Double music playing

[jodlajodla]

Hello!

I have problem with my computer, which playing music on audio output (my speakers) and motherboard speaker (intergrated). I need to switch off motherboard speaker, because I have speakers for music and I can switch on it when I need it. I tried to switch off motherboard speakers in BIOS, but there is no this option. In Ubuntu audio control panel is no any option to switch off it.

Please help me

Thank you!

[lidex]

Use a mixer to mute/unmute/adjust levels.
Alsamixer
Using a Terminal="Applications->Accessories->Terminal"

 alsamixer

Press <F6> to select the correct soundcard.
Press <F3> to show playback levels. <F4> selects capture levels [or use <Tab>]
Use the left/right arrow keys to select and up/down arrow keys to change levels. <M> to mute/unmute.

Gnome-alsamixer
Using Alt+F2 run dialog

 gnome-alsamixer

Use 'Edit -> Sound Card Properties' menu to enable elements.
Soundcard tab to select / adjust levels.
To install:

sudo apt-get install gnome-alsamixer

[jodlajodla]

If I mute headphones there is no sound, but if I set headphones to minimal level there is little music on motherboard speaker. Other levels haven't got any effect. What can I do?

Thank you!

[jodlajodla]

Please help me, because I really need this information. Thank you!

[lidex]

Use the alsa-info-script to provide detailed information.
Run this command in a terminal:

wget http://www.alsa-project.org/alsa-info.sh -O alsa-info.sh && bash alsa-info.sh

Enter your user password when prompted. Choose the upload option and provide a link for the output.