Re: Unable to connect to mobile broadband: +CME ERROR:30

[Dan Williams <dcbw redhat com>]

On Mon, 2010-10-11 at 10:43 +0200, van Schelve wrote:
> Hi,
> 
> I found a different problem where I get reports from our users in the 
> field. They tell us that they are not able to connect to mobile 
> network.
> 
> In the logs I captured I found a cme error 30 which means "No network 
> service". I tried it two or three times with still the same problem.
> Then I tested with a second identical laptop with an identical setup 
> and I was able to bring up the mobile connection on this system without
> any problem.
> 
> So I decided to use the rfkill switch on the laptop where I found the 
> problem with the result that dialin was possible after doing th rfkill 
> cycle.

Interesting; your module seems to have firmware 1.1.8.3, while I have 3
different modules with 1.1.8.15, 1.1.9.3, and 2.0.8.19.  I think
2.0.8.19 screwed my device though, so don't try it.  I've noticed odd
problems like this on other Sierra devices in the past that were solved
by firmware updates (AC875 and AC881), but it's pretty hard to find
firmware upgrades for their  embedded modules.  Do you know offhand if
any of the devices in the field has other firmware than 1.1.8.3?

In any case, I'll add some code to ModemManager to get better Sierra
device status for GSM devices to help debug this issue.  If you run into
this problem yourself, we want the output of AT!GSTATUS? to get more
info if you can.

Dan