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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1551357

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1551357

Title:
  Shell Gnome crash when primary display is HDMI and lock screen.

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hi,

  I have the following issue:

  When the additional display (connected by HDMI) is the primary, after
  I blocked session the Gnome Shell is broken. I need restart Gnome
  Shell and apply display configuration for establish the initial
  configuration. When Gnome Shell is broked, the extension Panel-Docklet
  (v18) didn't work correctly.

  If I only use the laptop display, the issue doesn't appear.

  In the syslog I can see this issue recursively:

  [drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt
  lied (SDE)!

  I'm not an linux expert and I don't know how I can see more logs. I
  can do screenshots and send it to you if it can help you.

  More system details:
  Toshiba Tecra

  Ubuntu:
    Distributor ID:	Ubuntu
    Description:	Ubuntu 14.04.4 LTS
    Release:	14.04
    Codename:	trusty

  Gnome:
    GNOME Shell 3.10.4

  Uname:
    Linux guiu-ubuntu 3.19.0-51-generic #58~14.04.1-Ubuntu SMP Fri Feb 26 22:02:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  xrandr
    Screen 0: minimum 8 x 8, current 3520 x 1080, maximum 32767 x 32767
    eDP1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
       1600x900       60.0*+
       1440x900       59.9  
       1360x768       59.8     60.0  
       1152x864       60.0  
       1024x768       60.0  
       800x600        60.3     56.2  
       640x480        59.9  
    DP1 disconnected (normal left inverted right x axis y axis)
    DP2 disconnected (normal left inverted right x axis y axis)
    HDMI1 disconnected (normal left inverted right x axis y axis)
    HDMI2 connected primary 1920x1080+1600+0 (normal left inverted right x axis y axis) 477mm x 268mm
       1920x1080      60.0*+
       1600x900       60.0  
       1280x1024      75.0     60.0  
       1152x864       75.0  
       1024x768       75.1     60.0  
       800x600        75.0     60.3  
       640x480        75.0     60.0  
       720x400        70.1  
    VIRTUAL1 disconnected (normal left inverted right x axis y axis)

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