I have no sound after upgrading from 12.2 to 13.1

2 days ago I upgraded to 13.1 from 12.2. After the upgrade I lost my internet connection. Got that problem solved yesterday. Today I find no sound. I am frustrated to say the least. I have tried turning off pulse sound, but that did not help. I also did the one click install that automatically installs the most popular codecs, but that did not solve my problem. Do all distributions of Linux suffer these types of birthing pains? Can anyone help get me started on the right track for getting sound? Thanks. The built-in sound card is HMDI compatible.
John