RTL8821CE device is not recognized

Question

My computer does not recognize the network devices, right now I am using a network cable, but when I go to configuration / networks only the cable appears,it does not recognize any device, the drivers seem to be well installed. Any idea of why is this happening? I have tried this command and I have the info but I don't know how to use it since it is the first time that I use ubuntu

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
    Subsystem: Lenovo RTL8821CE 802.11ac PCIe Wireless Network Adapter [17aa:c024]
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:38c7]
    Kernel driver in use: r8169
0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
8: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

Please [edit] your question and add output of lspci -knn | grep Net -A3; rfkill list terminal command. — Pilot6, Jun 27 '20 at 17:38
You need to post information from wireless-info to get help. — Pilot6, Jun 27 '20 at 17:39

Pilot6 · Accepted Answer · 2020-06-28T12:56:16.467

0

Connect to the internet and run

sudo apt update
sudo apt install git dkms
git clone -b rtw88 https://github.com/lwfinger/rtlwifi_new.git
sudo dkms add ./rtlwifi_new
sudo dkms install rtlwifi-new/0.6

This will install drivers.

You also need firmware for this rtl8821ce device. Run to get it:

git clone git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
sudo cp linux-firmware/rtw88/rtw8821c_fw.bin /lib/firmware/rtw88
sudo modprobe rtw_8821ce

After this the device should work.

edited Jun 28 '20 at 12:56

answered Jun 27 '20 at 18:11

Pilot6

92,169

Done!What now,reboot and..? – L.Bar5522 Jun 27 '20 at 18:23
Disable secure boot in bios. – Pilot6 Jun 27 '20 at 18:27
already done ,what now?? – L.Bar5522 Jun 27 '20 at 18:44
It should work now. – Pilot6 Jun 27 '20 at 19:24
still not working – L.Bar5522 Jun 27 '20 at 19:31
What is the response to the terminal commands: sudo modprobe rtw_8821ce and also: dmesg | grep rtw – chili555 Jun 28 '20 at 00:12
[ 3.460971] rtw_core: module verification failed: signature and/or required key missing - tainting kernel [ 3.487567] rtw_8821ce 0000:02:00.0: enabling device (0000 -> 0003) [ 3.487788] rtw_8821ce 0000:02:00.0: Direct firmware load for ``` – L.Bar5522 Jun 28 '20 at 11:19
[ 3.487793] rtw_8821ce 0000:02:00.0: failed to request firmware [ 3.499982] rtw_8821ce 0000:02:00.0: failed to load firmware [ 3.499988] rtw_8821ce 0000:02:00.0: failed to setup chip efuse info [ 3.499991] rtw_8821ce 0000:02:00.0: failed to setup chip information [ 3.505013] rtw_8821ce: probe of 0000:02:00.0 failed with error -22 ``` – L.Bar5522 Jun 28 '20 at 11:21
You also need firmware. – Pilot6 Jun 28 '20 at 12:53
Alright,and how do I install it? – L.Bar5522 Jun 28 '20 at 16:00
I added howto to my answer – Pilot6 Jun 28 '20 at 17:41
Oh! Sorry, I did not realize, thank you very much for all the help, I really appreciate it. – L.Bar5522 Jun 28 '20 at 18:10
It works!!Thank u very very much!!I've been trying to solve this for at least 4 weeks!!:D:D – L.Bar5522 Jun 28 '20 at 18:22

RTL8821CE device is not recognized

1 Answers1