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I have Ubuntu 16.04 running as a guest on Virtualbox 6.0.16. I'm using it with a screen resolution of 1600x917 which is usable but it doesn't utilize my whole screen as my host screen is 1920 x 1080 and it would be great if I could maximize usage of my screen real estate - even when working on the guest (95% of the time). Now, I've got XFCE4 running on my guest but can't launch the display-settings as I get:

$ xfce4-display-settings Segmentation fault (core dumped)

Two things:

  1. How can I fix this

or

  1. How can I modify the screen resolution in another way?
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1 Answer 1

Reset to default
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You can use xrandr in the terminal to change the screen size

xrandr --size 1920x1080
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