Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

PROBLEM:

  1. The netbook can sometimes, sometimes not, connect to the internet mobile broadband 3G (or 2G GSM) via USB 3G modem.

  2. For it to connect to mobile broadband (when it can) I have, after sticking the modem into the USB port, and then enter the shell prompt with the command:

    / Sys/bus/usb-serial/drivers/option1/new_id

  3. Then I have to restart the network-manager:

    Service network-manager restart

    The shell reports the number xxxx this process.

  4. Entering the command:

    ps aux

    Then, I annotate the number yyyy of the process /sys/sbin/modem-manager

  5. Then I change the priority of these two processes for priority for maximum priority:

    renice -20 xxxx yyyy

  6. So, sometimes, I get a 3G connection. I do not know if he can connect on 2G (GSM), but it seems to me that when the connection changes from 3G to GSM she soon falls - but I am not sure.

    • When the connection is not achieved, the modem-manager is constantly trying. It can be seen that through the connection icon in the upper right side of the screen.
  7. Yesterday, Saturday 12/Jan/2012 I tried to connect to the internet and could not. The system detected an error and asked me if I wanted to send an error message. I accepted, but as I was not connected to the internet, I copied the details of the problem. Today, Sunday 13/Jan/2012 I got the connection and I sent you the error report. The error details are below (may have some copy error because the report is very large):

     Executable Path
        /usr/sbin/modem-manager
    
     Package
        modemmaneger 0.5.2.0ubuntu2
    
     Problem Type
        Crash
    
     Title
        modem-manager crashed with SIGSEGV in molloc()
    
     ApportVersion
        2.0.1-0ubuntu15.1
    
     Architeture
        i386
    
     CoreDump
    
     CrashCounter
        1
    
     Date
        sat Jan 12 08:28:36 2013
    
     Dependencies
    
     Disassembly
    
     DistroRelease
        Ubuntu 12.04
    
     InstallationMedia
        Ubuntu 12.04 LTS “Precise Pangolin” - Release i386 (20120817. . . . . 
    
     MarkForUpload
        True
    
     PackageArchiteture
        i386
    
     ProcCndline
        /usr/sbin/modem-manager
    
     ProcEnviron
        PATH=)custon, no user) 
        TERM=linux
    
     ProcMaps
    
     ProcStatus
    
     ProcVersionSignature
        Ubuntu 3.2.0-35.55 – generic-pae 3.2.34
    
     registers
    
     SegvAnalysis
        Segfault happened at: 0xb745b1b7:cmp 0x8(%edx),%ecx
        pc(0xb745b1b7) ok
        source”0x8(%edx)” (0x3f47455a) not located in a know VMA region (need readable region)!Destination”%ecx” ok
    
     SegvReason
        reading unknown VMA
    
     Signal 11
    
     SourcePackage
        modemmanager
    
     Stacktrace
    
     StacktraceTop
    
     Tags
        precise
    
     ThreadStacktrace
    
     Uname
        Linux 3.2.0-35-generic-pae i686
    
     UpgradeStatus
        No uppgrade log present (propably fresh install)
    
     UserGroups 
    
share|improve this question
1  
Welcome to Ask Ubuntu! Welcome to Ask Ubuntu! Please remember to format your post properly. This assures you have a high quality questions, which will receive the high quality answers it deserves. This is not a thesis: you do not need to have chapters. Including it all in one, clean explanation is better. I hope you question is solved, but in the future - please ask your questions like you would ask someone if you were talking to them. Thanks and good luck! –  Mochan Jan 13 '13 at 11:27
    
Have you tried using wvdial? –  nikhil Apr 15 '13 at 9:46

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.