[ubuntu] Ubuntu 12.04 and Lenovo G780 headphone jack not working

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http://ubuntuforums.org – Hi, I run Ubuntu 12.04 and have Lenovo G780 laptop. When I plug headphones to jack the sound mutes but you can't hear anthing from the headphones, I tried different headphones. I ran a script I found on of the help pages here: Code: $ wget http://www.alsa-project.org/alsa-info.sh -O alsa-info.sh && bash alsa-info.sh --2012-12-30 21:28:46--  http://www.alsa-project.org/alsa-info.sh Resolving www.alsa-project.org (www.alsa-project.org)... Connecting to www.alsa-project.org (www.alsa-project.org)||:80... connected. HTTP request sent, awaiting respon (Hardware)