Maybe this can help: Yesterday, after dist-upgrade my system (with a similar Intel hardware) the sound stopped to work. Today unchecking the two "Analog Loopback" checkboxes in the gnome volume applet, the sound works again.
Some similar comments in: https://bugzilla.redhat.com/show_bug.cgi?id=496006
Maybe this can help: Yesterday, after dist-upgrade my system (with a similar Intel hardware) the sound stopped to work. Today unchecking the two "Analog Loopback" checkboxes in the gnome volume applet, the sound works again.
Some similar comments in: /bugzilla. redhat. com/show_ bug.cgi? id=496006
https:/