I read and executed the DebuggingSoundProblems, so collecting the next informations:

smile@smile-laptop:~$ vi /etc/modprobe.d/alsa-base.conf
smile@smile-laptop:~$ grep "^Codec\|^Vendor Id\|^Subsystem Id\|^Revision Id" /proc/asound/card*/*codec*{,/*} | grep -B2 -A1 $(lspci -nv | grep -A1 0403 | grep Subsystem | sed 's/://g' | awk '{ print $2 }')
grep: /proc/asound/card*/*codec*/*: No such file or directory
/proc/asound/card0/codec#0:Codec: Analog Devices AD1984A
/proc/asound/card0/codec#0:Vendor Id: 0x11d4194a
/proc/asound/card0/codec#0:Subsystem Id: 0x103c3613
/proc/asound/card0/codec#0:Revision Id: 0x100400
smile@smile-laptop:~$ cat /proc/asound/cards
 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0x54400000 irq 16
smile@smile-laptop:~$ lsmod | grep snd
snd_hda_codec_analog    79680  1 
snd_hda_intel          31880  2 
snd_hda_codec          87584  2 snd_hda_codec_analog,snd_hda_intel
snd_hwdep               9352  1 snd_hda_codec
snd_pcm_oss            44704  0 
snd_mixer_oss          18976  1 snd_pcm_oss
snd_pcm                93160  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy           3460  0 
snd_seq_oss            33440  0 
snd_seq_midi            8192  0 
snd_rawmidi            27360  1 snd_seq_midi
snd_seq_midi_event      8448  2 snd_seq_oss,snd_seq_midi
snd_seq                60608  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              26992  2 snd_pcm,snd_seq
snd_seq_device          8308  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd                    77096  16 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore               9088  1 snd
snd_page_alloc         10928  2 snd_hda_intel,snd_pcm
smile@smile-laptop:~$ pwd
/home/smile
smile@smile-laptop:~$ vi alsa-info.sh
smile@smile-laptop:~$ chmod +x alsa-info.sh 
smile@smile-laptop:~$ ./alsa-info.sh 
ALSA Information Script v 0.4.49
--------------------------------

This script will collect information about your ALSA installation and sound related hardware, to help diagnose your problem.

By default, the collected information will be AUTOMATICALLY uploaded to a www.alsa-project.org site.
If you do not wish for this to occur, run the script with the --no-upload argument

Do you want to run this script? [y/n] : y
										Newer version detected: 0.4.58
To view the ChangeLog, please visit http://www.alsa-project.org/alsa-info.sh.changelog
ALSA-Info script has been updated. Please re-run it.
smile@smile-laptop:~$ ./alsa-info.sh 
ALSA Information Script v 0.4.58
--------------------------------

This script visits the following commands/files to collect diagnostic
information about your ALSA installation and sound related hardware.

  dmesg
  lspci
  lsmod
  aplay
  amixer
  alsactl
  /proc/asound/
  /sys/class/sound/
  ~/.asoundrc (etc.)

See './alsa-info.sh --help' for command line options.

Automatically upload ALSA information to www.alsa-project.org? [y/N] : y
Uploading information to www.alsa-project.org ...  Done!

Your ALSA information is located at http://www.alsa-project.org/db/?f=30ea928e0f7a053f2308e2c67ceba7881e8497f5

Please inform the person helping you.

smile@smile-laptop:~$