Fatal error during gpu init

After successfully installing kali 1.0.8 i recieve and booting i recieve the fatal gpu error (radeon) however after connecting my hdmi cable to the motherboard directly ( intel hd 4000) it boots up fine and works perfectly but i just cant stand the display its horrible i also get a slow download speed when using the apt-get update commands and its variants, i have downloaded this driver from the amd website http://support.amd.com/en-us/downloa...alyst-packages but im not sure it detects the card since it wasnt being used in the first place and it says something about additional tools as well but i honestly dont think installing the propriety driver will make me bypass the inital bootup error.
Radeon R9 290
Intel 4770K
Any help would be appreciated. Thanks in advance.