Remove the required packages
sudo apt-get remove pulseaudio
sudo apt-get install esound
Now remove the 70pulseaudio file
Before removing make a backup of this file
sudo cp /etc/X11/Xsession.d/70pulseaudio /etc/X11/Xsession.d/70pulseaudio.back
sudo rm /etc/X11/Xsession.d/70pulseaudio
Now go to System -> Preferences -> Sound
Make sure they are all set to ‘Autodetect'.
The only one you will have to set manually to ALSA is ‘Sound Capture' under ‘Audio Conferencing'.
Note:-At this point Pulseaudio is now nolonger an option under these drop menus.
Go to System -> Preferences -> Sessions
Deselected or Remove the Pulseaudio Manager
Finally Your asoundrc's under your Home Directory are still configured for Pulse.
Go to your home directory using the following command
cp .asound* yourfilename
One this is done your back to ALSA's default configuration.