I tried this workaround and it fixed the problem. Still it have to be fixed in the kernel.
** Attachment added: "Alsa info kernel 3.16.0-30-generic with workaround" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1315770/+attachment/4318626/+files/alsa-info-kernel-3.16-with-workaround.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1315770 Title: [Dell Precision M3800, Realtek ALC668, Black Headphone Out, Left] Strong background noise To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1315770/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
