Public bug reported:

It happens very frequently that, after resuming from suspend, as soon as
I enter my password into GDM, gnome-shell crashes.  I initially see my
windows appear for a moment (with titlebars, etc.), then gnome-shell
crashes, the titlebars disappear, and I am unable to do interact with
any windows.  Eventually gnome-shell restarts itself and the titlebars
and functionality are restored.

This doesn't happen 100% of the time, and I have not been able to find
any correlation.  In my syslog, I see lines like:

Aug 10 14:30:49 hermes org.gnome.Shell.desktop[5325]: Window manager warning: 
Failed to set power save mode for output VGA-1: Permission denied
Aug 10 14:30:49 hermes org.gnome.Shell.desktop[5325]: Window manager warning: 
Failed to set power save mode for output eDP-1: Permission denied
Aug 10 14:30:58 hermes gnome-session[6503]: gnome-session-binary[6503]: 
WARNING: Application 'org.gnome.Shell.desktop' killed by signal 6
Aug 10 14:30:58 hermes gnome-session-binary[6503]: WARNING: Application 
'org.gnome.Shell.desktop' killed by signal 6


This is on Ubuntu 17.04, gnome-shell 3.24.2-0ubuntu0.1, under Xorg with Intel 
HD 4600 graphics.  I experience the same crashes under Wayland, making it 
*completely* unusable.  At least under X I can still recover my session.

This is particularly annoying because whenever gnome-shell dies, it
triggers a separate issue that kills all active Firefox content
processes, requiring me to restart Firefox as well.

If there's a way to get some better debugging info for this, please let
me know.

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

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https://bugs.launchpad.net/bugs/1709994

Title:
  gnome-shell crashes often on unlock / resume from suspend

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