I am looking for a driver for the TP-Link AC600 Archer T2U Plus, on Uubuntu 20.04 (kernel version 5.11.0-40-generic).

$ lsusb
Bus 005 Device 002: ID 2357:0120 TP-Link 802.11ac WLAN Adapter

$ inxi -N | grep "TP-Link"
  Device-2: TP-Link 802.11ac WLAN Adapter type: USB driver: usb-network

I installed a driver and it worked for the first time, when I opened the coputer today, the adaptater doesn't give me any Wi-Fi network.

  • 1
    Install the driver again. If you didn't use dkms, you need to install it after each kernel upgrade.
    – Pilot6
    Nov 21, 2021 at 17:35

2 Answers 2


I resolve it. I reinstalled the driver with this commands:

sudo apt install git dkms
git clone https://github.com/aircrack-ng/rtl8812au.git
cd rtl8812au
sudo make dkms_install

If you don't hace permission try to execute:

chmod 777 rtl8812au
  • I'm facing the same problem as op and using chmod 777 rtl8812au command didn't help. The connection is wiped out after i restart my computer. Also I can't connect to the 5Ghz band. How to connect to 5Ghz with T2U plus?
    – skekmal
    Jun 8 at 15:05
  • I had to fight a lot to find a usefull solution and a found some that I don't remeber. The last one I did was starting the process from 0. I mean to remove dkms and git and then follow the same commands again. Try with sudo apt remove dkms git. Jun 9 at 23:10

I get this error:

Error! DKMS tree already contains: 8812au-

You cannot add the same module/version combo more than once. make: *** [Makefile:2317: dkms_install] Error 3

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