first of all, I'm pretty new to this forum and gnome3.
I'm running Ubuntu GNOME 13.04 (raring) on my Sony Vaio VPCSE1V9E. My sound is working perfectly and I can control everything using alsamixer. However, there is no sound icon in my top bar and in System Settings -> Sound underneath where it says "Choose a device for sound output:" there is no element in the listbox. I also cannot use my volume-up and -down buttons on my keyboard which used to work on Kubuntu.
Thank you in advance,