I recently installed cyanogenmod 12.1 (snapshot, 2015-09-01) on my HTC One M8. Following my habits, I tried to activate a silent mode. There was the first problem: CM only has a normal and a (total) silence mode. I was used to normal, silent but vibrating, silent and non-vibrating.
The silent modes on stock android I knew before (and on HTC's android), all made an exception for alarms, you could hear them even though the phone was silent (and I don't mean just vibrating).
What do I have to do to get a silent mode, that allows audible alarms on CM?