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Thread: Network manager disabled on boot

  1. #1
    Join Date
    Jan 2016
    Beans
    2

    Network manager disabled on boot

    Im running LXLE (lubuntu based) dual boot with Windows 8.1
    Recently I installed 3.13.0-77-generic headers and everything was fine until I did a reboot and chose 3.13.0-65-generic. My network was disabled as this image indicates and everytime I do

    Code:
    $ sudo service network-manager status
    I get:
    Code:
    network-status stop/waiting
    I tried several solutions
    In /etc/network/interfaces I did:
    Code:
     # interfaces(5) file used by ifup(8) and ifdown(8)
     auto lo
     iface lo inet loopback
    
     auto eth0
     iface eth0 inet dhcp
    
     auto wlan0  iface wlan0 inet dhcp

    Also I deleted /var/lib/NetworkManager/NetworkManager.state and restarted but always get:
    Code:
     [main]
     NetworkingEnabled=true
     WirelessEnabled=true
     WWANEnabled=true  WimaxEnabled=true

    This is the output of ifconfig -a

    Code:
    eth0      Link encap:Ethernet  HWaddr a0:48:1c:e9:bd:23             UP BROADCAST MULTICAST  MTU:1500  Metric:1
               RX packets:0 errors:0 dropped:0 overruns:0 frame:0
               TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:1000 
               RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    
     lo        Link encap:Local Loopback  
               inet addr:127.0.0.1  Mask:255.0.0.0
               inet6 addr: ::1/128 Scope:Host
               UP LOOPBACK RUNNING  MTU:65536  Metric:1
               RX packets:1175 errors:0 dropped:0 overruns:0 frame:0
               TX packets:1175 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:0 
               RX bytes:106331 (106.3 KB)  TX bytes:106331 (106.3 KB)
    
     virbr0    Link encap:Ethernet  HWaddr ee:81:01:14:b8:75  
               inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
               UP BROADCAST MULTICAST  MTU:1500  Metric:1
               RX packets:0 errors:0 dropped:0 overruns:0 frame:0
               TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:0 
               RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    
     wlan0     Link encap:Ethernet  HWaddr 48:d2:24:ae:88:a5  
               UP BROADCAST MULTICAST  MTU:1500  Metric:1
               RX packets:0 errors:0 dropped:0 overruns:0 frame:0
               TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:1000             RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

    By the way the network is working fine on Windows.

    UPDATE
    I removed the 3.13.0-77 headers and nothing changed
    Last edited by howefield; January 31st, 2016 at 02:49 AM. Reason: reset font properties.

  2. #2
    Join Date
    Oct 2006
    Beans
    58,412

    Re: Network manager disabled on boot

    Thread moved to the "Ubuntu/Debian BASED" forum.

  3. #3
    Join Date
    May 2010
    Location
    uk
    Beans
    9,249
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Network manager disabled on boot

    Hi

    You don't want both your interfaces file and network manager trying to manage the same interfaces, so those changes to your interfaces file need to be removed.

    Open a terminal and copy and paste this into it. It'll remove those entries.

    Code:
    sudo sed -i '/eth0/d;/wlan0/d' /etc/network/interfaces
    As for the file

    Code:
    /var/lib/NetworkManager/NetworkManager.state
    you want network-manager to create that each time.

    So, i suspect the problem lies elsewhere.

    To help, can you post the the output of (capital A below)

    Code:
    lspci -nnk | grep -iA2 wireless
    Next, open a terminal and type

    Code:
    tail -n0 -f /var/log/syslog
    Open up a second terminal and type

    Code:
    sudo service network-manager start
    Post the output that appears in the first terminal window into your next post.

    Hopefully that'll give people something to start with.

    Kind regards
    If you believe everything you read, you better not read. ~ Japanese Proverb

    If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed. - Mark Twain

    Thinking about becoming an Ubuntu Member?

  4. #4
    Join Date
    May 2010
    Location
    uk
    Beans
    9,249
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Network manager disabled on boot

    Hi

    Take a look at this thread and the link posted in it.

    http://ubuntuforums.org/showthread.p...7#post13431787

    Kind regards
    If you believe everything you read, you better not read. ~ Japanese Proverb

    If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed. - Mark Twain

    Thinking about becoming an Ubuntu Member?

  5. #5
    Join Date
    Jan 2016
    Beans
    2

    Re: Network manager disabled on boot

    Great that solved it!
    Thank you so much

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