Re: Huawei E5786

[Dan Williams <dcbw redhat com>]

On Fri, 2017-06-30 at 21:43 +0300, Juha Koskiniemi wrote:
> I got some progress. It is indeed NM fail. If I have do devices
> connected as need to be connected. 3G phone and then LTE modem. I
> command.modprobe -a option && echo "0x12d1 0x1506" >
> /sys/bus/usb-serial/drivers/option1/new_id and device show up then in
> Modem Manager. Then Modem Manager start to scan operators. Then in NM
> icon come up in NM menu as it was previously transparent. I even some
> point was able to send #99* USSD and get connected to home network as
> previously it stays unconnected what ever you made. This I could not
> reproduce. What kind of logs to look at. What can cause such a
> sequence? This modem is very much up to date and for sure there is
> interest to connect other too. How I can add modbrobe in boot up?

If the modem is not recognized by the kernel drivers, then it will be
unavailable to ModemManager and NetworkManager as a WWAN device.  The
solution to that issue is to get the USB device IDs added to the right
kernel driver.

Most Huawei devices are matched either by 'option' or by interface
info.  The full dump of "lsusb -v -d 12d1:1506" would be useful so we
can figure out what driver the device should be using.

Dan