i have realtek 8188eus usb adapter, it works in buster
but after reboot, it can't be recognized, i have to unplug and plug usb
adapter to help detection. this isn't big inconvenience for me because i
rarely reboot
my problem is bullseye installer can't detect it even after i unplug and
plug it. i run "modprobe r8188eu" in installer's terminal, it doesn't
help detection. lsusb command doesn't exist. if wifi isn't setup by
installer, then i am unable to setup it after installation because of
some debian bug
Which installation medium are you using? I have a RealTek WiFi adapter and it requires the non-free installer for binary blobs to work.