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mipo

Member

Registered: 2020-11-20

Posts: 12

[SOLVED] Radeon HD 6850 amdgpu module priority

For some reason my system keeps loading radeon driver on Radeon HD 6850 despite:

cat mkinitcpio.conf | grep amd

MODULES=(amdgpu radeon ahci)

grub.cfg

linux	/boot/vmlinuz-linux-lts root=UUID=d18f0d5e-6200-43ae-b2b1-ae8c0f2bfc8c rw iommu=pt loglevel=3 radeon.si_support=0 amdgpu.si_support=1 radeon.cik_support=0 amdgpu.cik_support=1 quiet

cat radeon.conf amdgpu.conf

options radeon si_support=0
options radeon cik_support=0

 
options amdgpu si_support=1
options amdgpu cik_support=1

Any ideas on what am I doing wrong? Does this videocard even support amdgpu?

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Barts PRO [Radeon HD 6850]
	Subsystem: ASUSTeK Computer Inc. EAH6850 [Radeon HD 6850]
	Kernel driver in use: radeon
	Kernel modules: radeon

Last edited by mipo (2021-11-13 16:15:47)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,223

Re: [SOLVED] Radeon HD 6850 amdgpu module priority

There's no need to combine every method of setting this, you can just use one.

But your card is too old, you can only do that for actual GCN architecture cards, which is a select few of 7xxx and newer 6xxx is too old., yours is Nothern Island not SI, so you're out of luck I'm afraid

Last edited by V1del (2021-11-13 16:07:16)

mipo

Member

Registered: 2020-11-20

Posts: 12

Re: [SOLVED] Radeon HD 6850 amdgpu module priority

But your card is too old, you can only do that for actual GCN architecture cards, which is a select few of 7xxx and newer 6xxx is too old., yours is Nothern Island not SI, so you're out of luck I'm afraid

Ah I see. I was afraid it's just too old but yeah... Is there any list of which videocards are GCN architecture and supportd by Vulkan/AMDGPU? If you'd give where it can be looked at I'd be really thankful!

Marking this thread as solved.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,223

Re: [SOLVED] Radeon HD 6850 amdgpu module priority

https://en.wikipedia.org/wiki/Radeon_HD … ure_Matrix and the table above for the distinction between Terascale/GCN.

In terms of "numbers" it seems things above HD 77xx start to be GCN. And the number "reset" all of the RX ones that come afterwards

mipo

Member

Registered: 2020-11-20

Posts: 12

Re: [SOLVED] Radeon HD 6850 amdgpu module priority

https://en.wikipedia.org/wiki/Radeon_HD … ure_Matrix and the table above for the distinction between Terascale/GCN.

In terms of "numbers" it seems things above HD 77xx start to be GCN. And the number "reset" all of the RX ones that come afterwards

Thanks for the information and help! I really appreciate it. And sorry if the question was obvious, I'm just not too well aware about GPUs.