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Thread: Belkin F9L1004 wifi USB dongle

  1. #1
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    Question Belkin F9L1004 wifi USB dongle

    I have this wonderful Belkin F9L1004 working under Windows.

    I know it's built around an RTL8192CU chipset which should be currently supported by my Kubuntu machine as I can see the driver sitting in the /lib/modules/3.2.0-23-lowlatency/kernel/drivers/net/wireless/rtlwifi/rtl8192cu directory.

    The kernel page is 2 yars old now:
    http://wireless.kernel.org/en/users/Drivers/rtl819x .

    lsusb is reporting it correctly as:

    Bus 002 Device 002: ID 050d:1004 Belkin Components F9L1004 802.11n Surf N300 XR Wireless Adapter [Realtek RTL8192CU]

    And, as suggested in another linux forum, I have checked in the "upstream" website at http://wiki.debian.org/rtl819x .

    The "linux-firmware" package is already in place as well as the related firmware file:
    -rw-r--r-- 1 root root 16014 lug 20 22:30 /lib/firmware/rtlwifi/rtl8192cufw.bin

    If I plug the dongle, something happens, but not much:
    2012-10-06T09:44:42.497072+02:00 Feynman kernel: [ 4296.609608] usb 2-6: new high-speed USB device number 2 using ehci_hcd

    If I manually load the driver, I can see something happening in the syslogs:

    2012-10-06T09:52:34.649019+02:00 Feynman kernel: [ 4768.358574] cfg80211: Calling CRDA to update world regulatory domain
    2012-10-06T09:52:34.705160+02:00 Feynman kernel: [ 4768.412415] cfg80211: World regulatory domain updated:
    2012-10-06T09:52:34.705179+02:00 Feynman kernel: [ 4768.412417] cfg80211: (start_freq - end_freq AT bandwidth), (max_antenna_gain, max_eirp)
    2012-10-06T09:52:34.705184+02:00 Feynman kernel: [ 4768.412419] cfg80211: (2402000 KHz - 2472000 KHz AT 40000 KHz), (300 mBi, 2000 mBm)
    2012-10-06T09:52:34.705187+02:00 Feynman kernel: [ 4768.412421] cfg80211: (2457000 KHz - 2482000 KHz AT 20000 KHz), (300 mBi, 2000 mBm)
    2012-10-06T09:52:34.705190+02:00 Feynman kernel: [ 4768.412422] cfg80211: (2474000 KHz - 2494000 KHz AT 20000 KHz), (300 mBi, 2000 mBm)
    2012-10-06T09:52:34.705193+02:00 Feynman kernel: [ 4768.412424] cfg80211: (5170000 KHz - 5250000 KHz AT 40000 KHz), (300 mBi, 2000 mBm)
    2012-10-06T09:52:34.705196+02:00 Feynman kernel: [ 4768.412425] cfg80211: (5735000 KHz - 5835000 KHz AT 40000 KHz), (300 mBi, 2000 mBm)
    2012-10-06T09:52:34.761135+02:00 Feynman kernel: [ 4768.469773] usbcore: registered new interface driver rtl8192cu

    (The 5 GHz stuff is puzzling to me, anyway).
    But neither ifconfig nor iwconfig reports any new interface to be configured.

    So my points so far are:

    1. Why have I to manually load the module?
    2. How to fix this?
    3. How can I check whether the firmware file has been loaded?
    4. What'd be next?

    TIA.
    Sent as ripples into the electromagnetic field.
    No single photon has been harmed in the process.

  2. #2
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    Re: Belkin F9L1004 wifi USB dongle

    Maybe part of the problems come from the moduile load.
    If I run modinfo I get:
    ~ modinfo rtl8192cu
    filename: /lib/modules/3.2.0-23-generic/kernel/drivers/net/wireless/rtlwifi/rtl8192cu/rtl8192cu.ko
    firmware: rtlwifi/rtl8192cufw.bin
    description: Realtek 8192C/8188C 802.11n USB wireless
    license: GPL
    author: Larry Finger <Larry.Finger@lwfinger.net>
    author: Ziv Huang <ziv_huang@realtek.com>
    author: Georgia <georgia@realtek.com>
    srcversion: 10D1B1055E55921BDAAD523
    alias: usb:v7392p7822d*dc*dsc*dp*ic*isc*ip*
    alias: usb:v20F4p624Dd*dc*dsc*dp*ic*isc*ip*
    alias: usb:v2019pAB2Bd*dc*dsc*dp*ic*isc*ip*
    ...

    IS there any extra argument I need to pass to "modprobe rtl8192cu" in order to get the firlware loaded?

    [EDIT] I canot find something like "v050Dp1004d" in the output from "modinfo rtl8192cu".
    Any hint?
    Last edited by uqbar; October 8th, 2012 at 02:24 PM.
    Sent as ripples into the electromagnetic field.
    No single photon has been harmed in the process.

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