Manual wifi configuration with buster

[stereomaton]

I had problems to connect with my WiFi dongle with the buster image.
It looks like the wlan0 interface is created by the system, but there is a problem with the GUI and more probably with the wpa/dbus gateway.
I suspect that it is linked with the fact that this dongle uses a "wext" driver not handled, but I did not manage to make it work with the regular way.

I finally managed to make the dongle work (without gui), so I document the simple steps:

1) Create a /etc/wpa_supplicant/wpa_supplicant-wlan0.conf configuration with all the WiFi SSID you want :

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wpa_passphrase "SSID" "password" >> /etc/wpa_supplicant/wpa_supplicant-wlan0.conf

2) Enable [email protected] via systemd:

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systemctl enable [email protected]

3) Enjoy, it connects at startup.