Open the additional software settings and check the box “Using DKMS source for the Realtek 8821C…” (use DKMS source for the Realtek 8821C) and then reboot. Starting with Ubuntu 20.04, this driver is available in Additional Drivers (Software & Updates). How to install Realtek RTL8821CE Driver on Ubuntu 20.04 The driver has been placed in the standard repository, so you just need to run the command: How to install Realtek RTL8821CE Driver on Ubuntu 21.04 and Later Transfer the downloaded file to the computer where you want to install it, go to the directory with the driver and start the installation with the following command: If the link to the driver stopped working, then go to the page to find the actual link: This method may not work for the reason that the driver installation requires dependencies (for example, kernel headers) that could be installed if the computer had an Internet connection, but if the computer is offline, then you have to hope that all the necessary files are present by default. If the computer on which you want to install the driver does not have an Internet connection, then you can download the installation file from the Ubuntu repositories, transfer it to a USB flash drive to a computer without the Internet, and try to install it manually. Offline installation of Realtek RTL8821CE RTL8821CE 802.11ac PCIe Wireless Network Adapter Network controller: Realtek Semiconductor Co., Ltd. If your output contains the line RTL8821CE, then this instruction will help you: To check which integrated Wi-Fi adapter you have, run the command: This is a system that automatically recompiles and installs kernel modules when a new kernel is installed as a result of an upgrade.
This driver has been tested on Debian, Ubuntu, Linux Mint, Arch Linux, Gentoo and should work on all derivative distributions. This driver works on Linux kernels > 4.14 (all modern distributions meet this requirement). To fix this problem, just install the required driver. As a result, the OS does not see the device, and there is no Wi-Fi icon at all in the panel next to the clock. If you have a Wi-Fi adapter based on the Realtek RTL8821CE chipset, then Linux does not have a driver for it by default.
You need to find it and install it manually.įor example, the owner of HP CM-0078AU notebooks may encounter such a problem. But problems start if there is no driver for your Wi-Fi. The drivers are integrated into the Linux kernel and as a result, everything “just works” out of the box. Usually, when we install a Linux distribution on a laptop, often Wi-Fi support is present in whole or in part for most models. See also: How to install Wi-Fi driver in Linux if the computer is offline
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