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I recently installed ubuntu 17.10.1 after previously messing it up.So while I was reinstalling Android Studio I faced an issue where it refused to install.After following some tutorial I found out that the issue was running their installer script as Super User but before that another one had mislead me into using this command "unset DISPLAY" so now I can access my display devices and I badly need the night light feature.Please help.

Here is a screenshot of what I get in the display devices panel.Yet before using the command I could access it.link here

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Did you just try logging out and in again? Anyway, the default value of the DISPLAY variable is :0 so to reset it:

export DISPLAY=":0"
  • Let me try and get back to you – The-Kamble Apr 19 '18 at 12:35
  • But logging out didnt help – The-Kamble Apr 19 '18 at 12:35
  • It didnt work.I just tried it but I still get the same message as in the screenshot – The-Kamble Apr 19 '18 at 12:50

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