It appears "UNCLAIMED" in lshw is somewhat common. So I wouldn't take that to be evidence of a problem although it is suspicious.
What is evidence of a real problem is the Xorg log shows software rendering is in use: [ 3.872] (II) FBDEV(0): hardware: EFI VGA (video memory: 8100kB) and the correct hardware device node is missing: [ 3.872] (EE) open /dev/dri/card0: No such file or directory This makes me think the kernel version is slightly too old for your GPU. Please try booting Ubuntu 20.10 or 20.04.1: https://ubuntu.com/download/desktop ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Summary changed: - Display + HDMI not working properly. I suspect the automatically installed driver. + FBDEV in use with amdgpu and there is no /dev/dri/card0 ** Summary changed: - FBDEV in use with amdgpu and there is no /dev/dri/card0 + FBDEV in use with amdgpu and there is no /dev/dri/card0 (hardware is AMD/ATI Renoir [1002:1636]) ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags added: amdgpu -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1906601 Title: FBDEV in use with amdgpu and there is no /dev/dri/card0 (hardware is AMD/ATI Renoir [1002:1636]) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906601/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
