I have Dell G3 15 and I have installed Ubuntu 18.04 and at first my second monitor was not working.

I have installed the nvidia driver as such: enter image description here

And after I performed this tutorial: http://ae0bq.org/?p=137

At this point only my second hdmi connected display seems to work. My laptop display remains black.

I aslo tried switching from gdm3 and lightdm with the same output. Under wayland, on gdm3 I was able to work on my laptop display but not on the hdmi connected one.

How can I make both displays work? (there is no hardware failure)


May be a dumb question but are you sure your display is enabled ? Settings -> display (I guess mine in french is "Affichage")

What happens when you unplug your external monitor ?

enter image description here

| improve this answer | |
  • Under wayland: I have another active display there but no image on it. Under xorg: I do not see the latop display after login – Nitescu Lucian Feb 20 at 14:29

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.