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I am very new to Linux and have tried looking through multiple answers in order to fix my problem. Previously I didn't even have a light running on my adapter but now the light is on when running Ubuntu but still I can only connect through Ethernet.

The wireless adapter I am using is the Link-com Archer T2U. I am running on Ubuntu 16.04 LTS on dual boot with windows.

If you have any advice it would be much appreciated.

  • lsusb command:

    Bus 001 Device 004: ID 0bda:5728 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 148f:761a Ralink Technology, Corp.

  • uname -r:

        4.4.0-22-generic

  • dkms status returns nothing.

  • lspci -knn | grep Net -A2 (doesn't appear to me my usb dongle):

    02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Lenovo BCM43142 802.11b/g/n [17aa:0611]
    Kernel driver in use: bcma-pci-bridge

  • lshw -c network:

     *-network
       description: Ethernet interface
       product: QCA8172 Fast Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 10
       serial: 20:1a:06:fe:ce:bc
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=10.133.203.211 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:32 memory:f0100000-f013ffff ioport:2000(size=128)
  *-network
       description: Network controller
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=bcma-pci-bridge latency=0
       resources: irq:17 memory:f0000000-f0007fff

  • rfkill list all:

    0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
David Foerster
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SkyPlus
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  • Please open up a terminal with ctrl + alt + t and edit your question with the output of lspci -knn | grep Net -A2 , lshw -c network and rfkill list all – Promille May 19 '16 at 13:05
  • @Promille Have updated the question with those outputs. Thanks – SkyPlus May 19 '16 at 13:10
  • Great. Check the accepted answer - maybe this is of help? http://askubuntu.com/questions/459654/drivers-for-broadcom-bcm43142-on-ubuntu-14-04-trusty-tahr – Promille May 19 '16 at 13:16
  • Hmm problem is that is of my intergrated network adapter not the new one I just bought :/ . I also get a wl key not available when trying to install that. – SkyPlus May 19 '16 at 13:20
  • I'm not quite sure what you mean. The problem is that the TP-Link Archer T2U doesn't find any Wi-Fi networks, right? I assume the "integrated network adapter" is the ethernet card, or do you have another wireless card as well? Also, there is linux drivers for the TP-Link on their homepage: http://www.tp-link.com/lb/download/Archer-T2U_V1.html#Driver – Promille May 19 '16 at 13:40
  • The Archer T2U is a USB dongle. The intergrated network adapter is the one that is built into my laptop, which I believe is broadcom. – SkyPlus May 19 '16 at 13:45
  • @Promille I also get the ra0 device not found error. – SkyPlus May 19 '16 at 14:02
  • Please run the network diagnostics and [edit] your question to include a link to the result. – David Foerster May 20 '16 at 10:19

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