Comment # 207
on bug 91880
from emilio.moretti@gmail.com
(In reply to Sandeep from comment #206) > You've got to make sure that radeon and amdgpu drivers don't clash. > > Try the following kernel parameters: radeon.si_support=0 > radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 amdgpu.dpm=1 > > That's what I use and it works fine for me. Thanks, but I did that. Here is my process: Stable system configuration (power management doesn't crash): 1) Make sure amdgpu is blacklisted: # vim /etc/modprobe.d/blacklist.conf -> add "blacklist amdgpu" at the bottom # update-initramfs -u -k all 2) Update grub parameters: # vim /etc/default/grub -> Set the correct defaults: GRUB_CMDLINE_LINUX_DEFAULT="radeon.cik_support=1 amdgpu.cik_support=0" # update-grub 3) reboot the system Unstable system configuration (power management crashes the entire system when it tries to power off the monitors): 1) Make sure amdgpu can be loaded: # vim /etc/modprobe.d/blacklist.conf -> add "blacklist amdgpu" at the bottom # update-initramfs -u -k all 2) Update grub parameters: # vim /etc/default/grub -> Set the correct defaults: GRUB_CMDLINE_LINUX_DEFAULT="radeon.cik_support=0 amdgpu.cik_support=1 amdgpu.modeset=1 amdgpu.dc=1 amdgpu.dpm=1" # update-grub 3) reboot the system It's a fairly easy way to test it as is freezes every time you leave the PC idle. I haven't seen it crash during my daily usage, but it does crash when the power management kicks in.
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