AMDGPU Kernel Driver Is Working Out Well On Linux 5.0

[gedgon]

With a single 4K 60Hz monitor there is no bug.

I can confirm fixed SCLK clock on a RX 560 with a singe 4K @60Hz monitor without amdgpu.ppfeaturemask=0xffffffff kernel parameter.

[MasterCATZ]

I have R9 290's but can not get amdgpu to run with kernel 5.0 on Ubuntu 18.04 for me just keeps using radeon and if I black list I get nothing

glxinfo | grep "OpenGL version"
OpenGL version string: 3.0 Mesa 19.1.0-devel (git-9c46046 2019-04-07 bionic-oibaf-ppa)

lspci -k | grep -EA3 'VGA|3D|Display'
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii PRO [Radeon R9 290/390]
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii PRO [Radeon R9 290/390]
Kernel modules: radeon, amdgpu


when I hit 4.19 radeon and amdgpu stopped working
lspci -nnk | grep -i vga -A3 | grep 'in use'
Kernel driver in use: i915


I can roll back to kernels 4.17 ~ 4.18 and it works ?

GRUB_CMDLINE_LINUX_DEFAULT="radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 amdgpu.dc=1 amdgpu.dpm=1"


lspci -nnk | grep -i vga -A3 | grep 'in use'
Kernel driver in use: i915
Kernel driver in use: amdgpu