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[Launchpad Bug Tracker <1441095@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:ubuntu/trusty/modemmanager

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https://bugs.launchpad.net/bugs/1441095

Title:
  novatel: improve probing for Dell branded modems

Status in Libmbim:
  Fix Released
Status in ModemManager:
  Fix Released
Status in OEM Priority Project:
  In Progress
Status in OEM Priority Project trusty series:
  In Progress
Status in libmbim package in Ubuntu:
  Fix Released
Status in modemmanager package in Ubuntu:
  Fix Released
Status in network-manager package in Ubuntu:
  Fix Released
Status in libmbim source package in Trusty:
  Fix Committed
Status in modemmanager source package in Trusty:
  In Progress
Status in network-manager source package in Trusty:
  In Progress

Bug description:
  [Impact]

   * The users can not use the WWAN of Sierra DW5809e (EM7305) or Sierra
  DW5811e (EM7455) to connect to Internet.

  [Test Case]

   * Insert the WWAN of Sierra DW5809e (EM7305) or Sierra DW5811e
  (EM7455).

   * Insert the SIM, boot the Ubuntu system, and connect to Internet by
  NetworkManager.

  [Regression Potential]

   * No trivial regression so far.

  [Other Info]
   
   * None

  Dell rebrands modems from different vendors, including Novatel, Sierra
  and Ericsson. Until now we defaulted to the Novatel plugin when a Dell
  device was found, but then we're breaking newer MBIM Sierra Dell-
  branded modems, as we don't have MBIM support in the Novatel plugin.

  So, we should try to improve the probing in the Novatel, Sierra and
  MBM plugins, so that they probe also Dell devices, and we'll then try
  to match via AT-probing which plugin should be handling the Dell
  device.

  https://bugs.freedesktop.org/show_bug.cgi?id=86713

  Could we backport this patch  into trusty? Thanks!

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