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Re: Huawei E3276s-150 confusion

Posted: Mon Feb 04, 2019 2:21 pm
by Tester
Hello again,

I've been successful with the solution.
However, I am now looking at expanding the "device with this modem" to do other things as well.

However, I seem to be "KILLING" something at some point in time.
Cause the capability this solution offers, break, when I install the things I want to run in parallel on the very same RPi.

The question I have is - the other solution I want to run in parallel is also USB-connected.

Quote:

Either disable the mbim preference in usb_modeswitch.conf by setting
DisableMBIMGlobal=1

or

copy the 12d1:157c config file from the /usr/share/usb_modeswitch folder to the /etc/usb_modeswitch.d folder, then edit the copy by adding NoMBIMCheck=1
to it.

The first way disables mbim for all modems while second way disables mbim for this specific modem.

End quote:

I have done the first solution - is there a possibility that the first solution could affect other USB connected devices (non-modems) ?

Am Bestem,
Tester

Re: Huawei E3276s-150 confusion

Posted: Mon Feb 04, 2019 8:28 pm
by Josh
No reason to worry.

1. Only devices known to usb_modeswitch are touched by it at all

2. The "MBIM check" is a very specific test to find USB configurations in a device that match the profile for MBIM. This translates to an interface with class of 2 and subclass 0x0e.

If a non-modem device is handled by usb_modeswitch and provides an interface like this, it's seriously screwed up ... All other devices remain unaffected.