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Thread: Connection problems and low bandwidth w/ wireless

  1. #1

    Default Connection problems and low bandwidth w/ wireless

    Hello all,
    I've been working on this problem for a week by reading forum listing and tutorials. I'm at the end of my rope.

    I have and ACER TravelMate 4670 with an internal modem Pro/Wireless 3945ABG. After the latest kernel update, I lost connection through the linux driver iwl3945. I've installed ndiswrapper and with the WinXP driver w39n51, the modem is now detected and attempts to connect to my 2Wire router. But, it still disconnects.

    I'm a newbie. Could someone give me a hand please? I will be very grateful.

    -JG

  2. #2

    Default Re: Connection problems and low bandwidth w/ wireless

    Here are some settings which I found:

    john-laptop:~ # iwconfig wlan0
    wlan0 IEEE 802.11g ESSIDff/any
    Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
    Bit Rate:54 Mb/s
    RTS thr:35613 B Fragment thr:35613 B
    Encryption keyff
    Power Management max timeout:0us mode:All packets received
    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


    john-laptop:~ # chkconfig
    SuSEfirewall2_init on
    SuSEfirewall2_setup on
    aaeventd on
    acpid on
    alsasound on
    atd off
    auditd on
    autofs off
    autoyast off
    avahi-daemon on
    avahi-dnsconfd off
    bgpd off
    bluetooth off
    bluetooth-coldplug on
    chargen off
    chargen-udp off
    clamav-milter on
    clamd on
    cron on
    cups on
    cups-lpd off
    daytime off
    daytime-udp off
    dbus on
    ddclient off
    discard off
    discard-udp off
    dnsmasq off
    earlysyslog on
    earlyxdm on
    echo off
    echo-udp off
    fbset on
    fetchmail off
    freshclam on
    gpm off
    haldaemon on
    irda off
    java.binfmt_misc on
    joystick off
    kbd on
    kexec off
    laptop-mode on
    lirc off
    mdadmd off
    microcode.ctl off
    multipathd off
    netstat off
    network on
    network-remotefs on
    nfs on
    nmb on
    nscd on
    ntp on
    open-iscsi off
    openct off
    openvpn off
    ospf6d off
    ospfd off
    pcscd off
    pm-profiler off
    postfix on
    powerd off
    racoon off
    radvd off
    random on
    raw off
    ripd off
    ripngd off
    rpasswdd off
    rpcbind on
    rpmconfigcheck off
    rsync off
    rsyncd off
    sane-port off
    servers off
    services off
    setserial off
    skeleton.compat off
    smartd on
    smb on
    smbfs off
    smolt off
    smpppd on
    spamd on
    splash on
    splash_early on
    squid off
    sshd on
    stopblktrace on
    swat off
    syslog on
    systat off
    tftp off
    time off
    time-udp off
    uuidd off
    vnc off
    waitfornm off
    xdm on
    xfs off
    xinetd off
    ypbind off
    zebra off

  3. #3
    Join Date
    Oct 2008
    Location
    Manchester
    Posts
    128

    Default Re: Connection problems and low bandwidth w/ wireless

    Hi,

    have you any security on your wireless network ?? You need to enter the wep/wpa key into your config for your wireless card.

    This can be done via network manager if using KDE.

    hth
    J
    Linux# makes_a_network_feel_good.sh

    Linux and BSD solutions

  4. #4

    Default Re: Connection problems and low bandwidth w/ wireless

    Yes, both network manager and ifup are configured with Wep keys as Open Wep connections. Still no reliable connection.

  5. #5

    Default Re: Connection problems and low bandwidth w/ wireless

    Would posting more data to this forum help to figure out what is wrong? What would you like?

  6. #6

    Default Re: Connection problems and low bandwidth w/ wireless

    Password:
    john-laptop:~ # sudo ifconfig wlan0 down
    john-laptop:~ # sudo ifconfig wlan0 up
    john-laptop:~ # sudo iwconfig wlan0 essid 2Wire398 key off
    john-laptop:~ # ping google.com
    ping: unknown host google.com
    john-laptop:~ # sudo dhclient wlan0
    Internet Systems Consortium DHCP Client V3.1.1
    Copyright 2004-2008 Internet Systems Consortium.
    All rights reserved.
    For info, please visit http://www.isc.org/sw/dhcp/

    Listening on LPF/wlan0/00:13:02:1c:c9:24
    Sending on LPF/wlan0/00:13:02:1c:c9:24
    Sending on Socket/fallback
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
    DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
    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.
    john-laptop:~ #

  7. #7
    Join Date
    Jun 2008
    Location
    Kansas City Area, Missouri, USA
    Posts
    7,236

    Default Re: Connection problems and low bandwidth w/ wireless

    On 10/20/2009 02:56 PM, gronauj wrote:
    >
    > Password:
    > john-laptop:~ # sudo ifconfig wlan0 down
    > john-laptop:~ # sudo ifconfig wlan0 up
    > john-laptop:~ # sudo iwconfig wlan0 essid 2Wire398 key off
    > john-laptop:~ # ping google.com
    > ping: unknown host google.com
    > john-laptop:~ # sudo dhclient wlan0
    > Internet Systems Consortium DHCP Client V3.1.1
    > Copyright 2004-2008 Internet Systems Consortium.
    > All rights reserved.
    > For info, please visit http://www.isc.org/sw/dhcp/
    >
    > Listening on LPF/wlan0/00:13:02:1c:c9:24
    > Sending on LPF/wlan0/00:13:02:1c:c9:24
    > Sending on Socket/fallback
    > DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5
    > DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
    > DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
    > DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
    > DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
    > 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.
    > john-laptop:~ #


    Did you actually get a wireless connection? What does 'iwconfig' show?

  8. #8

    Default Re: Connection problems and low bandwidth w/ wireless

    Hello there, here is the iwconfig that you requested.

    Password:
    john-laptop:~ # iwconfig
    lo no wireless extensions.

    wlan0 IEEE 802.11g ESSIDff/any
    Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
    Bit Rate:54 Mb/s
    RTS thr:35613 B Fragment thr:35613 B
    Encryption keyff
    Power Management max timeout:0us mode:All packets received
    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

    eth0 no wireless extensions.

    john-laptop:~ #

    It never really connects. KwifiManager shows a connection speed of 54 MBit/s but no access point is shown and the local IP is unavailable. This is shown despite my adding of the router's access point to the ifup and Network Manager settings.

    Thanks,
    JG

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