Could not resolve host

[pobrn]

1. uninstall video-nvidia-450xx: sudo mhwd -r pci video-nvidia-450xx, then
2. install video-modesetting: sudo mhwd -i pci video-modesetting, then
3. install video-hybrid-intel-nvidia-450xx-prime: sudo mhwd -i pci video-hybrid-intel-nvidia-450xx-prime
4. reboot