[Voyage-linux] Re: Alix6b2 not detect Sierra Wireless MC8775

[(spam-protected)]

Jeff,

thanks for the AT command ref.

 The firmware is surprisingly old for a 'new' model card:
 ati
    Manufacturer: Sierra Wireless, Inc.
    Model: MC8790V
    Revision: K1_0_2_4AP C:/WS/FW/K1_0_2_4AP/MSM6290/SRC 2008/08/26 13:18:25
    IMEI: 35...
    IMEI SV: 2
    FSN: D680419072010
    3GPP Release 6
    +GCAP: +CGSM,+FCLASS,+DS

 But it is not a firmware crash:
  at!gcdump
    No crash data available

 The SIM commands get errors (same in either SIM slot):
   at!auth
      ERROR
   at!iccid
      ERROR

 So now I'm looking at the Alix6c2 manual where it says that the BIOS does
not properly set GPIO1 and this controls the selection of the SIM card.

 Also noticed:
   card is more stable using just usbserial
   but when using "sierra" module, either 1.2.9c or the latest 1.3.1b,
    the driver sometimes spits out a lot of debug and then
   "Disabling IRQ #15", which is fatal.

Rodney


> Yes, a colleague of mine has seen something like this, and I've seen
> some other bizarre behavior, like getting an immediate SIGHUP when
> doing PPP, implying that the underlying device returned an error and
> made PPPd give up and close it.
>
> In both cases, we theorize that the firmware on the card is crashing
> and rebooting.
>
> Can you send me the results from starting microcom and running "ATI"?
> I'd like to know your firmware revision relative to mine. Sorry, it's
> not convenient for me to do my ATI right now. What you'll likely
> discover is you have very old firmware. The latest firmware I could
> find is U1_2_45, which is available from Lenovo's website. You need to
> be in windows to install the firmware, which is not convenient on the
> Alix. (I went some ways towards tearing apart the installer to try to
> find the mechanism it uses and do it myself, but couldn't do it.)
>
> Also, take a look at this document:
>
>   http://www.sierrawireless.com/resources/documents/support/2130617_Supported_AT_Command_Reference_Rev_2.1.pdf
>
> In it you can see how to dump/clear the crash log from your modem. It
> would be interesting to know if it is filling with details.
>
>   -jeff
>