Openmoko Bug #2257: gsm0710muxd: "Modem does not respond to AT commands"

[Openmoko Public Trac]

#2257: gsm0710muxd: "Modem does not respond to AT commands"
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 Reporter:  lindi            |          Owner:  openmoko-kernel     
     Type:  defect           |         Status:  new                 
 Priority:  high             |      Milestone:  stable-kernel-2009.1
Component:  System Software  |        Version:  unspecified         
 Severity:  major            |       Keywords:                      
 Haspatch:  0                |      Blockedby:                      
Estimated:                   |    Patchreview:                      
 Blocking:                   |   Reproducible:  sometimes           
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Comment(by arhuaco):

 I'll start testing this bug.

 # cd /sys/class/i2c-adapter/i2c-0/0-0073/neo1973-pm-gsm.
 # echo 0 > power_on; sleep 3; echo 1 > power_on; echo 1 > reset
 # socat - file:/dev/ttySAC0,crtscts,crnl,b115200
 ATZ

 (No reply, strace shows: select(16, [0 3], [], [], NULL).

 It's the first time I talk to the modem in the GTA02. I should have
 received a reply from the modem, right?

 BTW, I didn't get any reply with b8b36e5ec3db71d5. Do I need to enable
 echo?

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2257#comment:17>
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