#8985 NORM 1.5-fir: laptop should be able to autoboot when power applied

Zarro Boogs per Child bugtracker at laptop.org
Wed Dec 2 21:26:03 EST 2009


#8985: laptop should be able to autoboot when power applied
-------------------------------------------+--------------------------------
           Reporter:  pgf                  |       Owner:  rsmith              
               Type:  enhancement          |      Status:  new                 
           Priority:  normal               |   Milestone:  1.5-firmware-C1-SMT 
          Component:  embedded controller  |     Version:  Development firmware
         Resolution:                       |    Keywords:                      
        Next_action:  test in build        |    Verified:  0                   
Deployment_affected:                       |   Blockedby:                      
           Blocking:  9245                 |  
-------------------------------------------+--------------------------------

Old description:

> there are cases (mainly XO-as-server situations) where it's desirable for
> the laptop to boot automatically.  (imagine power failure, battery
> rundown, and then power comes back.)

New description:

 there are cases (mainly XO-as-server situations) where it's desirable for
 the laptop to boot automatically.  (imagine power failure, battery
 rundown, and then power comes back.)

--

Comment(by Quozl):

 Tested on q3a18 with no battery, using removal and restoration of DC cable
 on side of laptop.

 '''no tags'''

  * unit remains off when external power restored, regardless of prior
 state,

 '''CP tag'''

  * unit turns on when external power restored, regardless of prior state,

 '''AP tag'''

  * unit turns on when external power restored, regardless of prior state,
 which does not seem to be what was desired,

 Sequence for adding tags was ''add-tag ${TAG}'', allow restart.  Sequence
 for removing was ''delete-tag ${TAG}''.  Where ${TAG} was AP or CP.

 (Curiously, if the 240V supply is interrupted, there seems to be ample
 stored power in the (black) switch mode power supply to keep the EC active
 for quite a while.  This is why I used DC power cable removal in the tests
 above.  Using 240V supply interruption may result in the unit staying off
 in AP mode.)

-- 
Ticket URL: <http://dev.laptop.org/ticket/8985#comment:6>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system


More information about the Bugs mailing list