ubuntu 12.04 sound not working in applications

Posted by user109887 on Ask Ubuntu See other posts from Ask Ubuntu or by user109887
Published on 2012-11-22T09:50:26Z Indexed on 2012/11/22 11:14 UTC
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12.04

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sound

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multimedia

I run Ubuntu on a DELL Vostro 3500 laptop. Everything was working perfectly since this morning, after an update... I can't play any multimedia sound anymore, that includes youtube and others, mp3 in Rythmbox, sound of video in VLC. I can see my device in the setting window and I can play tests sound, but nothing else. Any idea?

EDIT: I'm switching very often from to HDMI output, which is deconnected right now. I've tried running VLC, and in the audio menu, you can choose the output so now I can listen to music via VLC but not with other programs.

Looks like ubuntu is not totally switching the audio device after unplugging the HDMI cable. Is there any command line which can do so?

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