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I have a Dell XPS 13 9370 (early 2018 model) with Ubuntu 17.04
installed. I use the Gnome on XOrg session.
When I close the laptop lid, I can see through the small (< 1mm)
hairline crack that the screen is still active, showing the entire
desktop. This happens only once I am logged in to the gnome shell
session, I tried closing the lid before logging and the screen is
** Affects: gnome-shell (Ubuntu)
Screen remains active on lid close
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