#12456 NORM 13.1.0: XO-4 C1 USB enumeration failure on resume

Zarro Boogs per Child bugtracker at laptop.org
Mon Jan 14 13:54:19 EST 2013

#12456: XO-4 C1 USB enumeration failure on resume
           Reporter:  greenfeld  |       Owner:  cjb                              
               Type:  defect     |      Status:  new                              
           Priority:  normal     |   Milestone:  13.1.0                           
          Component:  kernel     |     Version:  Development build as of this date
         Resolution:             |    Keywords:                                   
        Next_action:  diagnose   |    Verified:  0                                
Deployment_affected:             |   Blockedby:                                   
           Blocking:             |  

Comment(by pgf):

 also seen by shep during runin testing:
 12-01-2013 17:34:05 [shep] how exactly am I supposed to be able to tell
    whether runin is still running fine or if there has been a failure?

 12-01-2013 17:34:54 [shep] It's been going 4+ hours and appears to be
    OK when I look at the laptop.

 12-01-2013 17:35:25 [shep] But I am seeing error messages scroll by on
    the serial console.  (If I understand correctly, when runin is used
    at the factory no one will be watching the serial console.)

 12-01-2013 17:36:02 [shep] the error message I'm seeing on the serial
    console, at the rate of several per second, is:

 12-01-2013 17:36:05 [shep] hub 1-0:1.0: unable to enumerate USB device
    on port 1

 12-01-2013 17:37:30 [shep] and it looks like it is not managing to
    suspend.... e.g.

 12-01-2013 17:37:35 [shep] [14503.612760] Freezing of tasks aborted
    after 8.89 seconds (1 tasks refusing to freeze, wq_busy=0):

 12-01-2013 17:37:35 [shep] [14503.621740]

 12-01-2013 17:37:35 [shep] [14503.623233] Restarting kernel threads
    ... done.

 12-01-2013 17:37:35 [shep] [14503.627611] Restarting tasks ...

 12-01-2013 17:38:57 [shep] and BTW, this is build 24 installed, and then
    latest kernel  (  3.5.7-00322-g6ebcabf  )

 12-01-2013 17:39:54 [shep] ... and this is with btmrvl_sdio and
    mwifiex_sdio kernel modules blacklisted (as pgf suggested I do on
    the B1 laptops I have)

 13-01-2013 12:51:37 > pgf: it would be interesting to know what's refusing
    to freeze.  do you have USB devices inserted?

 13-01-2013 14:26:18 [shep] pgf no USB devices on that machine.

 13-01-2013 15:00:06 [shep] pgf:   if you
    like, you can peruse the console log at:


Ticket URL: <http://dev.laptop.org/ticket/12456#comment:3>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system

More information about the Bugs mailing list