Ubuntu Reference

Display is not showing due to driver conflict
sudo apt-get remove --purge nvidia-*
sudo rm /etc/X11/xorg.conf
Reinstall VLC
sudo apt-get remove --purge vlc
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get install vlc
Give write access to Readonly filessystem
sudo mount -o remount,rw /
Shutdown and restart
sudo shutdown now
sudo restart now
Update packages
sudo apt-get update
Upgrade distro
sudo do-release-upgrade