The following packages have unmet dependencies:
 lubuntu-core : Depends: xserver-xorg-video-intel
 xserver-xorg-input-all-hwe-16.04 : Depends: xserver-xorg-input-evdev-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-input-synaptics-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-input-wacom-hwe-16.04 but it is not going to be installed
 xserver-xorg-video-all-hwe-16.04 : Depends: xserver-xorg-video-amdgpu-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-video-ati-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-video-fbdev-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-video-nouveau-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-video-vesa-hwe-16.04 but it is not going to be installed
                                    Depends: xserver-xorg-video-vmware-hwe-16.04 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.