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Thread: How To: Manual Network Configuration without the need for Network Manager

  1. #11
    Join Date
    Oct 2007
    Beans
    8

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    I installed Mepis 6.5.02 on my Dell Inspiron 1721 last week. I gave Vista the boot and Mepis installed real easy and connected to my Linksys router w/no issues. Today, I downloaded Kubuntu 7.10 and tried to set it up to dual boot. I ran into some problems and finally threw my hands up and just installed it over Mepis. I couldn't get connected to the wireless router. Then I tried Mepis again and was able to dual boot both Kubuntu and mepis (happy days!), however, now I can't connect to the wireless on Mepis. Right now I am connected wired into the access point.

    I ran you scripts and here is what I saw....

    iwconfig wlan0 essid Gameserver
    root@1[/]# iwconfig
    lo no wireless extensions.

    eth0 no wireless extensions.

    wlan0 IEEE 802.11g ESSIDff/any
    Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
    Bit Rate=54 Mb/s Tx-Power:32 dBm
    RTS thrff Fragment thrff
    Encryption keyff
    Power Managementff
    Link Quality:0 Signal level:0 Noise level:0
    Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
    Tx excessive retries:0 Invalid misc:0 Missed beacon:0

    sit0 no wireless extensions.

    root@1[/]# ifconfig wlan0 down
    root@1[/]# dhclient -r wlan0
    Internet Systems Consortium DHCP Client V3.0.3
    Copyright 2004-2005 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/products/DHCP

    Listening on LPF/wlan0/00:1c:26:91:c7:ec
    Sending on LPF/wlan0/00:1c:26:91:c7:ec
    Sending on Socket/fallback
    root@1[/]# ifconfig wlan0 up
    root@1[/]# ifconfig wlan0 essid "Gameserver"
    essid: Unknown host
    ifconfig: `--help' gives usage information.
    root@1[/]# iwconfig wlan0 essid "Gameserver"
    root@1[/]# iwconfig wlan0 mode Managed
    root@1[/]# dhclient wlan0
    Internet Systems Consortium DHCP Client V3.0.3
    Copyright 2004-2005 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/products/DHCP

    Listening on LPF/wlan0/00:1c:26:91:c7:ec
    Sending on LPF/wlan0/00:1c:26:91:c7:ec
    Sending on Socket/fallback
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 2
    No DHCPOFFERS received.
    No working leases in persistent database - sleeping.
    root@1[/]#

    Please help!!!

  2. #12
    Join Date
    Mar 2007
    Location
    Denver, CO
    Beans
    7,554
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    What does
    iwlist scan show

    Make sure you take down your wired interface when trying to connect, such as
    sudo ifconfig eth0 down

    Also can you post
    lshw -C network

  3. #13
    Join Date
    Oct 2007
    Beans
    8

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    Here you go!

    root@2[eleni]# sudo ifconfig eth0 down
    root@2[eleni]# iwlist wlan0 scan
    wlan0 Scan completed :
    Cell 01 - Address: 00:13:46:1F:A4:3E
    ESSID:"default"
    Protocol:IEEE 802.11g
    Mode:Managed
    Frequency:2.462 GHz (Channel 11)
    Quality:7/100 Signal level:-91 dBm Noise level:-96 dBm
    Encryption keyff
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
    12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s
    48 Mb/s; 54 Mb/s
    Extra:bcn_int=100
    Extra:atim=0
    Cell 02 - Address: 00:1A:70:F6:C6:99
    ESSID:"Gameserver"
    Protocol:IEEE 802.11g
    Mode:Managed
    Frequency:2.437 GHz (Channel 6)
    Quality:93/100 Signal level:-36 dBm Noise level:-96 dBm
    Encryption keyn
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
    24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
    12 Mb/s; 48 Mb/s
    Extra:bcn_int=100
    Extra:atim=0

    root@2[eleni]# lshw -C network
    *-network
    description: Wireless interface
    product: Dell Wireless 1390 WLAN Mini-PCI Card
    vendor: Broadcom Corporation
    physical id: 0
    bus info: pci@0b:00.0
    logical name: wlan0
    version: 01
    serial: 00:1c:26:91:c7:ec
    width: 32 bits
    clock: 33MHz
    capabilities: bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=ndiswrapper driverversion=1.38 firmware=Broadcom,10/12/2006, 4.100.15.5 link=no multicast=yes wireless=IEEE 802.11g
    resources: iomemory:fe8fc000-fe8fffff irq:19
    *-network DISABLED
    description: Ethernet interface
    product: BCM4401-B0 100Base-TX
    vendor: Broadcom Corporation
    physical id: 0
    bus info: pci@03:00.0
    logical name: eth0
    version: 02
    serial: 00:1c:23:8a:f6:f8
    width: 32 bits
    clock: 33MHz
    capabilities: bus_master cap_list ethernet physical
    configuration: broadcast=yes driver=b44 driverversion=0.97 link=no multicast=yes
    resources: iomemory:fe5fe000-fe5fffff irq:22

  4. #14
    Join Date
    Mar 2007
    Location
    Denver, CO
    Beans
    7,554
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    What driver are you using bcmwl5??

    Once the eth0 interface is down, can you repeat the unencrypted manual commands for wlan0 and see what happens??

  5. #15
    Join Date
    Jul 2007
    Location
    Italy
    Beans
    111
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    Quote Originally Posted by Beggar View Post
    After upgrading to gutsy my WIFI broke after the first reboot. The output from the first command is:

    Code:
    darren@BeggarBox:~$ sudo lshw -C network
      *-network               
           description: Network controller
           product: PRO/Wireless 3945ABG Network Connection
           vendor: Intel Corporation
           physical id: 0
           bus info: pci@0000:0b:00.0
           version: 02
           width: 32 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list
           configuration: driver=ipw3945 latency=0 module=ipw3945
           ...
    Notice it is not given a logical name. How do I set it back to being eth1? /etc/iftab seems to be the best option, but I dont know the mac address. Any ideas?

    It doesn't seem like /etc/iftab is used anymore, back to square one....
    I remarked out # the last line in /etc/udev/rules.d/70-persistent-net.rules, rebooted and wireless started working. Seems upgrade replaced iftab but then setup rules.d with two interface names for the same mac address...

    Here the files before I remarked out the redundant entry in rules.d

    /etc/iftab

    Code:

    # This file is no longer used and has been automatically replaced.
    # See /etc/udev/rules.d/70-persistent-net.rules for more information.
    #

    # This file assigns persistent names to network interfaces.
    # See iftab(5) for syntax.

    ##eth0 mac 00:09:5d:15:60:23 arp 1
    #wlan0 mac 00:192:BB:50:59 arp 1

    /etc/udev/rules.d/70-persistent-net.rules

    Code:

    # This file maintains persistent names for network interfaces.
    # See udev(7) for syntax.
    #
    # Entries are automatically added by the 75-persistent-net-generator.rules
    # file; however you are also free to add your own entries.

    # Converted from /etc/iftab on upgrade
    SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:09:5d:15:60:23", ATTRS{type}=="1", NAME="eth0"

    # Converted from /etc/iftab on upgrade
    SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:192:BB:50:59", ATTRS{type}=="1", NAME="wlan0"


    # PCI device 0x8086:0x4222 (ipw3945)
    SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:19:d2:bb:50:59", NAME="eth1"
    Upgrade Gutsy to Hardy to Ibex Alpha on Dialogue Flybook V5 2.6.27-1.1 3945ABG

  6. #16
    Join Date
    Oct 2007
    Beans
    8

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    Same error!

    root@1[/]# ifconfig wlan0 up
    root@1[/]# iwconfig wlan0 essid "Gameserver"
    root@1[/]# iwconfig wlan0 mode Managed
    root@1[/]# dhclient wlan0
    Internet Systems Consortium DHCP Client V3.0.3
    Copyright 2004-2005 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/products/DHCP

    Listening on LPF/wlan0/00:1c:26:91:c7:ec
    Sending on LPF/wlan0/00:1c:26:91:c7:ec
    Sending on Socket/fallback
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 17
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 2
    No DHCPOFFERS received.
    No working leases in persistent database - sleeping.


    How do I find what the driver is?

  7. #17
    Join Date
    Mar 2007
    Location
    Denver, CO
    Beans
    7,554
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    Look in the /etc/ndiswrapper folder. There should be a subdirectory, and inside this subdirectory I believe is contained the driver.

    Are you broadcasting the essid on the router? No MAC filtering on the router correct??

  8. #18
    Join Date
    Aug 2007
    Beans
    6
    Distro
    Kubuntu 7.10 Gutsy Gibbon

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    What are the steps to connect to a network with hidden ESSID (WEP) using command line?

  9. #19
    Join Date
    Mar 2007
    Location
    Denver, CO
    Beans
    7,554
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    The commands are the same, however Im not sure if this will work. Its something about the drivers and Linux. So basically Im saying is that Im not certain ubuntu can connect to any router with hidden ssid broadcast.

  10. #20
    Join Date
    Oct 2007
    Beans
    8

    Re: How To: Troubleshoot your Wireless Network Connection - Connecting at Command Li

    eleni@1[~]$ cd /etc
    eleni@1[etc]$ cd ndis*
    eleni@1[ndiswrapper]$ ls
    bcmwl5 lsbcmnds

    The SSID is being broadcasted. Not sure about MAC filtering. I see a MAC address for the Router Lan settings and another for the Router Wan settings. Encryption is WEP. I can get to the point where it asks me for the key. I put it in and it gets to 28% complete and fails. I have tried connected to some unprotected wireless networks and the same thing happens. 28% and quits. My sound doesn't work either and that was working before I did the dual boot setup.

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