Openmoko Bug #1530: Modem only repeats +CBM Qtopia is not sending anything on wake

[Openmoko Public Trac]

#1530: Modem only repeats +CBM Qtopia is not sending anything on wake
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 Reporter:  zecke    |       Owner:  openmoko-devel at lists.openmoko.org
     Type:  defect   |      Status:  new                              
 Priority:  normal   |   Milestone:                                   
Component:  unknown  |     Version:  GTA02v5                          
 Severity:  normal   |    Keywords:  Qtopia, GSM, Calypso             
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 We get the following over suspend/resume cycles from Qtopia. For some
 reason the modem reports plenty of cell broadcast messages (all having the
 same content) and Qtopia does not send any command anymore. Specially on
 wakeup ATE0 and AT+CREG should be send but that is not the case.

 I have no idea if this is a modem or Qtopia issue. To debug one would have
 to look into what Qtopia thinks about flow control, the internal state of
 the atchat queue and what it is trying to do.

 One explanation would be the modem refuses to take any commands but keeps
 sending cell broadcast. Another one would be an ordinary Qtopia bug.

 Below is raster's Qtopia log with a SIM card in australia.

 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "028000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"
 PowerManagement :  APM Event 3
 PowerManagement :  Resume event
 AtChat :   Ficgta01ModemService::wake()
 " Chat :  T : "
 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "029000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"
 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "028000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"
 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "029000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"
 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "028000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"
 PowerManagement :  APM Event 10
 PowerManagement :  Suspend event
 PowerManagement :  Asking the modem to suspend, waiting for ack
 AtChat :   Ficgta01ModemService::suspend()
 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "029000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"
 AtChat :  N : "+CBM: 88"
 AtChat :  N :
 "028000320111D33CD95DCE83864262A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D168341A8D46A3D100"

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Ticket URL: <https://docs.openmoko.org/trac/ticket/1530>
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