ERROR: […/src/amd/vulkan/radv_physical_device.c:1877] Code 0 : Device ‘/dev/dri/renderD128’ is not using the AMDGPU kernel driver
This is the smoking gun, btw.
I see you’ve got it working, so I’ll just add a bit of explanation.
AMD GPUs used to use a driver called radeon. It was replaced with the current amdgpu driver. For a while, you had devices that were supported by both drivers and you could choose between the stable radeon driver that was missing features like Vulkan and HDMI audio or the brand new amdgpu driver that had the newest features but was unstable and not well tested.
The kernel has a policy of not unnecessarily breaking things with kernel changes so even though amdgpu has been well tested in the years since, devices from that era still default to the radeon driver and need to be forced onto the amdgpu driver.