I propose a workaround (which is not very elegant)
When you are using a kernel 5.0.0.21 or higher
sudo modprobe -r r8822be rtwpci
sudo modprobe r8822be rtwpci
In this case, you recover the wifi
and if you type
lspci -nnk | grep 0280 -A3
you will see
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8822BE
802.11a/b/g/n/ac WiFi adapter [10ec:b822]
Subsystem: AzureWave RTL8822BE 802.11a/b/g/n/ac WiFi adapter [1a3b:2950]
Kernel driver in use: r8822be
Kernel modules: rtwpci, r8822be
If you try the same command before this trick I obtain
Kernel driver in use: rtw_pci
By changing the loading order of the modules, the wifi works again.
IF you know a more elegant way to load the modules, I am very interested
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https://bugs.launchpad.net/bugs/1838133
Title:
realtek r8822be kernel module fails after update to linux kernel-
headers 5.0.0-21
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