My new dell 5559 laptop came with Ubuntu 14.04 LTS, with kernel To install skype, I had to add i386 architecture and then got it working. Later today, there was a prompt for update, and I updated the kernel to version. From then on the sound system in my laptop has stopped working.  I am in the process of trying to troubleshoot the issue with this link, but no success yet. 

Please have a look at the thread below, where I tried different things.. 

Now, there are no soundcards found in my system.. Has anyone faced similar issues?? Please provide some ideas. 

Thank you.