When I plug the modem I have a mobile broadband option in network menu bar, and I add new mobile broadband connection, and everything is fine. but, when I try to connect it, suddenly the Mobile broadband option in network menu bar dissapear . . so I have to unplug it and plug it again in my laptop to display the mobile broadband option. . . I connect it again, and dissapear again. . . how can I connect to my mobile broadband??

I'm using aego modem. under Ubuntu 14.04 LTS Operating system

  • Did you try connecting from command line? – VenkiPhy6 Apr 21 '14 at 9:30
  • No, I didn't. I don't know the command – Ujang Karnadi Apr 21 '14 at 9:33
  • Ok. I will post it as answer. Try it. I wont guarantee that it will work, though. – VenkiPhy6 Apr 21 '14 at 9:34
  • I'm not too sure it would help but its worth having a look through on this topic. – AzkerM May 7 '14 at 4:58
  • I've similar problem and solution : 1. Open terminal and run sudo stop modemmanager. 2.Plugin modem and wait for 20 seconds. 3. Run sudo start modemmanager. Now, Within 20 second, new/existing connection appears in notification area. And you are able to connect (permanently/not-disapperead)! – Pandya Oct 11 '14 at 9:47

You may try connecting from the command line. First create a new mobile broadband connection. To do so:-

  • Connect your modem. Then select 'New Mobile Broadband connection...' from the panel(aka menu bar) as shown below.

enter image description here

  • Then in the following window press continue.
  • Then select your country.
  • In the subsequent window select your ISP.
  • Then press 'Continue' and then 'Apply'.

Now open the terminal with Ctrl+Alt+t . Then type the following command :-

nmcli connection

An output similar(not exactly) to the one below will be shown :-

NAME                      UUID                                   TYPE              TIMESTAMP-REAL                    
Wired connection 1        ef7249c9-13bf-4d4c-9d5e-14c79371be9e   802-3-ethernet    Monday 21 April 2014 11:23:20 AM IST
BSNL/CellOne New GPRS/3G  a1f89d7a-12d0-4ef8-b76d-cb6e31b11697   gsm               Monday 21 April 2014 03:22:39 PM IST

As you can see the output displays all the connections that you have created. Now in the above case if I have to connect with 'BSNL/CellOne New GPRS/3G' then I will type the following command:-

nmcli connection up uuid a1f89d7a-12d0-4ef8-b76d-cb6e31b11697

As you can see I have typed the UUID of the connection that I want to connect to. So according to your connection you have got to give the UUID in the above command.

  • Thanks venki. but. . . still not working. . . maybe I have to change my modem. – Ujang Karnadi Apr 21 '14 at 13:58
  • @UjangKarnadi Sorry I couldn't help. But don't go for a new modem so quickly. Be patient and wait for more answers. Then go for a new one.. – VenkiPhy6 Apr 21 '14 at 14:01
  • It's OK. . . The good think is I can know more about command line. . – Ujang Karnadi Apr 21 '14 at 15:46
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    yesterday I bought huawei modem, and try it with ubuntu, and it work. . . I think my problem is with my modem that doesn't support for ubuntu. . – Ujang Karnadi Apr 25 '14 at 12:53

which device you are trying to connect ? make sure that device connected properly! if you are trying a USB modem then please go through this post -> here's how to connect a USB modem to ubuntu

  • Hi and welcome to AskUbuntu. Answers that contain just a link are generally considered to be comments. For a post to be considered an answer it should have enough "persistent" information to provide a solution. ie. the link might become unavailable, so your answer should provide enough information to reproduce the solution described in the linked article. Please edit your answer to make it so. – hmayag Apr 21 '14 at 11:38
  • and the link is broken. – Roland Kofler Jun 4 '14 at 6:10

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