Comment 153 for bug 626974

@luk1don,

I was tried different vga modes in /etc/default/grub, but still got error.

dmesg wrote:
[ 99.118023] agpgart-intel 0000:00:00.0: AGP 3.0 bridge
[ 99.118052] agpgart-intel 0000:00:00.0: bridge is in legacy mode, falling back to 2.x
[ 99.118065] agpgart-intel 0000:00:00.0: putting AGP V2 device into 4x mode
[ 99.118119] nvidia 0000:01:00.0: putting AGP V2 device into 4x mode
[ 100.654542] Xorg:1844 conflicting memory types e8000000-e8500000 uncached-minus<->write-combining
[ 100.654552] reserve_memtype failed 0xe8000000-0xe8500000, track write-combining, req write-combining
[ 100.656966] Xorg:1844 conflicting memory types e8000000-e8500000 uncached-minus<->write-combining
[ 100.656975] reserve_memtype failed 0xe8000000-0xe8500000, track write-combining, req write-combining

in Xorg.0.log:

[ 88.122] (EE) NVIDIA(0): Failed to allocate/map the primary surface!
[ 88.123]
Fatal server error:
[ 88.123] AddScreen/ScreenInit failed for driver 0

Please, any idea, how can I fix it?