Install the necessary packages
pacman -S xf86-video-amdgpu mesa- mesa is the DRI driver for 3D hardware acceleration.
- xf86-video-amdgpu is the DDX driver for 2D hardware acceleration used in Xorg.
Add module to Mkinitcpio
After installation enable the modules in configuration of Mkinitcpio. Open for this
/etc/modprobe.d/modprobe.conf
Add the amdgpu driver in modules variable:
MODULES=(amdgpu)
Build now your kernels
mkinitcpio -PSet the kernel parameter for SI/CIK Graphicscard support.
Open your grub file/etc/default/grub
radeon.cik_support=0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1
In addition, you can enable overclocking features with:
amdgpu.ppfeaturemask=0xfffd7ffforamdgpu.ppfeaturemask=0xffffffffdepending on the card.
Save the changes andupdate-grub.