Comment 2 for bug 817190

Thanks for reporting this bug. Could you please describe your environment a bit more? You said 'After installing ubuntu server and attempting to also install an ubuntu client using virt-manager' - did you install both of those as kvm VMs? And did you have no sound issues before you created these VMs? Which releases are you using for the VMs?

Can you give us the xml definition of the VMS? (virsh list to get the VM names, then 'virsh dumpxml nameX' to dump the definitions)

If kvm did something to confuse your host's audio daemon, then restarting it may fix it. Does rebooting the host fix your problem?