Comment # 208
on bug 91880
from emilio.moretti@gmail.com
(In reply to emilio.moretti from comment #207) > (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. oh, sorry. There is a "typo" in my previous answer. For the unstable system you need to remove amdgpu from the blacklisted modules. Let me "correct" the unstable system configuration: 1) Make sure amdgpu can be loaded: # vim /etc/modprobe.d/blacklist.conf -> REMOVE "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
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