Fedora 36 Workstation Gnome HP DV7 touch sensitive media keys no longer working

Since some days the touch sensitive media keys (not on the built keyboard!) on my HP DV7-2140Eg notebook under Fedora 36 Workstation current Gnome version no longer works. The special Fn keys for media playing works fine. What could be the reason for it?
These touch sensitive keys on my HP HDX-18 notebook work fine under the same OS (F36 Gnome). Thank you for help.