Solution (for me): see https://bugs.freedesktop.org/show_bug.cgi?id=70388
boot the kernel with vram_pushbuf=1
if that does not work, try agpmode=0
Solution (for me): see https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 70388
boot the kernel with vram_pushbuf=1
if that does not work, try agpmode=0