Very nice post by @evgandr
"FreeBSD and Thinkpad-specific keys and indicators"
https://eugene-andrienko.com/it/2026/03/24/freebsd-thinkpad-specific-keys.html

FreeBSD and Thinkpad-specific keys and indicators
Thinkpad laptops, e.g. mine Thinkpad X220, has a lot of functional keys. Some of them work without any problems — they are passed by the underlying kernel to the X server and it recognizes them as a usual key symbols: XF86AudioMute, XF86AudioRaiseVolume, XF86AudioNext, etc. But some special keys are not passed to the X server from the underlying OS layers.





