Linux wifi driver rtl8821ce

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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.

Источник

How to install Wi-Fi driver for Realtek RTL8821CE on Ubuntu 18.04? [duplicate]

I’m trying to install drivers for my Wifi on my HP All-in-one desktop. I’ve been told to show the output of the command «sudo lshw -C network» so here it is:

*-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd physical id: 0 bus info: pci@0000:01:00.0 logical name: enp1s0 version: 15 serial: 48:ba:4e:5c:06:5f size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.1.21 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: ire:31 import:e000(size=256) memory: fea04000-fea04fff memory:fea00000-fea03fff *-network UNCLAIMED description: Network controller product: Realtek Semiconductor Co., Ltd. vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: import:d000(size=256) memory:fe900000-fe90ffff 

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821] Subsystem: Hewlett-Packard Company RTL8821CE 802.11ac PCIe Wireless Network Adapter [103c:831a] 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader [10ec:5229] (rev 01) 

Источник

How do I install drivers for the RTL8821CE Network Controller on Ubuntu 20.04?

My Laptop (HP Laptop 14-ck1xxx) came with the RTL8821CE Network Controller. When I run lspci | grep Network I get:

03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter 

1. Download the repo at https://github.com/tomaspinho/rtl8821ce.
2. Unzip the file and rename the folder from rtl8821ce-master to rtl8821ce .
3. Run the following commands in the terminal:
   • cd Downloads/rtl8821ce/
   • sudo apt install bc module-assistant build-essential dkms
   • sudo m-a prepare
   • sudo ./dkms-install.sh

Everything seemed to install and execute successfully. Then, I rebooted my laptop and made sure secure boot is disabled. However, Ubuntu still displays:

No Wi-Fi Adapter Found - make sure you have a Wi-Fi adapter plugged in and turned on 

The command uname -r returns:

The command sudo lshw -C network returns:

*-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: eno1 version: 15 serial: c4:65:16:08:52:bf size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.178.37 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:16 ioport:4000(size=256) memory:a1204000-a1204fff memory:a1200000-a1203fff *-network UNCLAIMED description: Network controller product: RTL8821CE 802.11ac PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: ioport:3000(size=256) memory:a1100000-a110ffff 

What am I doing wrong? How can this be solved?

Start with sudo apt install rtl8821ce-dkms . I am not sure it is quite up-to-date. There is a git repo with working drivers too. I answered it many times.

4 Answers 4

This fixed the No Wifi on my ASUS D509DA laptop, Ubuntu 20.04.1 LTS:

First Ensure that you disable Secure Boot in the BIOS(See snip below) NOTE: I did not have do Step C as I had already disabled Secure boot.

sudo apt-get install rtl8821ce-dkms 

To see what adaptor you have and hence which dtiver to install:

sudo lshw -C network *-network UNCLAIMED description: Network controller product: RTL8821CE 802.11ac PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. 

read full details at this link for your specific driver, see snip from that page below https://easylinuxtipsproject.blogspot.com/p/realtek.html#ID6

Realtek RTL8821CE chipset 6. Below you’ll find a how-to for installing a driver, which should get your RTL8821CE chipset to work.

Proceed like this:

a. First establish temporary internet connection by other means.

b. Launch a terminal window. (You can launch a terminal window like this: Click)

c. Copy/paste the following command line into the terminal, in order to install the application mokutil and to let it examine the Secure Boot status of your machine:

sudo apt-get install mokutil && mokutil —sb-state

Press Enter. Type your password when prompted. In Ubuntu this remains entirely invisible, not even dots will show when you type it, that’s normal. In Mint this has changed: you’ll see asterisks when you type. Press Enter again.

If it reports that Secure Boot is enabled: reboot and disable Secure Boot in the BIOS. In order to do this, you might need to set an administrator password in the BIOS first.

Disabling Secure Boot is no loss: it adds no meaningful security anyway. It’s primarily a means for Microsoft to enforce its vendor lock-in on your computer.

d. Copy/paste the following command line into the terminal, in order to install the driver:

sudo apt-get install rtl8821ce-dkms

Press Enter.

e. Reboot your computer. Your WiFi card should work now. If not: try the rtw88 driver, as described in item 7 below.

Источник