From the error messages, the problem seems to be with reading /usr/share/libdrm/amdgpu.ids, rather than loading the driver itself. What are the permissions on that file? Is an apparmor profile enforced for firefox?
From the error messages, the problem seems to be with reading /usr/share/ libdrm/ amdgpu. ids, rather than loading the driver itself. What are the permissions on that file? Is an apparmor profile enforced for firefox?