Ubuntu – Tp-Link WN821N (2357:0107) not working


I followed the instructions on that post, but my dongle seems not to work: Tp-Link WN821N (2357:0107) not working with Ubuntu 16.04

After installing the RTL8192EU driver, it finally detects the dongle and shows some information when typing iwconfig in the console (see below). but even then, the dongle is not showing anywhere else and I can not search for wireless networks.

anthonidas@AnthoUnixSurface:~$ lsusb
Bus 001 Device 002: ID 2357:0107  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
anthonidas@AnthoUnixSurface:~$ iwconfig
ens33     no wireless extensions.

lo        no wireless extensions.

enx98ded013b4aa  unassociated  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency=2.412 GHz  Access Point: Not-Associated   
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

anthonidas@AnthoUnixSurface:~$ uname -a
Linux AnthoUnixSurface 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Does anyone have an idea what I did wrong? Is the TP-Link WN821N not compatible with Linux?

this is the output of dkms status:

anthonidas@AnthoUnixSurface:~$ dkms status
rtl8192eu, 4.4, 4.4.0-62-generic, x86_64: installed

here we go:

anthonidas@AnthoUnixSurface:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

Best Answer

Ok, I finally found the solution in the Kali-Linux Forum and it works for Ubuntu too.

What I did first was to uninstall your driver and download that one: https://github.com/Mange/rtl8192eu-linux-driver, but in fact I did not check if it is the same... so I am pretty sure that it would have worked with your driver aswell.

Anyway the final solution was to blacklist the CU-Driver!!

So for everyone having the same issue, do the following:

1. Download the rtl8192eu driver from the above link or from pilot's repo
2. Install it with make and sudo make install
3. Blacklist the rtl8192cu driver
   in terminal type: sudo nano /etc/modprobe.d/blacklist.conf
   add a new line with that --> blacklist rtl8192cu
   save the file
4. Reboot and AFTERWARDS plug your dongle in
5. The post in kali-linux's forum said, that for that guy it hadn't worked on the first try. In that case he suggested just to repeat the installation several times.

I don't take any credits, I just copied NL2016's answer here because it was helpful for me and it could be for others too... If you want to read his discussion, here it is: https://forums.kali.org/showthread.php?34548-TP-Link-TL-WN821N-Wifi-Adaptor-no-interface&p=67560&viewfull=1#post67560

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