Comment 2 for bug 1611821

As a workarount use hda-jack-retask

http://askubuntu.com/questions/832248/sound-is-not-working-in-dell-xps-all-in-one-2710-running-ubuntu-16-04

"Praise of God i could solving the problem by installing "hda-jack-retask" - open the terminal and post: [ sudo apt-get install alsa-tools-gui ] - then post: [ hdajackretask ] in the gui of "jack retasking" i found "green Headphone" set as "headphone" i checked "override" and choose "internal speaker" then i pressed the button "apply now" then "install boot override" then reboot finally, the problem solved ... I'm happy now ... thanks for every one tried to help me ... thank you very much"