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Replace radeon with amdgpu [closed]

asked 2017-08-21 07:37:08 -0600

xtronom gravatar image


How do I configure Fedora 26 to use the amdgpu driver instead of the radeon driver?


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Closed for the following reason question is not relevant or outdated by xtronom
close date 2017-08-21 12:18:53.474219

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answered 2017-08-21 10:58:49 -0600

ozeszty gravatar image

It depends on your GPU (only GCN supports it, GCN 1.0 and 1.1 additionally require kernel boot parameters) and whether you want to use audio over HDMI or FreeSync (you'll need kernel with not yet mainlined patches). Read/use this

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GCN is exactly why I need it. Radeon driver doesn't work well with newer cards/APUs.

xtronom gravatar imagextronom ( 2017-08-21 11:17:24 -0600 )edit

No, I was confused, sorry. The card is not GCN, that's why radeon is loaded instead of amdgpu. I saw an error in dmesg and poor performance which I don't see on another distro under same kernel version, and I automatically assumed it was the driver.

xtronom gravatar imagextronom ( 2017-08-21 12:17:54 -0600 )edit

Have my answer provided you with information you were seeking?

ozeszty gravatar imageozeszty ( 2017-08-21 12:35:00 -0600 )edit

radeon is still the default kernel driver also for GCN GPUs, probably until AMD mainlines patches I mentioned before. If you're 100% sure that your GPU is pre-GCN, than indeed you can't use amdgpu.

Performance might differ due to e.g. different mesa version.

ozeszty gravatar imageozeszty ( 2017-08-21 14:45:33 -0600 )edit

Sorry, I cannot validate your answer because I don't have the appropriate HW. But actually I only wanted to activate the driver which ships with fedora kernel and mesa.

xtronom gravatar imagextronom ( 2017-08-24 05:29:20 -0600 )edit

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Asked: 2017-08-21 07:37:08 -0600

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Last updated: Aug 21 '17