The RTL8821CE driver doesn't work on several recent kernels (probably since
5.9).
journalctl -b | grep 8821
mars 19 22:49:13 localhost kernel: rtw_8821ce 0000:07:00.0: Firmware version
24.8.0, H2C version 12
mars 19 22:49:13 localhost NetworkManager[639]: <info> [1616190553.7766]
rfkill2: found Wi-Fi radio killswitch (at
/sys/devices/pci0000:00/0000:00:1d.4/0000:07:00.0/ieee80211/phy0/rfkill2)
(driver rtw_8821ce)
mars 19 22:49:13 localhost kernel: rtw_8821ce 0000:07:00.0 wlp7s0: renamed
from wlan0
mars 19 22:49:14 localhost kernel: rtw_8821ce 0000:07:00.0: start vif
28:39:26:ab:b4:5d on port 0
mars 19 22:49:14 localhost kernel: rtw_8821ce 0000:07:00.0: stop vif
28:39:26:ab:b4:5d on port 0
mars 19 22:49:14 localhost kernel: rtw_8821ce 0000:07:00.0: start vif
7a:36:c4:26:1d:f1 on port 0
mars 19 22:56:07 linux.local kernel: rtw_8821ce 0000:07:00.0: stop vif
7a:36:c4:26:1d:f1 on port 0
mars 19 22:56:07 linux.local kernel: rtw_8821ce 0000:07:00.0: start vif
c2:a0:c3:48:17:58 on port 0
mars 19 23:03:00 linux.local kernel: rtw_8821ce 0000:07:00.0: stop vif
c2:a0:c3:48:17:58 on port 0
mars 19 23:03:00 linux.local kernel: rtw_8821ce 0000:07:00.0: start vif
ae:92:06:47:50:83 on port 0
mars 19 23:09:52 linux.local kernel: rtw_8821ce 0000:07:00.0: stop vif
ae:92:06:47:50:83 on port 0
...
And continues like this indefinitely
uname -a
Linux linux.local 5.11.6-1-default #1 SMP Thu Mar 11 16:11:36 UTC 2021
(7358b30) x86_64 x86_64 x86_64 GNU/Linux
rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
