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I was wondering how I could create a dummy or fake monitor that I could use to extend my display. Then I wanted to use vnc to connect to the dummy screen with my other laptop. If someone has something easier or better please suggest it. I'm using normal unity Ubuntu 16.10 on both. It's been done on windows as see here. - https://youtu.be/W9gAlqCX5Lw

I've also tried xdmx but it didn't work for me. It would give me a "(Fatal Error) dmx: InitOutput: no back-end displays found" error after I ran xdmx :1

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  • It can't be done would be my hypotheses.
    – user589808
    Commented Jan 28, 2017 at 16:35
  • why? It's been done with windows.
    – CamFig
    Commented Jan 28, 2017 at 16:36
  • Interesting. How is it done with Windows? Can you please point to a link?
    – user589808
    Commented Jan 28, 2017 at 16:39
  • youtu.be/W9gAlqCX5Lw It's from 2015 and the guy used fedora to vnc into the windows pc.
    – CamFig
    Commented Jan 28, 2017 at 16:42
  • I suggest you edit and add that to your question. And wait for answers.
    – user589808
    Commented Jan 28, 2017 at 16:52

1 Answer 1

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Check the laptop manufacturer information online. Most laptops only have their video card sources (HDMI, DVI, VGA, etc.) set to output only, but that is not always the case.

For the case of Ubuntu, if you can't use your laptop using those cables, a networked connection is possible. It seems that XDMX is the best possible route but it seems difficult to set up. There is also Synergy, but that's not exactly the same thing. Synergy works by allowing use of one keyboard and mouse across multiple computers.

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  • I got synergy working but that's not exactly what I wanted. I tried xdmx but it didn't work for me. It would give me a "(Fatal Error) dmx: InitOutput: no back-end displays found" error.
    – CamFig
    Commented Jan 28, 2017 at 17:04
  • I don't have enough experience with xdmx to help. It just seemed like a worthwhile option. Commented Jan 28, 2017 at 17:08

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