Guys when i plug my headset (Marshall Major II) the Dolby Atmos dont work and same for the super Hi-Fi mode am I alone to have this prob ?
Have you already tried Wipe Cache Partition?
Try this, plug in the headphones.
Open the sound settings and go to the hi-fi menu.
Press the play symbol and let the tune run while it is running, pull down the status bar and change the sound settings, mute, vibration, sound.
Then activate Dolby from the status bar and set it to dynamic.
Switch occasionally in hi-fi settings between standard and super if the sound breaks briefly while you're switched then it works.
While you are switched to dolby should be disabled and the sound is not on vibration or silent.
This may sound a bit strange, but that's how I solved the problem with myself.