Huawei E3276 problem

[Markus Gothe]

I am VERY biased and probably covered with lots of NDAs. The quick solution: Buy a Dovado 3G/LTE router. The E3276 is supported.

//Markus Gothe - The panama hat hacker

8 nov 2012 kl. 20:47 skrev Bjørn Mork <bjorn at mork.no>:

> Thomas Schäfer <tschaefer at t-online.de> writes:
> 
>> Hi,
>> 
>> The logfiles show that your modem switches from:
>> 
>> 12d1:14fe
>> to
>> 12d1:1506
>> 
>> Which kernel did you use with the attached dmesg.log?
>> 
>> Since kernel 3.4  12d1:1506 should work with option and qmi_wwan.
> 
> Nope, not necessarily.  Huawei obviously have more firmware code bases
> than product IDs ;-)
> 
> You need to look at the class codes.  Devices with subclass 01 are fine,
> devices with subclass 02 are not.  The device Olof got is one of those
> based on "Jungo" firmware, and they are not supported by the qmi_wwan
> driver.
> 
> Based on the out of tree Huawei driver, I guess this device can be made
> working with the cdc_ncm driver given some changes to the bind function.
> But that effort will only make sense if we have some way to manage it.
> Knowing whether it embeds QMI in CDC commands would be very useful.
> 
> If it does, then I think the best is to just create a new driver reusing
> the parts of cdc_ncm we just exported for cdc_mbim. Both adding cdc_ncm
> support to qmi_wwan and adding qmi and additonal probing logic to
> cdc_ncm will create unnecessary complexity and dependencies.
> 
> 
> Bjørn
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