Third Party Hardware > GPU Compute / Accelerators
Blackbird Radeon RX580
MauryG5:
Hi Sharkcz, so you too have noticed that changes have been made starting from version 5.14 onwards, which have affected the functioning of AMD GPUs. Is it possible to hope for a correction in good times of this problem in the Linux Kernel by the Kernel team? I had written about the problem, already at the beginning of version 5.14 and therefore I tried to make everyone aware of this problem but at the time, unfortunately few followed me ...
ClassicHasClass:
--- Quote from: MauryG5 on November 09, 2021, 12:43:31 am ---I mainly use Ubuntu 20.04.3 with Xorg and the problem is the same, so I don't think it affects the graphics server. They changed some damn parameters on the new Kernels and now we have problems and what's worse they still haven't solved it ...! Classic sorry for Kernel options you mean when configuring the parameters? Is there this option that you say must be set to 0? Let me get it right ...
--- End quote ---
Yes, you want to change the kernel command line that Petitboot uses (which, unless you're doing something really strange, should be the same as Grub's). You don't need to rebuild the kernel for that option.
mcarden:
@MPC7500, we have a winner!
--- Code: ---sudo grubby --update-kernel=ALL --args="modprobe.blacklist=ast"
--- End code ---
...achieved the desired result.
Thanks!
MauryG5:
Ok Classic, I just have to understand the exact procedure to do it too. I remember well that when we first made these Navi work, for example, we changed a line in the petit Boot. After loading, go to the command line and type this command: # nvram -p ibm, skiboot --update-config fast-reset = 0 # nvram -p ibm, skiboot --print-config "ibm, skiboot" Partition
Now this has always been set on my motherboard, what else needs to be done, how exactly do you proceed from Petit Boot and which command should you enter? Thanks
sharkcz:
grub is using the GRUB_CMDLINE_LINUX variable defined in /etc/grub/default to set the default value of the kernel parameters for the host Linux
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