Ubuntu – Asus X550L Weak Wifi signal ubuntu 14.04


I'm new to Ubuntu OS. I've installed ubuntu 14.04 x64 on my ASUS X550LC laptop yesterday.
The wifi signal is weak & getting disconnected sometimes.

Searched all over the web but many site/forums has discussed with Atheros network adapter but the one I have is Ralink RT3290.

This what my iwconfig gives:

ppp0      no wireless extensions.
eth0      no wireless extensions.
lo        no wireless extensions.
usbpn0    no wireless extensions.
wlan0     IEEE 802.11bgn  ESSID:off/any  
      Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
      Retry  long limit:7   RTS thr:off   Fragment thr:off
      Power Management:off

Best Answer

  • We need to install the 3290 driver go here and download the driver then:

    We need to install some prerequisites to be able to compile the new driver.

    sudo apt-get install --reinstall linux-headers-generic linux-headers-$(uname -r) build-essential dkms

    We need to change to the directory the driver was downloaded too which should be the downloads folder.

    Please copy and paste all commands one line at a time for accuracy:

    cd Downloads

    Now untar the driver to /usr/src directory

     sudo tar -xf rt3290sta- -C /usr/src   

    then do:

    sudo dkms install -m rt3290sta -v --force
    echo "blacklist rt2800pci" | sudo tee -a /etc/modprobe.d/blacklist.conf
    echo "blacklist rt2x00pci" | sudo tee -a /etc/modprobe.d/blacklist.conf

    Reboot. The directions to install come from the readme file of the driver and my own.

    Now, check the settings in the router. WPA2-AES is preferred; not WPA and WPA2 mixed mode and certainly not TKIP. Second, if your router is capable of N speeds, I have better luck with a channel width of 20 MHz in the 2.4 GHz band instead of automatic 20/40 MHz.

    I also have better luck with a fixed channel, either 1, or 11, rather than automatic channel selection. After making these changes, reboot the router.

    Next, I recommend that your regulatory domain be set explicitly. Check yours:

    sudo iw reg get

    If you get 00, that is a one-size-fits-all setting. Find yours here: Country Code Then set it temporarily:

    sudo iw reg set IS

    Of course, substitute your country code if not Iceland. Set it permanently:

    gksudo gedit /etc/default/crda

    Use nano or kate or leafpad if you don't have the text editor gedit.

    Change the last line to read:


    Proofread carefully, save and close the text editor.

    Next, I'd set IPv6 to Ignore in Network Manager: IPV6 setting This example is for ethernet, but you want wireless.

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