Yur amdgpu is a render offload target, and does not have outputs as you said.
In order to use it for offloading, you need to run an app with 'DRI_PRIME=1 app'. There is no better support for that in the desktop environment to control it, so it needs to be done manually like that.. ** Changed in: xserver-xorg-video-amdgpu (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649060 Title: amdgpu does not find any output when using dedicated (AMD) card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1649060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs