Public bug reported:

When trying to suspend the system via pressing the power button in the
system tray with ALT key pressed, it is possible to interrupt the system
to enter sleep mode and fall back to screen lock. While trying to unlock
the screen, the system goes to sleep immediately.

Gnome-shell is able to suspend the system by drop-down menu in the
system tray. By pressing ALT key or long-press the power button until it
switches to suspend icon. The system will suspend if it is by the long-
press power button, while with ALT key pressed, there is a failure rate
that causes the suspend process to be interrupted.

The second issue is that if the suspend process is interrupted, the
locked screen is shown. While trying to unlock the screen by inputting
password, the system will go sleeping after that.

STEPS TO REPRODUCE:
1. To suspend system via pressing the power button in the drop-down system tray 
with ALT key pressed.
2. During system is going to sleep, e.g., screen going dark, emulate a key 
bounce by pressing ALT key again.

RESULTS:
The system going to sleep without a problem.

EXPECTED RESULTS:
The locked screen shows up and goes to sleep after tens of seconds. While 
trying to unlock screen, system enter suspend after unlocking successfully.


ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.4-0ubuntu18.04.1

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: originate-from-1838504

** Also affects: gnome-shell
   Importance: Undecided
       Status: New

** No longer affects: gnome-shell

** Tags added: originate-from-1838504

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https://bugs.launchpad.net/bugs/1839016

Title:
  Suspend is iterrupted by ALT key

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