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[Frank <1309054@xxxxxxxxxxxxxxxxxx>]

Thread on this topic concerning Ubuntu and Linux Mint:

Huawei E355 USB router wrongly installed as modem
http://forums.linuxmint.com/viewtopic.php?f=53&t=148990

I am also affected by this bug.

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https://bugs.launchpad.net/bugs/1309054

Title:
  huawei E355 usb router not working properly in xubuntu 14.04

Status in “modemmanager” package in Ubuntu:
  Confirmed
Status in “modemmanager” package in Arch Linux:
  New
Status in “modemmanager” package in Debian:
  New

Bug description:
  huawei E355 is a USB router (1x Ethernet-over-USB, 5 x WLAN) [1].

  with ubuntu 12.04.3 LTS (3.8 series of kernel), it was recognised and
  worked properly by default. a connection was created under the 'wired
  connection' option just by plugging the device into the machine.
  however, since then it never worked properly. in (x)ubuntu 13.10, an
  alternative worked [2,3]; which unfortunately stopped working in
  xubuntu 14.04.

  expected behaviour: one connection under wired connection and one
  under wifi connection should be available. ubuntu 12.04.3 LTS, ubuntu
  13.04 performed in expected manner.

  present behaviour:  only wifi hotspot generated by the router could be
  used. the ethernet over usb function is totally unavailable in
  (x)ubuntu 14.04.

  possible reason: cdc_ncm kernel was changed beyond 3.8 series but the
  changes  was not considered in the modem manager. in [2,3], the
  provided solution was based on deactivating the changes made in the
  cdc_ncm beyond 3.8 kernel series.

  [1] -> http://www.huaweidevice.co.in/Products/MobileBroadband/E355.php
  [2] -> http://forums.linuxmint.com/viewtopic.php?f=53&t=148990
  [3] -> http://forum.ubuntuusers.de/topic/huawei-e355-als-kabelnetzwerk-einbinden-wwan0-/

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: modemmanager 1.0.0-2ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
  Uname: Linux 3.13.0-19-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Apr 17 19:44:36 2014
  InstallationDate: Installed on 2014-04-16 (1 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  SourcePackage: modemmanager
  UpgradeStatus: No upgrade log present (probably fresh install)

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