The problem that the sound disappears after Ubuntu Root Login

Ubuntu root logon and sound problems

1. sudo su root, and then enter the password

2. gedit/etc/lightdm. conf (you can back up it in advance ).

[Seatdefaults]

// Add ubuntu14.04 for Automatic Root Login

# Autologin-Guest = true

Autologin-user = root

Autologin-user-Timeout = 2

Autologin-session = lightdm-autologin

// Add Automatic Root Login

 

Greeter-session = unity-greeter

User-session = Ubuntu

Greeter-show-manual-login = true # manually enter the user name and password for logging on to the system

Allow-Guest = false # logon from guest is not allowed

 

Questions about sound failure

1. gedit/etc/profile

Then addPulseaudio -- start -- log-target = Syslog

 

2. Other Methods

 

For the sake of security, the sound system is disabled by default for Ubuntu as the root user.

If you want to enable it easily, because pulseaudio is not started after root login. So start it first.

Add root to the pulse and pulse-access groups:

Sudo usermod-a-g pulse-access Root

Gpasswd-a root pulse

Gpasswd-a root pulse-Access

Then:

Edit the/etc/default/pulseaudio File

 

CP-P/etc/default/pulseaudio. Bak

 

Vim/etc/default/pulseaudio

Modify the following two items:

Pulseaudio_system_start = 1

 

Disallow_module_loading = 0

 

Change to 1 and 0, indicating that the system environment is allowed and the module can be dynamically loaded.

Restart the computer and the sound will come out.