Ubantu lost sound after updating packeges
I am using Ubantu9.04 and before few days I have tried installing amsn.It prompted to dependencies for following packages :
After installing that I have lost sound,and the error was :
"The volume control did not find any elements and/or devices to control. This means either that you don't have the right GStreamer plug-ins installed, or that you don't have a sound card configured."
gives output - sound card not found
but lspci -v - list the sound card
What should be the problem ?