I observe this on my XPS 13 9360. As mentioned by others, the headphone hissing goes away when I mute the system or when I run "amixer -c0 sset 'Headphone Mic Boost' 10dB". I created an even in /etc/acpi/events to call run this whenever headphones are inserted so that it persists after reboot.
Has anyone had luck advising Dell of the suspected hardware issue? James -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654448 Title: Dell XPS 13 9350/9360 headphone audio hiss To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1654448/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
