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Thread: AR9380 Variant - Very slow connection speeds

  1. #1
    Join Date
    Mar 2012
    Beans
    11

    AR9380 Variant - Very slow connection speeds

    I'm running Ubuntu 12.04 LTS. My new build uses a TP-LINK TL-WDN4800 PCI-E wireless adapter. Apparently, the chipset is an Atheros AR9380. I'm getting extremely slow connection speeds, whereas everything is super fast in Windows.

    Any help would be much appreciated.

  2. #2
    Join Date
    Feb 2007
    Beans
    Hidden!
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: AR9380 Variant - Very slow connection speeds

    Turns out that you answered this yourself, it seems? I found your review on Neweegg (http://www.newegg.com/Product/Produc...82E16833704133), which I'll repeat here for any other poor sap that stumbles into this thread.

    In terminal, type:
    sudo -s gksu gedit /etc/modprobe.d/ath9k.conf
    Then in the text file that opens, add the following line:
    options ath9k nohwcrypt=1
    Save the file, close it, and reboot. Connection speeds should be good now.
    I'm going to buy this card tonight, so I hope that this works for me too...

  3. #3
    Join Date
    Aug 2009
    Beans
    65

    Re: AR9380 Variant - Very slow connection speeds

    did this fix work for your wireless card???
    I'm just wondering as I am looking to buy one of these cards.

    bash321
    bash321

  4. #4
    Join Date
    Feb 2007
    Beans
    Hidden!
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: AR9380 Variant - Very slow connection speeds

    Actually I don't think it was even needed. It worked great right away for me. I tried apply these commands and the performance remained the same (which is very good). Although I went ahead and left that line in the file, so maybe if I kept using it I would have eventually had problems without it.

  5. #5
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    22,901
    Distro
    Ubuntu 17.10 Artful Aardvark

    Re: AR9380 Variant - Very slow connection speeds

    Hi, most of the time those commands are need for that driver and it usually fixes the issue.
    Thanks

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