Ubuntu can identify sound cards but does not provide a sound solution

Configure alsa (If your sound card exclusive, perform this step) sudoapt-getinstallalsa-osssudogedit/etc/asound. conf Add the following content: pcm. card0 {typehwcard0} pcm .! Default {typeplugslave. pcm "dmixer"} pcm. dmixer {typedmixipc_key1025 configure alsa (if you have an exclusive sound card, perform this step)
Sudo apt-get install alsa-oss
Sudo gedit/etc/asound. conf

Add the following content:
Pcm. card0 {

Type hw

Card 0

}

Pcm .! Default {

Type plug

Slave. pcm "dmixer"

}

Pcm. dmixer {

Type dmix

Ipc_key 1025

Slave {

Pcm "hw: 0, 0"

Period_time 0

Period_size 1024

Buffer_size 4096

Periods 128

Rate 44100

}

Bindings {

0 0

1 1

}

}

Modify the ESD configuration file:
Sudo gedit/etc/esound/esd. conf

Changed:
[Esd]

Auto_spawn = 1

Spawn_options =-terminate-nobeeps-as 2-d default

Spawn_wait_ms = 100

# Default options are used in spawned and non-spawned mode

Default_options =