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Thread: Lost Wifi after upgrading to 11.04,MSI U135

  1. #1
    Join Date
    Feb 2006

    Lost Wifi after upgrading to 11.04,MSI U135

    I can see my network but when trying to connect after a while I get a pop-up asking "authentication required...". If I re-enter the password the same thing happens again. The network worked fine before upgrading to 11.04 and still works on other equipment.
    The network LED can be switched on/off by pressing Fn-F11, but this does not help. Disabling and re-enabling the wireless does not help.
    The network card is a Ralink RT3090, the PC a MSI U135

    ifconfig shows:
    wlan0 Link encap:Ethernet HWaddr 40:61:86:42:f5:84
    RX packets:6 errors:0 dropped:0 overruns:0 frame:0
    TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:522 (522.0 B) TX bytes:2098 (2.0 KB)

    And iwconfig shows:

    lo no wireless extensions.

    eth0 no wireless extensions.

    wlan0 IEEE 802.11bgn ESSID:"Milbak"
    Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
    Tx-Power=20 dBm
    Retry long limit:7 RTS thrff Fragment thrff
    Power Managementn

    any help would be appreciated, I'd like not to have to re-install 10.10.

  2. #2
    Join Date
    Feb 2006

    Re: Lost Wifi after upgrading to 11.04,MSI U135

    Update: I got it working by adding the following line to /etc/modprobe.d/blaclist.conf

    blacklist rt2800pci

    and restarted. Had me sweating there for a while...

  3. #3
    Join Date
    Mar 2009
    Perth, Australia
    Ubuntu Studio 11.04 Natty Narwhal

    Re: Lost Wifi after upgrading to 11.04,MSI U135

    im having this exact same problem with msi wind u100+ live cd works fine. i reinstalled 10.10 and that was fine. i quad boot and both win7 and snow leopard work fine but funnily enough after a recent update of linux mint debian edition that started droping out too. im going to try your fix now. thanks for posting

    **edit*** I just wanted to add: The above paragraph was sent via my ipod, and I am now back online after editing /etc/modprobe.d/blacklist.conf like your suggestion.

    Eureka! Cheers mate!
    Last edited by pSYcl0Ne; May 8th, 2011 at 11:38 AM. Reason: backonline

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