Asus Z87-C and ATI 6970

[stehor]

try boot flag dart=0 plus the sleep trick for amd card with the power button

 

[milanvrbka]

I have just ran across something called SecureBoot, in my bios. It is greyed out, and enabled. Read into it a little bit, this could be the cause? I can't disable it

 

[shaggymane]

I have a m5a99x evo and a xfx 6970hd amd video card and I get the same white screen in Mavericks.

all AMD products

I have tried alotta things to get it working but no luck yet.

 

[shaggymane]

ALSO, I swapped the 6970 for a 4870 and BINGO the 4870 works ... still 6970 doesn't work.

 

[Raboebie]

i dont know what is wrong vd-t is disabled and virtualization is enabled.. still white screen

Boot in safe mode, replace this kext with kext wizard. Repair permissions, reboot. Boot without -x and profit from full QE/CI on the 6970

Kext attached. This works up until 10.9.1 as far as I know. 10.9.2 or greater might break support but I haven't tested this yet.