For some reason i need to use only second screen. I have attached laptop with LCD monitor but now both screens are on while i just need one, I cant figure it out i have looked for it but didn't find a thing about it. Help !
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8
Go to System Settings → Hardware → Displays (as in next image), select your laptop screen and turn it off:

BeastOfCaerbannog
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Radu Rădeanu
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Try pressing Super+P, which will open the below 4 options. While holding down Super, select the 3rd option using arrow keys.
- Mirror
- Join Displays
- External Display only
- Built-in Display

BeastOfCaerbannog
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