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I have my laptop and the screen is broken on it. I have an external monitor and I want to duplicate the screens so I can see what I am doing, but I can't see the main screen so I can switch that.

Dose anyone have any ideas at all? Thank you in advanced!

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  • What model laptop is it? Some have a dedicated function key for turning on the external monitor and in some cases this works in Ubuntu. Dec 3, 2015 at 2:52
  • Another option. United Airlines broke my daughter's laptop screen. Of course, they wouldn't pay, but I was able to find a replacement for under $70, and found a YouTube video to guide me in installing it. It took under 30 minutes.
    – Marc
    Dec 3, 2015 at 3:52
  • If you connect a second screen, does it work? If so, in what configuration? Dec 3, 2015 at 5:51
  • Welcome to Ask Ubuntu , As there is no command outputs you can provide. Could you edit the question and add more details as you could: brand&model of the laptop, graphic card, driver used for graphic card?
    – user.dz
    Dec 4, 2015 at 11:03

2 Answers 2

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As Thomasrutter mentioned, it depends on the model of laptop. Almost all have dedicated key strokes to duplicate the screens. For Dell laptops here is an easy guide: https://askleo.com/how_do_i_connect_a_monitor_to_my_laptop_and_have_it_work/

If you are on a Mac, I believe the shortcut is "Command + F1"

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You can do this without looking at the screen by going to the terminal (Ctrl+Alt+T) and type in:

sudo apt-get -y install xrandr *wait for 5-10 seconds*
xrandr --output VGA --auto

You can try multiple attempts with different names instead of VGA like VGA1, VGA2, VGA-0, VGA-1,...

Or if you use HDMI, you can try HDMI, HDMI1,...

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