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amdgpu_device_initialize: amdgpu_query_info(ACCEL_WORKING) failed (-13)
amdgpu: amdgpu_device_initialize failed.
do_winsys_init: DRM version is 3.27.0 but this driver is only compatible with 2.12.0 (kernel 3.2) or later.

failed to set mode: Permission denied

(2 edits)

Do you use radeon driver? I found that amdgpu driver could be used to prevent this issue. https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1696231

I use the open source AMDGPU driver on Arch linux.

And radeon is not loaded?