Thanks gsirit, editing the alsamixer fixes it, but controlling the increase and decrease of the volume levels still remains an unsolved problem. Even after you edit the volume level using the command line: alsamixer -c 0 to the volume you want, I still cant control the increase or decrease of volume. Not sure why though.
x-maemo.alsa_sink.mixer_control = "HP DAC:off,Headphone:off,Earphone:off"