I just installed Jessie in an external drive on my ASUS X555 Laptop using the 3.16 DVD. I had no sound at all after installing.
Following advices on various forums, I've installed firmware-intel-sound, pavucontrol
In pavucontrol, I see the volume bar moving for the Rythmbox application, but nothing comes out of my internal speakers.
Sometimes when I boot I have sound, but after rebooting it doesn't work anymore, once I also had beeps when firefox search doesn't find what I search on a page.
Very weird problem.
Can someone help me ?