Xorg

How to Restart X Server in Ubuntu 12.04 Without Rebooting

Three reliable methods to restart the X server in Ubuntu 12.04 Precise Pangolin — LightDM service restart, TTY console switching, and killing the X process — with guidance on when each is appropriate.

How to Enable Ctrl+Alt+Backspace to Kill X Server on Ubuntu 11.10

Three methods to re-enable the Ctrl+Alt+Backspace shortcut for killing the X server on Ubuntu 11.10 Oneiric Ocelot, with explanations of when and why you'd need it.