Comment 28 for bug 1575078

I have the same problem. Suspend/wake works if audio is already playing. Funny thing is that it was all working fine till one day it stopped.

Dell Precision 5510
kernel 4.8.0-34-generic
Ubuntu 16.04

http://www.alsa-project.org/db/?f=d305b056d9ac040c0ca4b360e0cf16007bae81ea