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After a reboot it keeps asking for wifi password and doesn't connect to any networks, it can list networks. After a few reboot it sometimes works but usually doesn't.

lspci -knn | grep Net -A2
04:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter [10ec:b822]
    Subsystem: AzureWave Device [1a3b:2950]
    Kernel driver in use: rtw_pci

uname -r
5.0.0-37-generic

It didn't managed to connect during installation either. (it works in windows every time so its not a hardware issue)

It is a completely different problem I get a loop to type in the password and just can't connect to a network (I'v tryed the suggested fix anyway but didnt worked):

Still No wifi adapter for Realtek RTL8822BE found in 18.04

Nukleari
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  • I am 1 meter away from the router, as I said it works in windows 100% of the time, its some ubuntu thing not a problem with any hardware. by unreliable i'm saying that sometimes I turn on my pc and it miraculously works so far this happened 3 times, and it works until I turn the pc off. – Nukleari Jan 10 '20 at 22:27
  • voting to reopen as the duplicate has a very bad answer – Jeremy31 Jan 11 '20 at 17:29
  • I have a similar problem: wifi stays connected for few seconds, then disconnects and asks for password – NGsp Jan 21 '20 at 14:24
  • @NicolaG while the question was closed I re asked it here: https://askubuntu.com/questions/1202109/ubuntu-18-04-wifi-problem-2nd-try there are a few solutions there, what helped me was: sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf and echo "blacklist rtwpci" | sudo tee /etc/modprobe.d/realtek.conf reboot – Nukleari Jan 22 '20 at 16:28

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