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?
Le pavlova etait un plat de nouvelle zealand. Si Bluey connais la, c'est parce que la recette etait vole.
Add accents to your pleasing...
The best way to learn it, is to set yourself a goal/problem, define as best as possible how many unique issues that problem can be broken into, then start solving them one-by-one, periodically stopping to evaluate how they fit together.
Learning the best languages and structures to use will come as result of this.
^^ that person first though.
That may not be their intended purpose, but it is something we take note of when responding to an MVA. "Who else was in the vehicle" is a pretty standard question to ascertain if someone has been ejected, or is currently entrapped in the inaccessible wreckage, but if we notice a 'baby on board', we always make sure to also ask something along the lines of "where is your baby", just to be safe.
To clarify, you have a dongle paired with this keyboard permanently attached to the machine?
This is a very broad question, the answer to which will almost definitely be "yes, but", so knowing what you are trying to achieve would be helpful.
You don't. Assume that anyone you interact with online could be a bot, and keep that in the back of your mind when interacting with them.
To get a step deeper into your "how can a machine draw a circle" question. Mostly it can't. Even with an open-loop control system dragging the 'pen' at a fixed angle, you would need to have defined that curve in software somewhere, where it will be a barely-noticable set of X-Y steps, not a pure curve, otherwise you cannot be sure it would return to the origin.
Luckily, you only need a few decimals of pi to approximate that far beyond what any human eye could discern.
Break any digitally defined curve down far enough and you will see those discrete steps, but with modern technology, we just never notice it.
Literally our lead developer:
"you wouldn't be so confident in the results if you saw the half-assed code I whipped up for than in a single afternoon five years ago"
Eh, it's one of those perpetual rivalry things where the answer will probably never be known, and doesn't really matter except when it comes to petty squabbles between nations.