Ubuntu sound conflict sound mixing

Symptoms:

1. When some sound software is opened, other sound software has no sound.

2. More serious: I don't know what software is occupying the sound. When I use totem to play a movie,"He audio device is busy. Is another application using it? "Warning: when playing rhythmboxbo, all music files are skipped due to an error.

 

Solution:

Reference: http://wiki.ubuntu.com.cn/Ubuntu%E5%B8%B8%E8%A7%81%E9%97% AE %E7%AD%94

First: sudo apt-Get install libesd-alsa0
Second: sudo gedit/etc/asound. conf (newly created)
Enter:
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
}
}
(The above files can run normally on most sound cards... Although I successfully tested three different sound cards, I still cannot ensure that they can make all sound cards run properly)
Third: sudo gedit/etc/esound/ESD. conf (Backup existing files)
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 =