Solution for Ubuntu without sound __ubuntu

Just updated the computer, loaded with n packets, about 10 a few g content, behold, unexpectedly no sound, search a bit, to find a more reliable solution.

Enter terminal input:
aplay-l
If similar content is displayed successfully:
card 0:IXP [ati IXP], device 0:ati IXP AC97 [ATI IXP AC97]
Subdevices:1 /1
Subdevice #0: Subdevice #0
0:ixp [ati IXP], device 1:ati IXP IEC958 [ati IXP IEC958 (AC97)]
Subdevic ES:1/1
Subdevice #0: Subdevice #0
is not displayed successfully:
Aplay:device_list:221:no soundcard found ...
If not successful, look down.
Remove system self-contained sound module
sudo apt-get--purge remove linux-sound-base alsa-base alsa-utils
Reinstall and install the latest module:
sudo apt-get i Nstall linux-sound-base alsa-base alsa-utils
may not be able to enter the GDM graphics login window after reboot.
Ubuntu user input
sudo apt-get install GDM ubuntu-desktop
Xubuntu user input:
sudo apt-get install GDM xubuntu-deskt Op
Reboot.
Install ALSA module:
sudo apt-get install build-essential linux-headers-$ (uname-r) module-assistant alsa-source
Configure once br> sudo dpkg-reconfigure alsa-source
There will be a blue window asking if you are installing.
Select Yes
to then ask about the sound card model you installed.
If you know the model you want to install, choose the one you want, but select all.
If nothing goes wrong, it's a success.
Please reboot your computer to hear the beautiful sound.