My money is on Putin knowing that his war is not winnable, but not being able to save face internally by admitting as such. If he can poke the bear enough with incursions into NATO countries like the last few days though, he might be able to draw NATO into direct conflict, at which point a withdrawal/surrender can be sold as “We were attacked by the big bad NATO and had to consolidate our local defenses” rather than a defeat by what should have been an inferior force.

That answers my question. If the USB dongle never disconnects from the machine, then I wouldn’t expect anything to show in dmesg, as the ‘sleep mode’ is likely occurring downstream of the USB dongle.

Are there any config utilities that came with it? Failing that, maybe wireshark the dongle and see if there is any sort of sleep/wake signal being passed back through to the host machine?

To clarify, you have a dongle paired with this keyboard permanently attached to the machine?