#9100 NORM 10.1.2: 2.6.27+ early boot crashes on XO1

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#9100: 2.6.27+ early boot crashes on XO1
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           Reporter:  dsd       |       Owner:  dsaxena                          
               Type:  defect    |      Status:  new                              
           Priority:  normal    |   Milestone:  10.1.2                           
          Component:  kernel    |     Version:  Development build as of this date
         Resolution:            |    Keywords:                                   
        Next_action:  diagnose  |    Verified:  0                                
Deployment_affected:            |   Blockedby:                                   
           Blocking:            |  
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Changes (by dsd):

 * cc: hal.murray (added)


Comment:

 Hal, glowcohen:

 It seems like you can both reproduce this bug with ease (on a daily
 basis?). I've spent a few hours powering up and down a group of XOs
 without success, even though I have seen this bug appear many times in the
 past (when I wasn't hunting it...)

 2 next steps in diagnosis:

 Please replace the /versions/boot/current/boot/olpc.fth file with the
 version I am attaching. This will add another line during the bootup
 sequence that says "Leaping...". When the hang occurs, we need to know if
 the "Leaping" message appears, or if the last line on screen continues to
 be "Loading ramdisk"

 Secondly, I'd like to reconfirm an earlier theory that this only happens
 on cold boot, and never on reboot. This can be done by adding a line to
 the /etc/rc.local file that says:

 {{{
 (sleep 60 && reboot) &
 }}}

 Then reboot manually and leave the machine overnight. It will reboot on a
 continuous cycle. See if the boot hang ever occurs.

 When you want to exit the loop, go to a virtual terminal as the system
 loads and quickly run "killall sleep" then revert the modification to
 /etc/rc.local. Or just reflash the system.

 thanks!

-- 
Ticket URL: <http://dev.laptop.org/ticket/9100#comment:15>
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