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?
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