Husse, when I try as you suggest the keyboard options have default setting in XFCE linking aumixer to XF86audio. See screenshot attached. Similar screenshot for Gnome.
Zaheermk, I'm almost certain that audio settings management was turned off in XFCE when system installed and in this config the media keys controlled the sound. Somehow this has now broken. It is certainly turned off in Gnome and all works perfectly.
It's not a big problem but I'm curious to know what caused the change.
- Screenshot-XFCE.png (142.74 KiB) Viewed 1078 times
- Gnome_settings.png (237.52 KiB) Viewed 1070 times