without nomodeset option: http://susepaste.org/88126850