[Bug 1584612] [NEW] Mobile broadband requires reboot every time

[Con Kolivas]

Public bug reported:

I have a laptop with a mobile broadband device which only ever
initialises on a reboot.

If I suspend to ram and then resume it fails to work. If I power the
machine down and then cold boot it asks for the sim pin code which then
also asks for the administrator password. However if I reboot the device
initialises fine and connects immediately without any pin code nor
administrator password.

I initially tried to report this partially as a kde bug here with more information:
https://bugs.kde.org/show_bug.cgi?id=345284
But it appears to affect other desktop environments as well and the main issue is that it never successfully resumes unless I reboot. It was originally on an older kubuntu but even after upgrading to 16.04 the issue persists.

Relevant lsusb entry:
Bus 001 Device 003: ID 1199:9041 Sierra Wireless, Inc. 

Relevant dmesg components:
[    4.690413] usbcore: registered new interface driver cdc_ncm
[    4.696052] usbcore: registered new interface driver cdc_wdm
[    4.713496] cdc_mbim 1-6:2.12: cdc-wdm0: USB WDM device
[    4.713687] cdc_mbim 1-6:2.12 wwan0: register 'cdc_mbim' at usb-0000:00:14.0-6, CDC MBIM, ca:cf:8e:3c:a9:05
[    4.713708] usbcore: registered new interface driver cdc_mbim

** Affects: plasma-nm (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1584612

Title:
  Mobile broadband requires reboot every time

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