Q: How can I reconfigure Xorg windows system in Ubuntu? I played with its configuration and broke it!

A: First recommendation is to always save a copy of /etc/X11/xorg.conf before editing it. Once you decide you would like system to create new xorg.conf type one of these  commands and follow instructions at the screen:

dpkg-reconfigure xserver-xorg


sudo dpkg-reconfigure xserver-xorg

In most cases it helps.

Update: for automatic configuration (autodetect) you should use the following:

sudo dpkg-reconfigure -phigh xserver-xorg




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