no sound available ,pavucontrol reports that: "sink is not receving input,treated as a widget event"

[Jason Dean]

Despite repeated attempts to adjust ATI HD BIOS settings,sound has not returned. I suspect problem originated when changing setttings from "AC97" in BIOS,to "HD" ,in terms of front panel port for headphones. Interesting,problem appeared in VLC player initially as noise over otherwise normal movie sound..but Amarok player sound initially unaffected. Later,sound disappeared completely.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: pavucontrol 0.99.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sat Dec 3 18:45:26 2011
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=en_CA:en
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: pavucontrol
UpgradeStatus: No upgrade log present (probably fresh install)