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I have been successful in connecting to the Internet using a Pantech UML290-VW using the Mobile Broadband setup wizard (vzwinternet) in Ubuntu 14.10. My settings are as follows:

Number: *99#
Username: blank
Password: blank
APN: vzwinternet

My problem is that when the computer is restarted or shut down, upon booting again the connection refuses to work - immediately says "You have been disconnected." It is NOT set to connect automatically, although I tried this and the result was the same. If I unplug the dongle from the computer and then plug it back in (with the computer running), everything works as expected.

Any idea as to what might be causing this odd behaviour? I do not see any obvious error messages anywhere, not sure if there is some log information available.

Additional info:

  • Auto-login is set, so I cannot check the behaviour there
  • Output of ls /etc/NetworkManager/system-connections/ is:

    AndroidAP (to be able to connect to the Internet without the dongle))

    Verizon 4G LTE Contract 1 (the problem connection)

Output of Verizon 4G LTE Contract 1 is: http://paste.ubuntu.com/10142892/

Output of dsmesg : http://paste.ubuntu.com/10142950/

After Suggested Changes & Reboot

After rebooting, the connection is visible in the networking drop-down menu but when I select it, immediately disconnected (same as initial problem). Before trying to connect I copied the command output requested earlier: dmesg before unplugging dongle and dmesg after unplugging/re-inserting. Also, here are the contents of Verizon 4G LTE Contract 1 after rebooting: http://paste.ubuntu.com/10144371/

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    On the dsmesg output the dongle is referenced on line 99, Pantech UML290
    – NightMICU
    Feb 9, 2015 at 14:23
  • Could you edit the /etc/NetworkManager/system-connections/Verizon 4G LTE Contract 1 file and remove the line permissions=user:tevfd:; and set autoconnect=true instead of false and reboot? (and report back, please?) ;-)
    – Fabby
    Feb 9, 2015 at 15:21
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    Done. I'm actually working on it remotely, the machine is about 30 minutes from my location - so if it doesn't come back on, we will know it did not work lol
    – NightMICU
    Feb 9, 2015 at 15:33
  • Looks like my TeamViewer connection did not come back up, so I am assuming that it is still offline after reboot. I will try to head out there shortly, within the hour.
    – NightMICU
    Feb 9, 2015 at 15:35
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    @Fabby see updates, essentially no change. I did notice that the connection file was different than it was before reboot, the autoconnect field is gone. I also saw a few errors at the end of dmesg before I unplugged and re-inserted the dongle.
    – NightMICU
    Feb 9, 2015 at 16:19

1 Answer 1

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Unfortunately, you've hit a bug that is fixed in Debian but not released in Ubuntu yet.

Subscribe to the bug tracking list so you will be informed when a bug fix is released...

The only two thing you can do for now is the work-around you've already found:

  1. Remove and re-insert the modem physically.
  2. After the modem goes online (and fails), disconnect from the connection (don't unplug the modem), disable mobile broadband, re-enable it, and connect again. Credit for this workaround: SF
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  • And please, even when the answer is "there seems to be a bug", don't forget to click the grey check-mark under the "0" at the left of this text, which means "yes, this answer is valid"! :-(
    – Fabby
    Feb 9, 2015 at 16:28
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    First, really appreciate all of your help! But the bug seems to be a bit different than what I am seeing. It's not that it will not autoconnect, it is that it will not connect at all unless I unplug it and plug it back in after the machine boots. It keeps saying "Disconnected. You are now offline" when I attempt to connect. Would this still be the same bug?
    – NightMICU
    Feb 9, 2015 at 16:31
  • Reading it again... IMHO, yes. From the comments: "autoconnection for mobile broadband is not yet supported."
    – Fabby
    Feb 9, 2015 at 16:37
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    :D :D :D Telepathy!
    – Fabby
    Feb 9, 2015 at 16:55
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    Thanks, familiar with Stack Exchange ;) Accepted your answer AND gave you a +1 for all your help, but please let me know if you come across any other potential causes for this. While the bug does sound similar, it is not 100% what I am seeing. I may also try some of the scripts people have added to that page. Thanks again!
    – NightMICU
    Feb 9, 2015 at 16:55

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