amdgpu setup

ubuntu 16.04.4
amdgpu-pro 17.40-492261

before install amdgpu-pro
UEFI:
peg0 -> gen2
peg1 -> gen2
pci latency time -> 96
above 4G memory -> disable
hd audio controller -> disable
intel serial i/o -> disable
legacy usb support -> enable
fastboot -> disable
boot mode -> legacy + uefi
comm port -> disable
LPT port -> disable

install amdgpu-pro
$> sudo update-pciids

reboot

UEFI:
above 4G memory -> enable