Realtek rtl8821ce драйвер linux

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tomaspinho/rtl8821ce

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Fix incorrect kernel option and add grubby equivalent.

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README.md

This repository hosts the code for the Arch Linux AUR Package. It’s targeting Linux > 4.14 and is being developed for Arch Linux and Ubuntu 18.10. No support will be provided for other Linux distributions or Linux Kernel versions outside of that range.

The maintainers of this repository are not Realtek employees and are maintaining this repository for their own usage. Further feature development (such as proper power saving, etc.) will not be pursued here, but will be gladly integrated if newer driver sources are provided by Realtek. Use at your own risk.

This driver can be installed using DKMS. This is a system which will automatically recompile and install a kernel module when a new kernel gets installed or updated. To make use of DKMS, install the dkms package.

Make sure you have a proper build environment and dkms installed.

The following steps are required prior to building the driver on Ubuntu/Debian:

sudo apt install bc module-assistant build-essential dkms sudo m-a prepare 

Ubuntu users may also install the prebuilt rtl8821ce-dkms package, an older version of the driver maintained by the Ubuntu MOTU Developers group for bionic, eoan and focal. It has been known to work in cases where the newer driver available here does not. Bugs and issues with that package should be reported at Launchpad rather than here.

Make sure you have the base-devel package group installed before you proceed for the necessary compilation tools.

Dependencies for manual installation on Arch Linux

sudo pacman -Syu linux-headers dkms bc 

If you are running a non-vanilla kernel then install the headers to match the kernel package. Proceed to the section below.

An unofficial Gentoo package is available, using this repository as upstream. It is available from the trolltoo overlay. Gentoo does not use or require dkms for packaged drivers.

# layman -a trolltoo # emerge --ask net-wireless/rtl8821ce-driver 

Manual installation of driver

In order to install the driver open a terminal in the directory with the source code and execute the following command:

Open a terminal window and git clone the repository to your local disk

git clone https://github.com/tomaspinho/rtl8821ce.git cd rtl8821ce 

Then run the removal script:

Make sure you have your local copy of this repository fully updated:

When reporting issues, please make sure that debugging is enabled. To enable debugging either set MAKEFLAGS=»CONFIG_RTW_DEBUG = y» before compilation or edit Makefile:

This will enable verbose debug logging, helpful to developers.

PCIe Active State Power Management

Your distribution may come with PCIe Active State Power Management enabled by default. That may conflict with this driver. To disable:

sudo $EDITOR /etc/default/grub 

Add pcie_aspm=off at the end of GRUB_CMDLINE_LINUX_DEFAULT. Line should look like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=off" 

Then update your GRUB configuration:

On systems that doesn’t have update-grub but have grubby like Fedora, you can directly execute instead:

sudo grubby --update-kernel=ALL --args=pcie_aspm=off 

Some new Yoga laptops (like the Yoga 530) come with rtl8821ce as the Wi-Fi/Bluetooth chip. But the ideapad-laptop module, which may come included in your distribution, may conflict with this driver. To disable:

sudo modprobe -r ideapad_laptop 

This may be due to the Kernel loading up the wrong firmware file for this card. Please take a look at @wahsot’s tutorial at #19 (comment) to see if that helps you out.

If your system uses Secure Boot, the kernel will not accept user-supplied modules. There are two ways to solve this issue:

1. Disable Secure Boot via BIOS/UEFI settings.
2. Create or use an existing MOK (Machine Owner Key) to sign the compiled .ko linux kernel object produced by DKMS.

Unstable connection — slowdowns or dropouts

The problem may be due to the periodic scanning of access points by the network applet.

This fix worked helpful on Pop! _OS/Ubuntu 20.10 and Fedora 33. Both with GNOME and NetworkManager. #179

Set the BSSID from your network applet. In GNOME this can be done in WiFi Settings > Your profile > Identity > BSSID .

We are going to disable the Connectivity Check option in NetworkManager. This by editing the file in /var/lib/NetworkManager/NetworkManager-intern.conf and adding the following instructions at the end:

[connectivity] .set.enabled=false 

Then, just reboot or restart the NetworkManager unit to fix the problem.

Wi-Fi not working for kernel >= 5.9

The Linux Kernel 5.9 version comes with a broken rtw88 module developed by Realtek that has poor compatibility with most revisions of the 8821ce chip.

You must disable it by adding the following to your module blacklists ( /etc/modprobe.d/blacklist.conf ):

Then, make sure you have the rtl8821ce module correctly installed.

Turn off your computer, wait a few seconds (to force firmware reload) and then turn it on again.

Wi-Fi and Bluetooth don’t work after suspend

This is a bug that won’t be fixed until/if Realtek implements proper power management themselves. Given they are now only working in rtw88 , this driver will most likely never be fixed in this regard. Please avoid opening issues about this.

Monitor (promiscuous) mode doesn’t work

This driver doesn’t support it and never will. Please avoid opening issues about this.

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How to install the Realtek RTL8821CE driver

Usually, when we install a Linux distribution on a laptop, often Wi-Fi support is present in whole or in part for most models. The drivers are integrated into the Linux kernel and as a result, everything “just works” out of the box. But problems start if there is no driver for your Wi-Fi. You need to find it and install it manually.

For example, the owner of HP CM-0078AU notebooks may encounter such a problem.

If you have a Wi-Fi adapter based on the Realtek RTL8821CE chipset, then Linux does not have a driver for it by default. 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.

To fix this problem, just install the required driver.

This driver works on Linux kernels > 4.14 (all modern distributions meet this requirement). This driver has been tested on Debian, Ubuntu, Linux Mint, Arch Linux, Gentoo and should work on all derivative distributions.

This driver can be installed using DKMS. This is a system that automatically recompiles and installs kernel modules when a new kernel is installed as a result of an upgrade. To use DKMS, install the dkms package.

To check which integrated Wi-Fi adapter you have, run the command:

If your output contains the line RTL8821CE, then this instruction will help you:

Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter

Offline installation of Realtek RTL8821CE

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. 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.

Download the driver installation file:

wget http://archive.ubuntu.com/ubuntu/pool/universe/r/rtl8821ce/rtl8821ce-dkms_5.5.2.1-0ubuntu4_all.deb

If the link to the driver stopped working, then go to the page to find the actual link: https://pkgs.org/search/?q=rtl8821ce-dkms

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:

sudo apt install ./rtl8821ce-dkms_5.5.2.1-0ubuntu4_all.deb

How to install Realtek RTL8821CE Driver on Ubuntu 21.04 and Later

The driver has been placed in the standard repository, so you just need to run the command:

sudo apt install rtl8821ce-dkms

How to install Realtek RTL8821CE Driver on Ubuntu 20.04

Starting with Ubuntu 20.04, this driver is available in Additional Drivers (Software & Updates). 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. After a reboot, everything will work.

How to install Realtek RTL8821CE driver on Debian, Ubuntu, Kali Linux, Linux Mint and their derivatives

Run the following commands:

sudo apt install bc module-assistant build-essential dkms git clone https://github.com/tomaspinho/rtl8821ce cd rtl8821ce sudo m-a prepare sudo ./dkms-install.sh

Then restart your computer and everything should work.

How to install Realtek RTL8821CE driver on Arch Linux, BlackArch and their derivatives

Install pikaur as shown in the “Automatic installation and update of AUR packages” article, then simply run the command:

pikaur -S rtl8821ce-dkms-git

How to Install Realtek RTL8821CE Driver in Gentoo

layman -a trolltoo emerge --ask net-wireless/rtl8821ce-driver

Removing the driver

Open a terminal and use git clone to clone the repository to your local drive:

git clone https://github.com/tomaspinho/rtl8821ce.git cd rtl8821ce

Then run the uninstall script:

Driver update

Make sure you have the latest version of the repository on disk:

Remove any stale binaries:

Possible problems

Secure Boot

If your system uses secure boot, disable it in the BIOS settings, otherwise the kernel will not accept custom modules.

PCIe Activate State Power Management

Your distribution may ship with PCIe Activate State Power Management enabled by default. It may conflict with this driver. To disable:

sudo $EDITOR /etc/default/grub

Add pci=noaer to the end of GRUB_CMDLINE_LINUX_DEFAULT. The line should look something like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=noaer"

Then update your GRUB config:

Lenovo Yoga Laptops

Some newer Yoga laptops (like the Yoga 530) come with rtl8821ce as a Wi-Fi/Bluetooth chip. But the ideapad-laptop module that may be included with your distribution may conflict with this driver. To turn it off:

sudo modprobe -r ideapad_laptop

BlueTooth not working

This could be because the kernel is loading the wrong firmware file for this card. Take a look at the wahsot manual at https://github.com/tomaspinho/rtl8821ce/issues/19#issuecomment-452196840 to see if it can fix your issue.

Related articles:

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