Re: 3G Modem DHCP time out



Emmanuel Riboulet-Deyris <erd lastree net> writes:

Thank's a lot Bjørn for pointing me this bug report. It appears that
it's exactly the bug I'm encountering (on the same laptop by the way).

I'm very far away from being an expert about that, but if I understand,
the simplest way to make thinks work currently with a 3.8.x kernel would
be to rebuild my kernel with the key CONFIG_USB_NET_CDC_MBIM set to "n".
Is that correct ?

Sorry for the delayed answer.  Too much vacation outside civilization :)

I believe the best option is upgrading to 3.8.5 or newer and setting the
new cdc_ncm parameter "prefer_mbim" to false. E.g. by adding a
/etc/modprobe.d/foo.conf with

  options cdc_ncm prefer_mbim=N

This will make cdc_ncm/cdc_mbim prefer NCM over MBIM without sacrificing
the MBIM support completely.


Bjørn


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