Kernel 6.0.2-2 - Some FN-Keys don't work before laptop slept once in hibernate mode


I’m having an issue with some FN-Keys on my Lenovo laptop. The brightness keys (F5+F6) don’t work after a “normal” start.

Using the showkey-command, no keyboard event is shown when pressing this keys. After waking up the laptop (only when it slept in hibernate mode, not “normal” sleep), the keys start working.

Same problem with earlier kernel versions. Does anyone have an idea what’s wrong?