#9450 HIGH Not Tri: Laptop resumes automagically without user request

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#9450: Laptop resumes automagically without user request
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 Reporter:  wad                  |                 Owner:  rsmith     
     Type:  defect               |                Status:  new        
 Priority:  high                 |             Milestone:  Not Triaged
Component:  embedded controller  |               Version:  1.5-B1     
 Keywords:                       |           Next_action:  diagnose   
 Verified:  1                    |   Deployment_affected:             
Blockedby:                       |              Blocking:             
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 On XO 1.5 laptops (specifically B1, but I believe we've seen this on
 ealier models), running Q3A10 or Q3A10b, I can't reliably suspend in Open
 Firmware.

 Using the "s" command to suspend the system, the laptop sits for some
 random amount of time, then restarts.   If it hasn't resumed in a couple
 of seconds, it is likely not to resume automatically.

 This resume may simply return an OFW prompt, or may reboot the laptop
 (believed to be a separate bug, #9449).

 I'm attaching a PDF showing four EC log traces from this happening.  The
 first column is a normal "type s<CR>, wait, then press the power button to
 resume" sequence.

 The second and third columns record a suspend where the laptop resumed
 automatically.  It appears as the EC is throwing SCIs to cause the wakeup.

 The fourth column shows a laptop which doesn't resume automatically, but
 does reboot instead of resuming when the power button is pressed.

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Ticket URL: <http://dev.laptop.org/ticket/9450>
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