This issue happened since 2.0, I patched the EXE manually as explained in some reddit posts (changing some byte value). Then keyboard and mouse were usable, whereas it was wrongly detecting a joypad before.

But since 2.1 update replaces the main cyberpunk2077.exe, it doesn't work anymore. And it can't be patched the same way...

So I'm left with a game detecting a joypad when I have none plugged, and I can't select mouse+kb instead.
Why didn't they just leave the user chose the input instead of making this faulty auto detection ??


EDIT: found the culprit, I had unplugged a bluetooth usb key and there was a "ghost" wireless controller still appearing under my devices... plugged the key again and it disappeared. Problem solved now CP doesn't detect this phantom device... Still I wish I was given the choice of input in the game menus.