The User Token created in ubuntu does not support sound Device setup.
Source: Internet
Author: User
Users created in Ubuntu (except those created during system installation) cannot use sound devices. If you want to listen to music, the root user (or the user who can use the sudo command) must add the user to the audio and video groups. The specific method is to edit the/etc/group file and find the row where audio and video are located, after adding a comma at the end and changing the user name, it should be like this: audio: x: 29: dingjun, testvideo: new users in Ubuntu (except those created during system installation ), the speaker cannot use a sound device. To listen to music, the user must be added to the audio and video groups by the root user (or the user who can use the sudo command ).
The specific method is to edit the/etc/group file to find the row where audio and video are located, and add a comma at the end and the user name.
The change should be like this.
Audio: x: 29: dingjun, test
Video: x: 44: dingjun, test
In addition, new users cannot use the sudo command. If you want a user to use The sudo command to add it to the admin group, you can.
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