Moved to amdgpu. The problem appears to be a conflict between amdgpu and radeon, both of which were installed automatically on a fresh Xubuntu 18.04 install.
** Package changed: xorg (Ubuntu) => xserver-xorg-video-amdgpu (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780237 Title: Screen switches off after successful lightdm login from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1780237/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
