Public bug reported:

Hi, I have an Acer Travelmate P648 with a Huawei ME936
internal USB mobile broadband card, and can't connect.
This didn't work in 17.04, and still does not work in 17.10.

The USB device is successfully connected, 
ModemManager gets as far as "Simple connect state (8/8): All done"
During the setup ModemManager complains with "Couldn't find associated cdc-wdm 
port for 'net/wwp0s20f0u9c2'"

DHCP tries to get a configuration, but " dhcp4 (wwp0s20f0u9c2): request timed 
out".
IP6 is set to "automatically" in the network settings for this configuration. 

and finally connection fails with 
"device (ttyUSB0): state change: ip-config -> failed (reason 
'ip-config-unavailable', internal state 'managed')"

I checked that there are enough credits left in my account with the
provider.

Any ideas what else to check ?

Yours,
Steffen

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: modemmanager 1.6.8-1
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Dec  3 11:27:49 2017
InstallationDate: Installed on 2017-04-24 (222 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: modemmanager
UpgradeStatus: Upgraded to artful on 2017-12-02 (0 days ago)

** Affects: modemmanager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug artful wayland-session

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https://bugs.launchpad.net/bugs/1735981

Title:
  Huawei ME936 mobile broadband can't connect

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