Rtl8821ce wireless adapter not working

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1

Kernel: 5.4.74-1-MANJARO x86_64 bits: 64 Desktop: Xfce 4.14.2
Distro: Manjaro Linux
Machine:
Type: Desktop System: LENOVO product: 90LX0091IN v: ideacentre 510S-07ICK
serial: <superuser/root required>
Mobo: LENOVO model: 3178 v: NOK serial: <superuser/root required>
UEFI: LENOVO v: M30KT19A date: 01/31/2020
CPU:
Info: Quad Core model: Intel Core i3-9100 bits: 64 type: MCP
L2 cache: 6144 KiB
Speed: 900 MHz min/max: 800/4200 MHz Core speeds (MHz): 1: 858 2: 815
3: 826 4: 855
Graphics:
Device-1: Intel 8th Gen Core Processor Gaussian Mixture Model driver: i915
v: kernel
Display: x11 server: X.Org 1.20.9 driver: intel unloaded: modesetting
resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2) v: 4.6 Mesa 20.2.1
Audio:
Device-1: Intel 200 Series PCH HD Audio driver: snd_hda_intel
Sound Server: ALSA v: k5.4.74-1-MANJARO
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
driver: r8169
IF: enp2s0 state: down mac: a4:ae:12:2e:80:d5
Device-2: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter
driver: rtl8821ce
IF: wlp3s0 state: down mac: ae:8b:39:df:81:0a
IF-ID-1: enp0s20f0u10 state: unknown speed: N/A duplex: N/A
mac: aa:62:b1:72:ba:11
Drives:
Local Storage: total: 1.17 TiB used: 10.77 GiB (0.9%)
ID-1: /dev/nvme0n1 vendor: Kingston model: SA2000M8250G size: 232.89 GiB
ID-2: /dev/sda vendor: Western Digital model: WD10EZEX-08WN4A0
size: 931.51 GiB
ID-3: /dev/sdb type: USB vendor: SanDisk model: Ultra Fit size: 28.65 GiB
Partition:
ID-1: / size: 219.86 GiB used: 10.77 GiB (4.9%) fs: ext4
dev: /dev/nvme0n1p3
Swap:
ID-1: swap-1 type: partition size: 8.00 GiB used: 0 KiB (0.0%)
dev: /dev/nvme0n1p2
Sensors:
System Temperatures: cpu: 39.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info:
Processes: 192 Uptime: 13m Memory: 7.67 GiB used: 1.34 GiB (17.5%)
Shell: Bash inxi: 3.1.08

I tried kernel 5.9 and wifi stopped working . now It is not working in kernel 5.4 also. I tried reinstall linux54-headers and rtl8821ce but unable to restore wifi.

2

Hi!
Try with rtl8821ce-dkms, this way any time the system will update kernel it’ll also update the modules

3

I have been in your situation until 2 days ago. Here are some relevant threads:

WIFI not working in linux 5.9.1 · Issue #176 · tomaspinho/rtl8821ce

TL;DR nobody seems to know why it is happening. Wi-Fi seems to come back shortly after a kernel update.

4

Why this weird thing is happening with 8821wifi adopter? Does linux latest kernels have no support for this wifi adopter??

5

Actually there was no support in the kernel for this adapter until 5.9, hence the need to install the rtl8821ce module separately. In 5.9 the module rtw88_8821ce is integrated in the kernel. However rtw88_8821ce does not seem to support all the versions of the hardware yet.

6

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