It appears the problem is that you have partially/unsuccessfully/manually installed the Nvidia graphics driver but it's no longer installed and it has left the 'nomodeset' flag in your kernel command line:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-24-generic root=UUID =47ee8f4e-ddca-4b1f-beeb-159611ec343b ro nomodeset which will prevent the default 'nouveau' graphics driver from working properly. To fix this you should edit your /etc/default/grub and remove 'nomodeset'. Then run 'sudo update-initramfs' and reboot. That will allow the nouveau driver to work properly. If that doesn't fully solve the problem then you can later also try the official nvidia driver by running: sudo apt install nvidia-driver-390 ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (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/1781125 Title: Display drivers are not Avaialble To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1781125/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs