How to install Realtek 8811CU Wireless LAN 802.11ac USB NIC on Ubuntu 19.04
Before build this driver make sure make, gcc, linux-header and git have been installed.
Step 1: Clone brektrou repository
mkdir -p ~/build cd ~/build git clone https://github.com/brektrou/rtl8821CU.git
Step 2: Build and install
cd ~/build/rtl8821CU make sudo make install
Step 3: Check installed driver
If you successfully install the driver, the driver is installed on /lib/modules//kernel/drivers/net/wireless/realtek/rtl8821cu. Check the driver with the ls command:
ls /lib/modules/$(uname -r)/kernel/drivers/net/wireless/realtek/rtl8821cu
Make sure 8821cu.ko file present on that directory.
8 thoughts on “How to install Realtek 8811CU Wireless LAN 802.11ac USB NIC on Ubuntu 19.04”
only for x32 .
I did all you said, but nothing happens 🙁 . Thank you btw
You save my time , Thanks so much for your posting.
Thank You very much. I can now use my Dual Band USB Adapter (8811CU on old Dell 780 with Ubuntu 18.04.4).
But I can use only 2,4GHz option. Do You have any idea, how switch to 5GHz ?
Thank You very much. I can use now 8811CU with old Dell780 and Ubuntu 18.04.4.
But only in 2,4GHz.
Do You have any idea how to switch to 5GHz?
Thank You, I can now use my 8811CU with old Dell780 und Ubuntu Studio. One problem is, only 2,4GHz. Have You any idea, how to use with 5GHz?