Upon waking the login screen from forced sleep the system goes to sleep again 
and again and again after 20-30sec upon leaving the system on login screen.
I thought upstart was a cure but am not so sure anymore because it started 
happening there too.

$ cat /tmp/monitors.txt 
/sys/class/drm/card0/dev:226:0
/sys/class/drm/card0/power/control:auto
/sys/class/drm/card0/power/async:disabled
/sys/class/drm/card0/power/runtime_enabled:disabled
/sys/class/drm/card0/power/runtime_active_kids:0
/sys/class/drm/card0/power/runtime_active_time:0
grep: /sys/class/drm/card0/power/autosuspend_delay_ms: Input/output error
/sys/class/drm/card0/power/runtime_status:unsupported
/sys/class/drm/card0/power/runtime_usage:0
/sys/class/drm/card0/power/runtime_suspended_time:0
/sys/class/drm/card0/uevent:MAJOR=226
/sys/class/drm/card0/uevent:MINOR=0
/sys/class/drm/card0/uevent:DEVNAME=dri/card0
/sys/class/drm/card0/uevent:DEVTYPE=drm_minor
/sys/class/drm/version:drm 1.1.0 20060810

$ xrandr --query
Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
VGA-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected (normal left inverted right x axis y axis)
   1920x1080      60.0 +   40.0  
DP-4 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 
518mm x 324mm
   1920x1200      60.0*+   59.9  
   1920x1080      60.0     59.9     50.0     24.0     60.1     60.0     50.0  
   1600x1200      60.0  
   1280x1024      75.0     60.0  
   1280x720       60.0     59.9     50.0  
   1152x864       75.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   720x576        50.0     50.1  
   720x480        59.9     60.1  
   640x480        75.0     59.9     59.9  
DP-5 disconnected (normal left inverted right x axis y axis)
DP-6 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 
518mm x 324mm
   1920x1200      60.0*+   59.9  
   1920x1080      60.0     59.9     50.0     24.0     60.1     60.0     50.0  
   1600x1200      60.0  
   1280x1024      75.0     60.0  
   1280x720       60.0     59.9     50.0  
   1152x864       75.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   720x576        50.0     50.1  
   720x480        59.9     60.1  
   640x480        75.0     59.9     59.9 

** Attachment added: "journal.txt"
   
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1450009/+attachment/4390549/+files/journal.txt

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https://bugs.launchpad.net/bugs/1450009

Title:
  suspends on closed lid, does not recognized external monitors/dock

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