Sometimes after I login to my system the media keys are dead. If I logout and back in, they usually work again.
Any way fix this permanently, or at least without having to do a relog?
I'm running 5.0 Juno.
As pointed out by CameronNemo, the gnome-settings-daemon handles media key presses.
exec /usr/lib/gnome-settings-daemon/gsd-media-keys my media keys started working again.