*** This bug is a duplicate of bug 1532508 ***

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1532508, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may

** This bug has been marked a duplicate of bug 1532508
   Screen contents revealed briefly on resume, before even unlocking

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  Login screen bypassed for at least 20 seconds after awakening machine
  from suspend

Status in GNOME Shell:
Status in Ubuntu GNOME:
Status in gnome-shell package in Ubuntu:

Bug description:
  Since upgrading to GNOME 3.20 on Ubuntu GNOME 16.04 I have noticed
  something rather worrying which has occurred twice so far, this is
  what I have observed:

  1. After opening my laptop lid the screen either goes black or
  displays a frozen state of the shield opening or something similar

  2. Then it suddenly shows Firefox (the last window I had open, though
  I did minimize it before suspending my machine my closing the laptop
  lid) and actually allows me to use my mouse to interact with it by
  going to a new tab, or really anything I want, I haven't tried to see
  if I am able to type in this state yet or not, but I will update this
  report the next time I manage to test it out. This is obviously a
  really bad thing for security as for at least 20 long seconds (each
  time it occurs it seems to last longer) it logs you straight back in
  and bypasses the login screen, though for some reason the title part
  of the window and everything above that are completely black as if
  someone just put a big black box over them.

  3. I then suddenly see black and no Firefox (this black only lasts for
  a short period though), then I see what I see when I would normally
  log in for the first time (my background image coming in with that
  getting larger image with the top bar at the top of it), and then it's
  back to the normal locked screen as it should be.

  The sequence of events (what I see on my screen) seems to vary between
  occasions, but the ability to interact with my machine without having
  to log in stays even though it at some point does register that it
  should really be taking me to the locked screen. And I have checked
  and if I for instance open a new tab and go to one of my bookmarks in
  Firefox during this strange bypassing period, when I properly log back
  in again (and find Firefox minimized as I left it) I find that that
  tab is still open so the changes are real and lasting.

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