Bluetooth USB Dongle in Grub

Hello everyone,
I’ve connected my bluetooth keyboard to a usb bluetooth dongle on my laptop. It’s working fine. But it would be nice if the bluetooth keyboard would also work in grub, before the full os is loaded. I’m using full disk encryption and I don’t want to use my laptops inbuilt keyboard for unlocking. So is it possible to make the usb dongle work in grub? And shouldn’t that be the default behavior? That’s the reason why I bought the usb dongle in the first place…

I have the same ‘problem’ and found out it’s not possible to use a bluetooth keyboard/mouse during boot unless your UEFI supports it. Mine doesn’t maybe yours does.

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I’ve marked the below answer as the solution to your question as it is by far the best answer you’ll get.

However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (I just want to avoid even more subjective opinions being posted and confusing you even more)

P.S. In the future, please don’t forget to come back and click the 3 dots below the answer to mark a solution like this below the answer that helped you most :
so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.

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