Very new to Ubuntu but have checked some of the other posts and tried some suggestions but keep getting the same problem. Did a clean start and the sequence of events is as follows
1.Instal Ubuntu 12.10 2.Instal VLC 3.Play songs/video without problem
Alsamixer display has Master,Headphone, Speaker,PCM, mic etc
After restart.... no sound and Alsamixer only has PCM displayed!!