@spike speigel: The tlp issue in the arch Linux wiki is unrelated. The point I was that when tlp is installed and no audio is currently playing, tlp turns off the sound card and thus the hiss disappears. The second point I was trying to say: Of course the white noise is audible when nothing is playing, but only if audio is not muted.
@Kai-Heng Feng: Unfortunately I can't boot your kernel (BTRFS error: could not find root 8). Could you give me the applied patch or supply a more recent kernel build? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1654448 Title: XPS 13 9360, Realtek ALC3246, Headphone audio hiss Status in alsa-driver package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Status in pulseaudio package in Ubuntu: Confirmed Bug description: Pertaining to 16.04 on a dell XPS 13 9360 ii alsa-base 1.0.25+dfsg-0ubuntu5 Advanced Linux Sound Architecture Driver Version k4.4.0-57-generic. When headphones are plugged in, there is a clearly audible hiss (white noise). This is present as soon as the headphones are plugged in, whether 'headphones' or 'headset' are selected from the pop-up box. Using alsamixer to debug the issue reveals that it is related to "Headphone Mic Boost" - the default setting is: dB gain 0.00, 0.00. If this is changed to: 10.00, 10.00 (one notch up) the hiss disappears. 20.00, 20.00 cause a louder hiss and 30.00, 30.00 causes an even louder hiss with high frequency audio artifacts. When the headphones are removed and plugged back in the Headphone Mic Boost setting returns to dB gain 0 and the problem also returns. This (problem and workaround) has been reported in the wild: https://news.ycombinator.com/item?id=13050843 and https://www.reddit.com/r/Dell/comments/4j1zz4/headphones_have_static_noise_with_ubuntu_1604_on/ for example To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1654448/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
