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Thread: How to install the Adapter Wi-Fi TP-LINK TL-WN721N (AR9271 0cf3 9271)

  1. #1
    Join Date
    Apr 2013
    Beans
    2

    Unhappy How to install the Adapter Wi-Fi TP-LINK TL-WN721N (AR9271 0cf3 9271)

    Hi everyone!

    Just bought a Wi-Fi Adapter TP-LINK TL-WN721N and am having trouble installing it on Ubuntu.


    1) My sistem:

    $ uname -a
    Linux wfs 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:32:08 UTC 2012 i686 athlon i686 GNU/Linux

    $ cat /etc/lsb-release
    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=12.10
    DISTRIB_CODENAME=quantal
    DISTRIB_DESCRIPTION="Ubuntu 12.10"


    2) The hardware is recognized for the system:

    $ lsusb
    Bus 001 Device 004: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n


    3) I tryed install with the procedure bellow:

    $ sudo apt-get -y install build-essential linux-headers-generic linux-headers-`uname -r`

    $ mkdir htc_9271
    $ cd htc_9271

    $ wget wireless.kernel.org/download/compat-wireless-2.6/compat-wireless.tar.bz2
    $ tar -xvf compat-wireless.tar.bz2

    $ cd compat*
    $ sudo make
    $ sudo make install
    $ cd ..

    $ wget wireless.kernel.org/download/htc_fw/1.3/htc_9271.fw
    $ sudo cp htc_9271.fw /lib/firmware

    $ sudo modprobe ath9k_htc


    4)the module was installed:

    $ modinfo ath9k_htc

    filename: /lib/modules/3.5.0-17-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_htc.ko
    firmware: htc_9271.fw
    firmware: htc_7010.fw
    description: Atheros driver 802.11n HTC based wireless devices
    license: Dual BSD/GPL
    author: Atheros Communications
    srcversion: A75D155EBE2E5D10290B476
    alias: usb:v0CF3p20FFd*dc*dsc*dp*ic*isc*ip*
    alias: usb:v04DAp3904d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0411p017Fd*dc*dsc*dp*ic*isc*ip*
    alias: usb:v083ApA704d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0846p9018d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0CF3p7010d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v1668p1200d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0CF3p7015d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v057Cp8403d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0CF3pB003d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v040Dp3801d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v04CAp4605d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v13D3p3350d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v13D3p3349d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v13D3p3348d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v13D3p3346d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v13D3p3328d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v13D3p3327d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v07D1p3A10d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0846p9030d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0CF3p1006d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v0CF3p9271d*dc*dsc*dp*ic*isc*ip*
    depends: ath9k_hw,ath9k_common,mac80211,ath,cfg80211
    intree: Y
    vermagic: 3.5.0-17-generic SMP mod_unload modversions 686
    parm: debugebugging mask (uint)
    parm: nohwcryptisable hardware encryption (int)


    5) but didn't work, someone know what I have to do??

  2. #2
    Join Date
    Sep 2011
    Location
    Pennsylvania, U.S.A.
    Beans
    2,582
    Distro
    Ubuntu Development Release

    Re: How to install the Adapter Wi-Fi TP-LINK TL-WN721N (AR9271 0cf3 9271)

    Did you try just connecting without installing anything? I have a Netgear WNA1100, it just connects, no added anything. That may not be true of all AR9271 adapters, I only have experience with the one. Some people find it necessary to disable hardware encryption on ath9k adapters. I think mine performs better with hardware encryption disabled but it will connect with hardware encryption enabled.

  3. #3
    Join Date
    Apr 2013
    Beans
    2

    Re: How to install the Adapter Wi-Fi TP-LINK TL-WN721N (AR9271 0cf3 9271)

    Yes, I've tried. But there is no recognized network interface Wi-Fi, only the two Ethernet.

    $ lsusb
    Bus 001 Device 005: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n

    $ iwconfig
    lo no wireless extensions.

    eth0 no wireless extensions.

    eth1 no wireless extensions.

    $ ifconfig -a
    eth0 Link encap:Ethernet Endereço de HW 08:00:27:5f:68:7d
    inet end.: 192.168.56.2 Bcast:192.168.56.255 Masc:255.255.255.0
    endereço inet6: fe80::a00:27ff:fe5f:687d/64 Escopo:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1
    pacotes RX:1239 erros:0 descartados:0 excesso:0 quadro:0
    Pacotes TX:816 erros:0 descartados:0 excesso:0 portadora:0
    colisões:0 txqueuelen:1000
    RX bytes:174842 (174.8 KB) TX bytes:450455 (450.4 KB)

    eth1 Link encap:Ethernet Endereço de HW 08:00:27:c0:92:e9
    inet end.: 10.0.3.15 Bcast:10.0.3.255 Masc:255.255.255.0
    endereço inet6: fe80::a00:27ff:fec0:92e9/64 Escopo:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1
    pacotes RX:1266 erros:0 descartados:0 excesso:0 quadro:0
    Pacotes TX:951 erros:0 descartados:0 excesso:0 portadora:0
    colisões:0 txqueuelen:1000
    RX bytes:881741 (881.7 KB) TX bytes:74449 (74.4 KB)

    lo Link encap:Loopback Local
    inet end.: 127.0.0.1 Masc:255.0.0.0
    endereço inet6: ::1/128 Escopo:Máquina
    UP LOOPBACK RUNNING MTU:16436 Métrica:1
    pacotes RX:414 erros:0 descartados:0 excesso:0 quadro:0
    Pacotes TX:414 erros:0 descartados:0 excesso:0 portadora:0
    colisões:0 txqueuelen:0
    RX bytes:44321 (44.3 KB) TX bytes:44321 (44.3 KB)

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