2017年10月2日 星期一

[Linux 常見問題] Using XrandR to control video projector

Source From Here
Preface
This is the 2nd part of my entry of xrandr. I have written a previous entry Using xrandr to change screen resolution and orientation
This blog entry essentially is to how how we can control monitor and projector.

Note 1: Firstly do a query on the connected port (ie projector)
# xrandr --query // You should be able to get your graphics output status whether it is VGA, HDMI etc

Note 2: Setting the best resolution for the connected port (ie projector)
# xrandr --output VGA --auto

Note 3: Cloning mode for both internal monitor (DVI) and external projector (VGA)
# xrandr --output VGA --mode 1024x768 --same-as DVI --output DVI --mode 1024x768

Note 4: Switching Off the Video Projector and turn off the Internal Monitor
# xrandr --output VGA --off
# xrandr --output DVI --auto

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