Home / ubuntu / Questions / 674367
Accepted
Timur Fayzrakhmanov
Asked: 2015-09-16 02:23:41 +0800 CST

How to see what is on external monitor using built-in screen?

  • 772

I have a laptop connected to external monitor. Everything ok, but sometimes I need to check what's going on on external monitor (because I can't see them), hence two monitor should display the same output for a while. Are there any ways to do so?

14.04

2 Answers

  1. Best Answer

    Easy and simple, you can take a screenshot using print screen key. It shows both screens.

    • 2

  2. A simple solution if you are using X11 is to take a snapshot of the second display. For example, using xwd and assuming the monitor is display screen 0.1, 

    xwd -root -display :0.1 | xwud -in /dev/stdin

    should show the current screen in a window.

    An alternative is to use x11vnc and xvncviewer.

    • 1