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Thread: DWA-131 Ver b Frm/w 2.00

  1. #31
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    Re: DWA-131 Ver b Frm/w 2.00

    I deeply regret that I must reluctantly add this device to my short list of only two devices that I know of no way to get working. The only suggestions I have left are to email Realtek and ask them about it:
    $ modinfo rtl8192cu
    filename: /lib/modules/3.5.0-25-generic/updates/cw-3.6/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>
    And, finally, regrettably, return it and get a different device. I'm sorry I couldn't be of further assistance.
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

  2. #32
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    Re: DWA-131 Ver b Frm/w 2.00

    Don't worry about it. I appreciate everything you've done. Thanks.

  3. #33
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    Re: DWA-131 Ver b Frm/w 2.00

    Quote Originally Posted by chili555 View Post
    The trick, of course, is whether the new kernel's version of rtl8192cu actually covers your device.
    Code:
    modinfo rtl8192cu | grep 330D
    And you can get the old driver iwl3945 to not load by blacklisting it.
    Code:
    sudo su
    echo "blacklist iwl3945" >> /etc/modprobe.d/blacklist.conf
    modprobe -r iwl3945
    exit
    What was not working about your Intel? Mine works beautifully in every respect.
    My intel card works well, but I want to make better use of my n-network at home.

    Wow, you guys have really tried a lot of stuff, too bad the ndiswrapper solution does not work.

    Meanwhile I have done my best to destroy my system . I did a major misreading and mistook my 2001:330d for the 2001:3309 in the most recent compat-drivers source code for rtl8192cu. To find out what chip is powering the adapter I opened it, and it is indeed a rtl8192cu chip.

    I then thought, hey, why not try to add the VID PID to the driver and hope? So to test this I changed the 3309 to 330D and installed the drivers from source. After a reboot the connected dwa-131 lights up, but I have no grapics .

    In recovery mode root console iwconfig shows 2 wireless devices! So finally it is recognised, and hopefully working. So the question is now, how do I restore the graphics? Any pointers would be very welcome!

  4. #34
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    Re: DWA-131 Ver b Frm/w 2.00

    Graphics is a question for General Help. You might see a clue in:
    Code:
    cat /var/log/Xorg.0.log | grep EE
    Does the device do more than light up? Does it connect??
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

  5. #35
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    Re: DWA-131 Ver b Frm/w 2.00

    When I enable network in recovery mode it lights up. Running iwlist wlan1 scan returns
    Code:
    wlan1   No scan results
    I'll see if I can enable the graphics somehow, that is the first priority now.

    I tried starting Xorg from the recovery console, and that crashes.

    Code:
    cat /var/log/Xorg.0.log | grep EE
    gives
    Code:
    (EE) intel(0): failed to get resources: Invalid argument
    (EE) Screen(s) found, but none have a usable configuration.
    
    ...
    
    Fatal server error:
    no screens found
    (EE)

  6. #36
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    Re: DWA-131 Ver b Frm/w 2.00

    To General Help you go, sir or madam! I am graphics-challenged. http://ubuntuforums.org/forumdisplay.php?f=331
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

  7. #37
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    Re: DWA-131 Ver b Frm/w 2.00

    I have posted there now: http://ubuntuforums.org/showthread.php?t=2122245

    I can boot completely with older kernels, but I want to try 3.8 since the adapter might start to work with that one.

    I want to experiment a bit with recovery root console to see if I can get the dwa-131 to work. As I wrote earlier, iwlist wlan1 scan returns
    Code:
    wlan1    No scan results
    Any ideas on stuff I can try to get it to scan?

  8. #38
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    Re: DWA-131 Ver b Frm/w 2.00

    Look for informative clues:
    Code:
    rfkill list all
    dmesg | grep -e rtl -e wlan
    iwconfig
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

  9. #39
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    Re: DWA-131 Ver b Frm/w 2.00

    Quote Originally Posted by chili555 View Post
    Look for informative clues:
    Code:
    rfkill list all
    dmesg | grep -e rtl -e wlan
    iwconfig
    Code:
    rfkill list all
    0: phy0: Wireless LAN
            Soft blocked: no
            Hard blocked: no
    1: acer-wireless: Wireless LAN
            Soft blocked: no
            Hard blocked: no
    2: hci0: Wireless LAN
            Soft blocked: no
            Hard blocked: no
    3: phy1: Wireless LAN
            Soft blocked: no
            Hard blocked: no

    Code:
    dmesg | grep -e rtl -e wlan
    rtl8192cu: Chip version 0x11
    rtlwifi: rx_max_size 15360, rx_urb_num 8, in_ep 1
    rtl8192cu: Loading firmware rtlwifi/rtl8192cufw.bin
    usbcore: registered new interface driver rtl8192cu
    ieee80211 phy1:  Selected rate control algorithm 'rtl_rc'
    rtlwifi: wireless switch is on
    IPv6: ADDRCONF (NETDEV_UP): wlan2: link is not ready
    wlan0: authenticate with 4c:60:de:2c:0a:79
    wlan0: capabilities/regulatory prevented using AP HT/VHT configuraion, downgraded
    wlan0: send auth to 4c:60:de:2c:0a:79 (try 1/3)
    wlan0: authenticated
    wlan0: associate with 4c:60:de:2c:0a:79 (try 1/3)
    wlan0: RX AssocResp from 4c:60:de:2c:0a:79 (capab=0x411 status=0 aid=5)
    wlan0: associated
    IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    Code:
    iwlist wlan2 scan
    wlan2     No scan results
    wlan0 is the old intel card, wlan2 the adapter.

    Tried:
    Code:
    modprobe -r rtl8192cu
    modprobe rtl8192cu
    After that I can scan ! So if I could configure a wpa_supplicant.conf I guess I can use the adapter. If the graphics would start working I could try network-manager, so I'm going to focus on that now.
    Thank you for the help chili555!

  10. #40
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    Re: DWA-131 Ver b Frm/w 2.00

    In order for Network Manager to manage (ha, ha!) wlan1, you'll probably need to blacklist or at least temporarily unload the driver associated with wlan0.
    Code:
    sudo modprobe -r <some_driver>
    We would love to see the details of the file(s) you modified to get rtl8192cu to drive this device. I'm sure revelias and a few dozen future searchers will appreciate it.
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

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