Xrandr command to solve Ubuntu projector problems

The Xrandr command line makes it easy to switch between two screens, often in the following ways:

Ubuntu command

Xrandr--output VGA--same-as LVDS--auto

Turn on the external monitor (highest resolution) and display the same content as the laptop LCD screen (clone)

Ubuntu command

Xrandr--output VGA--same-as LVDS--mode 1024x768

Turn on the external monitor (1024x768 resolution) to display the same content as the laptop LCD screen (clone)

Ubuntu command

Xrandr--output VGA--right-of LVDS--auto

Open External monitor (highest resolution), set to right extension screen

Ubuntu command

Xrandr--output VGA--off

Turn off the external monitor

Ubuntu command

Xrandr--output VGA--auto--output LVDS--off

Turn on the external monitor and turn off the laptop LCD screen (only works with an external monitor)

Ubuntu command

Xrandr--output VGA--off--output LVDS--auto

Turn off the external monitor while turning on the laptop LCD screen (only with the laptop LCD screen)

(in the last two cases, please be careful not to accidentally turn off all two screens ...)

In addition to using commands, the "screen resolution" software available in GNOME is very powerful (screen resolution, preferences--system--), the way to turn the second monitor on and off is to adjust its resolution, cancel "clone" can be set to expand the screen, You can also adjust the relative position of two screens when you drag the icon position.

Ubuntu VGA output How to switch to projector Randr

※051012 Update
Fromthe installation of Nvidia driver does not use the Xrandr problem
This news is not hyo to help:
* NVIDIA 302.07 Beta -linuxtoy (2012.05.04)
Http://linuxtoy.org/archives/nvidia-302-07-beta.html

NVIDIA released the 302.07 Beta version of the closed source binary graphics driver and finally introduced RandR 1.2/1.3 Support。 Highlights of this release:

• Significantly modified multi-monitor support of the relevant configuration tools, configuration files, increased RandR 1.2/1.3 support .
• vertical synchronization is enabled by default .
• Improves rendering speed for render bitmap files.

Three years, NVIDIA finally for its long display to achieve the RandR 1.2/1.3 support, keep up with the pace of Intel/amd/catalyst/nouveau. This will mean that the Nvidia closed source graphics driver will be able to use the GNOME/KDE multi-display management with better experience and functionality, without having to dwell on the multi-display settings in the semi-mutilated NVIDIA control Panel.
Full Changelog 32-bit version download 64-bit version download

RELATED Links: http://imtx.me/archives/1695.html

http://www.startos.com/ubuntu/tips/201010146907.html

Xrandr command to solve Ubuntu projector problems