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Thread: Unstable Internet connection

  1. #1
    Join Date
    Feb 2012
    Location
    Skopje, Macedonia
    Beans
    48
    Distro
    Ubuntu 12.04 Precise Pangolin

    Unstable Internet connection

    I want to ask why Ubuntu Server 12.04 is very unstable concerning its connection to Internet. Once I am starting it has Internet connection, than reboot it, and all of a sudden it can not connect. I really dont understand. If someone else faces this kind of problems please write down. Thanx

  2. #2
    Join Date
    Nov 2008
    Location
    Storybrooke
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Unstable Internet connection

    We will need some information in order to help you diagnose the issue.

    What kind of network is the server connected to? DHCP/Static Addressing/Server at Datacenter?

    Also, post the output of
    Code:
    lspci
    ifconfig
    Ubuntu Forums Moderation Staff
    Okay then. We're relying on mirror dust and fairies but now we have a plan which is progress - Emma

  3. #3
    Join Date
    Oct 2011
    Location
    Canada
    Beans
    951
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Unstable Internet connection

    Laptop or desktop? Wireless or wired connection?

    Need a lot more info but it sounds like user error so far...
    613websites.com Canadian Web Design and Hosting

  4. #4
    Join Date
    Feb 2012
    Location
    Skopje, Macedonia
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    48
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Unstable Internet connection

    Hi!
    Here is the ifconfig output:

    eth0 Link encap:Ethernet HWaddr 00:19:66:44:1e:2b
    inet addr:192.168.0.128 Bcast:192.168.0.255 Mask:255.255.255.0
    inet6 addr: fe80::219:66ff:fe44:1e2b/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:2847 errors:0 dropped:0 overruns:0 frame:0
    TX packets:1436 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:1633632 (1.6 MB) TX bytes:192532 (192.5 KB)
    Interrupt:40 Base address:0xe000

    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:16436 Metric:1
    RX packets:16 errors:0 dropped:0 overruns:0 frame:0
    TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:1296 (1.2 KB) TX bytes:1296 (1.2 KB)

    I am in a dhcp environment.
    And lspci output:

    00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
    00:01.0 PCI bridge: Intel Corporation 82945G/GZ/P/PL PCI Express Root Port (rev 02)
    00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
    00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01)
    00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 01)
    00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 01)
    00:1d.0 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01)
    00:1d.1 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01)
    00:1d.2 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01)
    00:1d.3 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01)
    00:1d.7 USB controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01)
    00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
    00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
    00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
    00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA Controller [IDE mode] (rev 01)
    00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01)
    01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
    04:02.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev 46)
    05:00.0 VGA compatible controller: NVIDIA Corporation G73 [GeForce 7300 GT] (rev a1)

    This time I didn't have any problem with Internet. I've just started the Ubuntu and started Mozzila... But still on the status bar in the right upper corner of the desktop, when I click the network icon, the wired network menu is inactive.
    Thanx

  5. #5
    Join Date
    Nov 2007
    Location
    Newry, Northern Ireland
    Beans
    1,258

    Re: Unstable Internet connection

    Are you running server edition, or desktop edition?

    If server edition with a desktop installed on top, Network manager is probably interfering with the config in /etc/network/interfaces

    Can you confirm your setup?
    Can't think of anything profound or witty.
    My Blog: http://gonzothegeek.blogspot.co.uk/

  6. #6
    Join Date
    Feb 2012
    Location
    Skopje, Macedonia
    Beans
    48
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Unstable Internet connection

    Yes, it is a server distro with a desktop installed on top... So what do I do next... This time for example I started Ubuntu and there was active Internet connection...

  7. #7
    Join Date
    Nov 2007
    Location
    Newry, Northern Ireland
    Beans
    1,258

    Re: Unstable Internet connection

    As you are using it as a server, I presume you want it to have a static IP address and control the networking from /etc/network/interfaces so if this is correct, you will need to uninstall network manager
    Code:
    sudo apt-get purge network-manager
    and probably the Gnome Applet too to avoid annoying error messages
    Code:
    sudo apt-get purge nm-applet
    You will also need to edit the /etc/network/interfaces file to reflect your desired setup.
    Can't think of anything profound or witty.
    My Blog: http://gonzothegeek.blogspot.co.uk/

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