Not much, the Unifying dongles are very power efficient.
Nope, it appears to be stored on both Unifying devices (the dongle, and what it's paired to), and you cannot have the same device paired to multiple dongles (unfortunately). If you only have one device and dongle and you are moving the dongle between your Pi and another computer, then it should just work. If you are trying to use a different dongle on the Pi and another computer with the same Unifying keyboard, that will never work (believe me, I've tried).Regarding pairing, does the dongle itself retain pairing information? I would think this information is stored on the receiving computer
Aha! I suspect we have found the problem. Well, part of it anyway. When you paired the keyboard to another dongle you essentially unpaired the original dongle. I'm not sure why it didn't work for you in the first place, but you definitely need to re-pair it with the dongle you are using with the Pi now.Not sure if it matters, but I use another Logitech dongle for my keyboard and mouse on my main computer in my office. Only the keyboard and mouse I have paired are showing up in the connection list of the unifying software. I paired the K400+ to this computer with no problems and then unpaired it when I was testing this issue.
Code: Select all
sudo apt install solaar
Think about that for a moment. Keyboard paired with two dongles on different computers. What happens when you are using one computer and the other is also getting the keyboard input? Nightmare, maybe I'll wake up in a moment...
Yes, I certainly understand why Logitech didn't allow it (although it could be fun, just to mess with someone ).