DWA-131 Ver b Frm/w 2.00

[chili555]

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.

[revelias]

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

[wadelius]

The trick, of course, is whether the new kernel's version of rtl8192cu actually covers your device.

modinfo rtl8192cu | grep 330D

And you can get the old driver iwl3945 to not load by blacklisting it.

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!

[chili555]

Graphics is a question for General Help. You might see a clue in:

cat /var/log/Xorg.0.log | grep EE

Does the device do more than light up? Does it connect??

[wadelius]

When I enable network in recovery mode it lights up. Running iwlist wlan1 scan returns

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.

cat /var/log/Xorg.0.log | grep EE

gives

(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)

[chili555]

To General Help you go, sir or madam! I am graphics-challenged. http://ubuntuforums.org/forumdisplay.php?f=331

[wadelius]

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

wlan1    No scan results

Any ideas on stuff I can try to get it to scan?

[chili555]

Look for informative clues:

rfkill list all
dmesg | grep -e rtl -e wlan
iwconfig

[wadelius]

Look for informative clues:

rfkill list all
dmesg | grep -e rtl -e wlan
iwconfig

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

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

iwlist wlan2 scan
wlan2     No scan results

wlan0 is the old intel card, wlan2 the adapter.

Tried:

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!

[chili555]

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.

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.