1

I have a Carbon X1 running Ubuntu 19.04 with KDE Plasma 5. When colleagues also running KDE plug an external monitor in, System Settings -> Display and Monitor will show all the displays. Mine however only show one box, even though the Primary Display dropdown lists No Primary Output, Laptop Screen and U28D590 (HDM1). This seems to mean I can mirror my output on both screens, but nothing else.

enter image description here

How do I get both displays to appear, so I can arrange them, and display different out on each.

  • Are your colleagues also running "running Ubuntu 19.04 with KDE Plasma 5" or are they using Kubuntu 19.04? – DK Bose Aug 7 at 10:46
  • Thanks - I'll have to check. Should it matter though? Are you saying Ubuntu 19.04 with KDE Plasma 5 may not support multiple monitors? – matt freake Aug 7 at 14:55
  • 1
    The GUI may be misleading. When the screens are mirrored and have the same resolution, they are stacked on top of each other and you only see the display in front. Try dragging the monitor somewhere else, you should now see your second monitor. – danzel Aug 7 at 15:03
  • 1
    Brilliant - that's exactly it. Feel free to add it as an answer and I'll accept it (although I'm surprised it is not a dupe) – matt freake Aug 7 at 16:07
  • Using @ before "danzel" maybe better: @danzel. – DK Bose Aug 7 at 17:09
1

When multiple monitors display the same content, have the same resolution and are not unified, they are stacked exactly on top of each other in the GUI. Just drag the monitor in front to the side to reveal the other monitor(s):

enter image description here

  • Thanks. Seems a weird GUI choice to me – matt freake Aug 12 at 13:24

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.