When not touched for long elementary OS goes black with a small underscore at top left corner & when pressed any key pc doesn't wake up

  • Your pc probably went to sleep. See System Settings > Power for the relevant settings. Why it fails, could be caused by the driver of your graphics card. Could you share some details on your pc, Elementary version, graphics card info, selected driver. – Peter Uithoven Jan 24 '17 at 20:52
  • @PeterUithoven I have 710M and I have installed GF117M from software & update (proprietary driver) – Abhimanyu Aryan Jan 24 '17 at 21:01
  • From a added ppa? And again, which Elementary OS version are you running? – Peter Uithoven Jan 24 '17 at 21:28
  • @PeterUithoven yes via ppa. I am running Loki (latest) from website – Abhimanyu Aryan Jan 24 '17 at 21:29
  • And I confirm its graphic driver that's causing problem. Disabled it and moved to xorg default and not issue – Abhimanyu Aryan Jan 24 '17 at 21:30

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