E3276: Failed to find primary AT port

Bjørn Mork bjorn at mork.no
Wed Jun 11 11:09:13 PDT 2014

No, I don't have any idea. Is there any sign of the modem being plugged in the kernel log when this happens? Is the problem there if you switch to another port?

AFAIK there isn't much a driver can do to make things fail like this..


On 11 June 2014 19:06:22 CEST, Aleksander Morgado <aleksander at aleksander.es> wrote:
>On Wed, Jun 11, 2014 at 7:02 PM, Georg Lippitsch
><georg.lippitsch at gmx.at> wrote:
>>> On Wed, Jun 11, 2014 at 4:37 PM, Aleksander Morgado
>>> Ah, no, wait. The thing is that I have a branch not yet merged with
>>> support for NDISDUP in the /dev/cdc-wdm port. Are you able to get
>>> "aleksander/huawei-ndisdup-cdc-wdm-rebased-1.2" branch from upstream
>>> ModemManager git and try with that one?
>> Hah, indeed with this I'm able to connect the modem! Thank you very
>> But now, there is another strange problem: The modem only works when
>> connected for the first time. If I physically re-plug it, there is no
>> /dev/cdc-wdm0 anymore, and obviously ModemManager can't connect.
>> I assume this is a problem with the kernel modules. I already use the
>> patches of these modules, but still not everything works as expected.
>> you also involved into this?
>Bjørn, any idea? This is with the new huawei-cdc-ncm driver.
>Dan, any issue with merging that branch to git master?

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