Codec: Conexant CX20585 - card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] - headphone jack and microphone not working on Lenovo Ideapad Z560 in Ubuntu 10.10 - using ALSA driver version 1.0.23

I am using Ubuntu 10.10 on Lenovo Ideapad Z560.

Sound: There are some issues with the headset and microphone not being recognized. I hear sound from the speakers perfectly. The issue is that I hear no sound from the headsets. Instead sound comes out of the speakers despite the fact that the headset is plugged in.

Useful Info:

roydon@ubuntu:~$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.23.

roydon@ubuntu:~$ cat /proc/asound/card*/codec#* | grep Codec
Codec: Conexant CX20585
Codec: Nvidia GT21x HDMI
Codec: Nvidia GT21x HDMI
Codec: Nvidia GT21x HDMI
Codec: Nvidia GT21x HDMI

roydon@ubuntu:~$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.23.
roydon@ubuntu:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: NVIDIA HDMI [NVIDIA HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: NVIDIA HDMI [NVIDIA HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: NVIDIA HDMI [NVIDIA HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0