Sierra EM7355 - Cannot connect

Aleksander Morgado aleksander at
Thu Sep 6 07:36:13 UTC 2018


On Mon, Aug 27, 2018 at 11:48 AM, Yevgeny Bar Lev <ykrivolapov at> wrote:
> Hello,
> Thank you for the prompt response,
> I am using,
> /usr/lib/ ->
> and
> ModemManager (version 1.8.0)
> Kernel 4.17.14

This is strange. Could it be maybe a timing issue?
Have you tried to reboot ModemManager (sudo systemctl restart
ModemManager) to see if it works? If it does work after the MM
restart, then maybe we didn't wait long enough for the cdc-wdm port to
be functional after it's been exposed. It wouldn't be the first time
we had to update the amount of time we probe the cdc-wdm ports.


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