Ubuntu – Netgear A6100 on ubuntu 14.04

14.04driversnetworkingusb

I am attempting to use a Netgear A6100 wireless USB WIFI adapter on my Sony Vaio laptop with Ubuntu 14.04. The pre-installed wireless card lost bars of signal from my wifi router after installing Ubuntu, so I bought this USB wireless adapter to solve my connection issues.

This is the output for lsusb:

Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 5986:02d3 Acer, Inc 
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 3938:1032  
Bus 003 Device 002: ID 0846:9052 NetGear, Inc. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

This is the output for sudo lshw -c network:

*-network               
   description: Wireless interface
   product: AR9485 Wireless Network Adapter
   vendor: Qualcomm Atheros
   physical id: 0
   bus info: pci@0000:01:00.0
   logical name: wlan0
   version: 01
   serial: 08:ed:b9:b8:88:cb
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
   configuration: broadcast=yes driver=ath9k driverversion=3.16.0-46-generic firmware=N/A ip=192.168.1.11 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
   resources: irq:16 memory:c0600000-c067ffff memory:c0680000-c068ffff
*-network
   description: Ethernet interface
   product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:03:00.0
   logical name: eth0
   version: 07
   serial: 30:f9:ed:af:9f:a4
   size: 10Mbit/s
   capacity: 1Gbit/s
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
   resources: irq:43 ioport:2000(size=256) memory:c0404000-c0404fff memory:c0400000-c0403fff
*-network
   description: Wireless interface
   physical id: 1
   bus info: usb@3:2
   logical name: wlan1
   serial: 6c:b0:ce:22:ed:3a
   capabilities: ethernet physical wireless
   configuration: broadcast=yes driver=rtl8812au driverversion=3.16.0-46-generic firmware=N/A link=no multicast=yes wireless=unassociated

Best Answer

  • Your device uses the rare and elusive driver 8812au. Please get a temporary wired ethernet or similar connection, open a terminal and do:

    sudo apt-get update
    sudo apt-get install linux-headers-generic build-essential git
    git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git
    cd ~/rtl8812AU_8821AU_linux
    make
    sudo make install
    sudo modprobe 8812au
    

    Your wireless should now be working.

    When Update Manager installs a later linux-image, recompile:

    cd rtl8812AU_8821AU_linux/
    make clean
    make
    sudo make install
    sudo modprobe 8812au
    

    Please retain the file and these instructions for that time.

    We probably need to blacklist the internal driver to keep from interfering. Please tell me its driver from the command:

     sudo lshw -C network
    

    I will then edit this answer to provide instructions.

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