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Overview X RandR is used to configure which display ports are enabled (e.g. LCD, VGA and DVI), and to configure display modes and properties such as orientation, reflection and DPI. This is the simplest and most powerful way to get multi-monitor systems working using recent versions of Linux such as Ubuntu 7.10 and Fedora 8 with graphics chipsets such as the Intel 945GM/GMS and ATI Radeon found in Thinkpads. xrandr is the command line interface to the RandR X extension.