#9743 HIGH 1.5-har: Reboot instead of resume on XO-1.5

Zarro Boogs per Child bugtracker at laptop.org
Tue Nov 24 23:54:27 EST 2009


#9743: Reboot instead of resume on XO-1.5
----------------------+-----------------------------------------------------
 Reporter:  wad       |                 Owner:  wad           
     Type:  defect    |                Status:  new           
 Priority:  high      |             Milestone:  1.5-hardware-C
Component:  hardware  |               Version:  1.5-B3        
 Keywords:            |           Next_action:  reproduce     
 Verified:  0         |   Deployment_affected:                
Blockedby:            |              Blocking:                
----------------------+-----------------------------------------------------
 On an XO-1.5 B3 prototype (#17), running Q3A16 and os45, I had a reboot
 instead of a resume.

 The laptop was modified with the XO1.5 WLAN SR ECO:
  http://wiki.laptop.org/go/XO1.5_WLAN_SR_ECO

 The laptop was set to autowack by adding:

  50 autowack-delay

  autowack-on

 to the olpc.fth file.

 It was associated with an access point.

 From the terminal activity, I enabled EC wakeup events using:

     sudo sh

     echo EC > /proc/acpi/wakeup

 I then started a script running:

     for i in seq 1 100000; do echo $i; sleep 1; echo mem >
 /sys/power/state; done;

 On the first resume, it did the +r+r+X+Forthmacs rumba.

 I have seen this once before, on a laptop without the XO1.5 WLAN SR ECO.
 At that time, I attributed it to MPPT experiments ongoing with that
 motherboard.  The symptoms, however, are identical and this motherboard
 has no modifications to enable MPPT.

-- 
Ticket URL: <http://dev.laptop.org/ticket/9743>
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