Comments on: Installing WiFi Driver For Realtek 802.11ac on Linux (0bda:c811)

By: Pablo Gorditas

Pablo Gorditas — Tue, 19 Aug 2025 05:05:26 +0000

Wow Worked on Linux Mint. I have been going down this rabbit hole for 5 hours before I found this. You are Awesome!

By: Abraão Gomes

Abraão Gomes — Fri, 02 May 2025 15:46:23 +0000

Worked very well here, Linux Mint 21.1 Cinnamon, cinnamon version 5.6.5, kernel: 5.15.0-56-generic ! Thank you.

By: Infinity

Infinity — Tue, 29 Apr 2025 12:34:01 +0000

In reply to rahul dutta. Hi, i have secure boot disabled and i'ts still giving me the same error.

By: rahul dutta

rahul dutta — Thu, 06 Feb 2025 02:50:41 +0000

In reply to Ryan Huam. I had this same issue but resolved when I disabled secure boot on my system. The wifi card now seems to work fine in Debian 12

By: Adrian Fox

Adrian Fox — Fri, 04 Aug 2023 11:27:27 +0000

Wonderful! You are indeed a life saver. I bought a cheap little Chinese USB wifi dongle for 10 euros, but despite a lot of messing with their CD files and downloading them from the Internet, nothing worked as claimed in their little manual. Using the Linux option I managed to find a setup file which when implemented at the terminal seemed to do nothing.
I did at least identify the chip with lsusb and this enabled me to find your wonderful page about installing the necessary. Your instructions are so clear and well written and it worked like a dream, with the Wifi network showing up immediately after doing what you say in the Ubuntu/Debian scripts (I am on Linux Mint 21.1)
This now gives me the flexibility to move the desktop away from the cable connection and into another room or location.
If I could give you a medal, I would!

By: Ulisse

Ulisse — Thu, 13 Jul 2023 10:03:50 +0000

Thank you very much for the detailed instructions.
I managed to install everything perfectly on LinuxMint 21.1 xfce4 on a Intel Core 2 Duo E8400 (2)!

By: Ryan Huam

Ryan Huam — Mon, 26 Jun 2023 14:42:11 +0000

I got this error:

Building module:

cleaning build area…

‘make’ KVER=5.19.0-45-generic………………(bad exit status: 2)

ERROR (dkms apport): binary package for rtl8821CU: 5.4.1 not found

Error! Bad return status for module build on kernel: 5.19.0-45-generic (x86_64)

Consult /var/lib/dkms/rtl8821CU/5.4.1/build/make.log for more information.

Finished running dkms install steps.

And after that the last command output this:

modprobe: FATAL: Module 8821cu not found in directory /lib/modules/5.19.0-45-generic

By: Ivan

Ivan — Thu, 27 Apr 2023 20:25:19 +0000

Excellent guide working 100 percent on the first try

By: Cal

Cal — Wed, 08 Mar 2023 07:11:43 +0000

Worked like a charm. Thank you!

By: Guilherme Gouveia da Costa

Guilherme Gouveia da Costa — Wed, 01 Feb 2023 22:12:31 +0000

Thank you so much.
simple instructions. 100% workfull.