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Thread: Edimax 7811-Un USB Wireless Adapter

  1. #1
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    Edimax 7811-Un USB Wireless Adapter

    Hey. So recently, I got a new wireless adaptor for my PC. It's an old Dell E310, and I tried using it on such, but it didn't work. I couldn't find much on the manufacturer's website that would help. Could anyone help me out here?

    Oh, also, the adaptor did come with a disk.

  2. #2
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    Re: Dell E310 Desktop Edimax USB Wireless Adapter won't work

    Which version of Buntu are you using?
    About problems due to upgrading
    Bringing old hardware back to life.
    Please visit Quick Links -> Unanswered Posts

  3. #3
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    Re: Dell E310 Desktop Edimax USB Wireless Adapter won't work

    I'm using 13.10.

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    Re: Edimax USB Wireless Adapter

    - and the full name of the Edimax adapter?

    In general you should post much more information. Noone can help you based upon what has been posted so far.
    About problems due to upgrading
    Bringing old hardware back to life.
    Please visit Quick Links -> Unanswered Posts

  5. #5
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    Re: Edimax USB Wireless Adapter

    Please open a terminal with CTRL+ALT+T and show the outputs of these commands:
    Code:
    lsusb #with the stick plugged in!
    lsmod
    iwconfig
    cat /etc/resolv.conf
    Does LAN work?
    Last edited by praseodym; January 18th, 2014 at 11:07 AM.

  6. #6
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    Re: Edimax USB Wireless Adapter

    I'm using an Edimax 7811-Un.

    As for the commands ran:

    lsub
    Code:
    Bus 001 Device 011: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]
    Bus 001 Device 004: ID 046d:0991 Logitech, Inc. QuickCam Pro for Notebooks
    Bus 001 Device 010: ID 0930:6533 Toshiba Corp. 512M Stick
    Bus 001 Device 008: ID 1bcf:053a Sunplus Innovation Technology Inc. Targa Silvercrest OMC807-C optische Funkmaus
    Bus 001 Device 002: ID 05e3:0605 Genesys Logic, Inc. USB 2.0 Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 002: ID 059b:0032 Iomega Corp. Zip 250 (Ver 2)
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 002 Device 002: ID 413c:2003 Dell Computer Corp. Keyboard
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    lsmod:

    Code:
    Module                  Size  Used by
    nls_iso8859_1          12617  1 
    parport_pc             31981  0 
    ppdev                  17391  0 
    joydev                 17097  0 
    rfcomm                 53664  0 
    bnep                   18959  2 
    bluetooth             323656  10 bnep,rfcomm
    arc4                   12536  2 
    hid_generic            12492  0 
    gpio_ich               13229  0 
    rtl8192cu              66675  0 
    dcdbas                 14383  0 
    rtl_usb                18072  1 rtl8192cu
    rtlwifi                52621  2 rtl_usb,rtl8192cu
    rtl8192c_common        47173  1 rtl8192cu
    ip6t_REJECT            12826  1 
    xt_hl                  12465  6 
    ip6t_rt                13259  3 
    mac80211              517444  3 rtl_usb,rtlwifi,rtl8192cu
    nf_conntrack_ipv6      18450  7 
    binfmt_misc            13140  1 
    nf_defrag_ipv6         26064  1 nf_conntrack_ipv6
    ipt_REJECT             12485  1 
    xt_LOG                 17446  10 
    xt_limit               12541  13 
    xt_tcpudp              12756  18 
    xt_addrtype            12563  4 
    nf_conntrack_ipv4      14492  7 
    nf_defrag_ipv4         12649  1 nf_conntrack_ipv4
    xt_conntrack           12664  14 
    prism2_usb            185205  0 
    r8712u                158680  0 
    cfg80211              401762  3 mac80211,rtlwifi,prism2_usb
    usb_storage            48294  1 
    uvcvideo               71309  0 
    usbhid                 47361  0 
    videobuf2_vmalloc      13048  1 uvcvideo
    videobuf2_memops       13170  1 videobuf2_vmalloc
    videobuf2_core         39125  1 uvcvideo
    hid                    87370  2 hid_generic,usbhid
    videodev              107508  2 uvcvideo,videobuf2_core
    snd_usb_audio         119227  1 
    snd_usbmidi_lib        24326  1 snd_usb_audio
    ip6table_filter        12711  1 
    ip6_tables             17819  1 ip6table_filter
    nf_conntrack_netbios_ns    12585  0 
    nf_conntrack_broadcast    12541  1 nf_conntrack_netbios_ns
    nf_nat_ftp             12645  0 
    nf_nat                 25588  1 nf_nat_ftp
    nf_conntrack_ftp       14056  1 nf_nat_ftp
    nf_conntrack           82913  8 nf_nat_ftp,nf_conntrack_netbios_ns,nf_nat,xt_conntrack,nf_conntrack_broadcast,nf_conntrack_ftp,nf_conntrack_ipv4,nf_conntrack_ipv6
    iptable_filter         12706  1 
    ip_tables              17987  1 iptable_filter
    x_tables               22067  13 ip6table_filter,xt_hl,ip_tables,xt_tcpudp,xt_limit,xt_conntrack,xt_LOG,iptable_filter,ip6t_rt,ipt_REJECT,ip6_tables,xt_addrtype,ip6t_REJECT
    snd_hda_codec_idt      44605  1 
    microcode              18830  0 
    snd_hda_intel          42658  3 
    snd_hda_codec         164003  2 snd_hda_codec_idt,snd_hda_intel
    snd_hwdep              13272  2 snd_usb_audio,snd_hda_codec
    snd_pcm                89488  3 snd_usb_audio,snd_hda_codec,snd_hda_intel
    snd_page_alloc         14230  2 snd_pcm,snd_hda_intel
    snd_seq_midi           13132  0 
    snd_seq_midi_event     14475  1 snd_seq_midi
    snd_rawmidi            25094  2 snd_usbmidi_lib,snd_seq_midi
    psmouse                90642  0 
    snd_seq                55383  2 snd_seq_midi_event,snd_seq_midi
    serio_raw              13189  0 
    snd_seq_device         14137  3 snd_seq,snd_rawmidi,snd_seq_midi
    snd_timer              24447  2 snd_pcm,snd_seq
    snd                    60790  20 snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_idt,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
    i915                  594380  3 
    video                  18777  1 i915
    drm_kms_helper         46867  1 i915
    soundcore              12600  1 snd
    lpc_ich                16864  0 
    mac_hid                13037  0 
    drm                   242400  4 i915,drm_kms_helper
    i2c_algo_bit           13197  1 i915
    lp                     13299  0 
    parport                40795  3 lp,ppdev,parport_pc
    e100                   35945  0 
    mii                    13654  1 e100
    iwconfig:

    Code:
    wlan2     IEEE 802.11bgn  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
              Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
              Power Management:off
              
    lo        no wireless extensions.
    
    eth0      no wireless extensions.
    cat /etc/resolv.conf:
    Code:
    # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
    #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
    I cannot find whether LAN works or not. My router is too far away and I don't have a long enough cord to run to it.

  7. #7
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    Re: Edimax USB Wireless Adapter

    @praseodym--

    I think he needs to remove from /etc/modules or blacklist rtl8192cu as it doesn't drive his device.
    7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]
    This driver does, but you and I would structure the procedure a bit differently: http://askubuntu.com/questions/36497...us-doesnt-work

    Here is my test:
    Code:
    $ modinfo rtl8192cu-fixes/8192cu.ko | grep 7811
    alias:          usb:v7392p7811d*dc*dsc*dp*ic*isc*ip*in*
    We now return you to your regularly scheduled guru!
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  8. #8
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    Re: Edimax 7811-Un USB Wireless Adapter

    Download these files and save them in "Downloads" and extraxt the tarball there:

    https://dl.dropboxusercontent.com/u/...u-fixes.tar.gz

    http://de.archive.ubuntu.com/ubuntu/...buntu4_all.deb

    Installation:
    Code:
    cd ~/Downloads/
    sudo dpkg -i *.deb
    sudo dkms add ./rtl8192cu-fixes
    sudo dkms install 8192cu/1.8
    echo "blacklist rtl8192cu" | sudo tee -a /etc/modprobe.d/blacklist.conf
    Reboot

    Edit: New Link!
    Last edited by praseodym; January 19th, 2014 at 01:33 PM.

  9. #9
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    [Solved]Re: Edimax 7811-Un USB Wireless Adapter

    Okay. It took a while, but after a few long minutes, it all worked. I rebooted, and now I'm connected. Thank you all so much for your help!

  10. #10
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    Re: Edimax 7811-Un USB Wireless Adapter

    Check if all necessary stuff is installed:
    Code:
    sudo apt-get install linux-headers-generic linux-headers-$(uname -r) build-essential
    Edit: With this the driver will be compiled automatically after a kernel upgrade

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