#11600 BLOC 1.75-so: Hang w. OS26

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#11600: Hang w. OS26
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           Reporter:  wad       |       Owner:                                   
               Type:  defect    |      Status:  new                              
           Priority:  blocker   |   Milestone:  1.75-software                    
          Component:  kernel    |     Version:  Development build as of this date
         Resolution:            |    Keywords:  XO-1.75, suspend                 
        Next_action:  diagnose  |    Verified:  0                                
Deployment_affected:            |   Blockedby:                                   
           Blocking:            |  
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Changes (by martin.langhoff):

 * cc: martin.langhoff (added)
  * priority:  high => blocker


Comment:

 This is present on OS27, and OS27 with a newer kernel
 (4a6b24ff528b7767a574f5ec8d2d09a5f7da0fbd, same as OS28). My steps to
 repro seem to be: boot, open a Sugar Terminal session, let it idle.

  * Seems to affect units when aggressive suspend kicks in, driven by
 powerd
  * When frozen, power LED is on, solid
  * Units were associated to an AP, using WPA2
  * echo 0 > /sys/power/pm_async changes the behaviour slightly: camera
 light is on when the unit is frozen
  * Unclear whether it happens on they way down, or on the way up
  * Attempts to repro with WOL wakeups (using ping) didn't seem to trigger
 it

 Sam has more notes on this, I believe.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11600#comment:3>
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