Alarm does not work after upgrade

[AC Question]

Alarm vibrates but no sound now. I checked the alarms and the ring tones, all work. In the morning, it vibrates only.
Hating marshmallow, messaging app is so slow and twitchy.

 

[H3aTeRzz]

Hiya!

Try entering recovery and wiping the Cache Partition. No data loss will occur. If that doesn't work, its possible, as we've seen more and more with MM update, you'll need to do a Full Factory Reset. IF YOU USE FFR, BE SURE TO BACKUP YOUR PHONE'S PERSONAL DATA.

Chris