#4470 BLOC Update.: WLAN stops working after good functionality

[Zarro Boogs per Child]

#4470: WLAN stops working after good functionality
-----------------------+----------------------------------------------------
  Reporter:  kimquirk  |       Owner:  carrano 
      Type:  defect    |      Status:  new     
  Priority:  blocker   |   Milestone:  Update.1
 Component:  wireless  |     Version:          
Resolution:            |    Keywords:          
  Verified:  1         |  
-----------------------+----------------------------------------------------

Comment(by jcardona):

 > another dmesg file with more debug flags on

 The failure event is not captured on
 [http://dev.laptop.org/attachment/ticket/4470/dmesg-libertas-debug-
 0x1827f7 this last  log] (it probably wrapped around).

 But we can see that the command queue is full:

 {{{
 [67041.723398] libertas host: PREP_CMD: cmdnode is NULL
 }}}

 because it's not being dequeued by the main thread that sends the commands
 to the device.  With those debug flags (0x1827f7), if the main driver
 thread was running, you would see these messages like:

 {{{
 [58756.214569] libertas thread: main-thread 111: intcounter=1
 currenttxskb=00000000 dnld_sent=0
 [58756.223130] libertas thread: main-thread 222 (waking up): intcounter=1
 currenttxskb=00000000 dnld_sent=0
 [58756.232709] libertas thread: main-thread 333: intcounter=1
 currenttxskb=00000000 dnld_sent=0
 [58756.241252] libertas thread: main-thread 444: intcounter=0
 currenttxskb=00000000 dnld_sent=0
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/4470#comment:41>
One Laptop Per Child <http://dev.laptop.org>
OLPC bug tracking system