On 2026-09-14 19:27:31 -0500, David Wright wrote: > Chris reports that these keyboards produce output from xev when > Fn is typed alone. If your keyboard looks like one of these, it > might be quite likely that lack of output means that pressing Fn > is not being seen at all, by firmware or OS.
I've tested the Fn key of 2 keyboards with evtest and xev. With one of them, the Fn key produces lines like Event: time 1789491077.465131, type 4 (EV_MSC), code 4 (MSC_SCAN), value ff0003 Event: time 1789491077.465131, type 1 (EV_KEY), code 464 (KEY_FN), value 1 Event: time 1789491077.465131, -------------- SYN_REPORT ------------ Event: time 1789491077.553106, type 4 (EV_MSC), code 4 (MSC_SCAN), value ff0003 Event: time 1789491077.553106, type 1 (EV_KEY), code 464 (KEY_FN), value 0 Event: time 1789491077.553106, -------------- SYN_REPORT ------------ with evtest. But the Fn key of the other keyboard produces nothing. And xev shows nothing with either keyboard. -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)
