The same behaviour is observed on my iMac system when I boot archlinux (kernel 3.4.4) on another partition.
In that case I needed to set 'radeon mode=0' in the modules.conf file to allow me to see anything on the main screen, even text. The default setting was mode=1.
The same behaviour is observed on my iMac system when I boot archlinux (kernel 3.4.4) on another partition.
In that case I needed to set 'radeon mode=0' in the modules.conf file to allow me to see anything on the main screen, even text. The default setting was mode=1.