Wifi doesn't work on boot, but (usually) connects fine after forgetting network

[Arrababiski]

Each time I read issues about wifi strange behaviour, connection drops, speed loss, etc, I recommend first try disabling power saving and Mac randomization, specially with Realtek chipsets.

RTL8822CE Instability even with newest kernel

You can try two workarounds. Turn off wifi power save first. Create .conf file: sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf And copy these two lines inside it: [connection] wifi.powersave = 2 If the issue remains, turn off Mac Randomization. Create .conf file: sudo nano /etc/NetworkManager/conf.d/disable-random-mac.conf Copy these two lines inside: [device] wifi.scan-rand-mac-address=no Hope this can solve your problem.