@porsupah At one point my PC monitor stopped responding to brightness controls and the like. I did way too much software troubleshooting before I discovered the real culprit.
I'd accidentally brushed two of the monitor's "buttons" at the same time and activated a compltely undocumented "feature" of tutning off DDC/CI.
Sure, touch-sensitivity is neat and all, but even though the buttons may not break, the user just might.
@ElectricKeet Oh, *wow*. How on earth did that get in? At least here it was documented and has a visible, non-impeding function, however awkwardly implemented.