Ubuntu "Could not get screen information" after upgrade

Solution 1:

If you do a ps x|grep control-center command in a terminal window, you may expect gnome-control-center as result. Close this control center window and instead type unity-control-center in a terminal window.

This control center will show your screen information. Pin it in the launcher for future use and possibly pin out the former one.

Solution 2:

reinstalling the Unity Control center worked for me :

sudo apt remove unity-control-center

sudo apt install unity-control-center

(Ubuntu 16.04 with Unity)

Solution 3:

I've some trick for this: right click on screen, choose "Change desktop background", click on "All settings" and go to "Displays".

This way it's works for me, but through Settings -> Display doesn't

Solution 4:

I had the same problem with 16.10. At some point, I did some clean up and one of the following removed unity-control-center:

sudo apt full-upgrade
sudo apt-get autoremove

The solution was to manually reinstall unity-control-center:

sudo apt install unity-control-center

I now see 2 Settings apps in Dash: "Settings" (gnome-control-center) and "System Settings" (unity-control-center).