#7964 BLOC 8.1.1 (: C3 laptops sometimes identified as pre-B3 (B2)

Zarro Boogs per Child bugtracker at laptop.org
Thu Aug 14 16:44:20 EDT 2008


#7964: C3 laptops sometimes identified as pre-B3 (B2)
----------------------------+-----------------------------------------------
   Reporter:  wad           |       Owner:  rsmith               
       Type:  defect        |      Status:  new                  
   Priority:  blocker       |   Milestone:  8.1.1 (was Update1.1)
  Component:  not assigned  |     Version:  not specified        
 Resolution:                |    Keywords:  EC                   
Next_action:  add to build  |    Verified:  0                    
  Blockedby:                |    Blocking:                       
----------------------------+-----------------------------------------------
Changes (by rsmith):

  * next_action:  code => add to build


Comment:

 Replying to [ticket:7964 wad]:
 > Some C3 motherboards are erroneously identified as B2 motherboards by
 the EC.   This can cause brick (or brick-like) symptoms.   They are
 running Q2E12 firmware.
 >
 > The hardware components are fine -- the board ID voltage is ALMOST
 identical between working and non-working units.   The non-working units
 have board ID voltages slightly below 2.06V (the ideal for C3), but still
 well within tolerances.

 Typo in the table. Will be in the upcoming Q2E13 release.

-- 
Ticket URL: <http://dev.laptop.org/ticket/7964#comment:1>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system


More information about the Bugs mailing list