Ubuntu
usb-modeswitch package

  1. Bug #1308895
  2. Comment #20

Comment 20 for bug 1308895

Revision history for this message
Lars Melin (larsm17) wrote : Re: Please merge usb-modeswitch from Debian unstable - Huawei E3531 does not automatically switches to modem mode (no udev rules for this modem in Ubuntu's /lib/udev/rules.d)

@ Saurabh Sharma

12d1:1506 is a usb id for E3531s after it has been mode switched so usb_modeswitch has done what it should do.
I think your problem is either linux driver related or NetworkManager related so please provide the output from:
lsusb -v -d 12d1:1506

It will show how the interfaces are intended to be used and which driver(s) should be used.

You can also do:

cat /proc/bus/usb/devices

which will show which drivers have already bound to the interfaces.