@anthonywong Referenced report seems as unrelated. On my machine, the sound is clear and loud but 10 seconds after playback ends the noise starts.
I am not familiar with specific design of the soundcard but It looks/sounds like when it suspended by the driver, analog amplifier left active picking all kind of interferences from ground line. Kernel versions 4.4.0-1x and 4.6.0RCx are affected. -- 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/1468582 Title: Noisy (pop noise + white noise) headphone audio on Dell XPS 13 (2015) Status in HWE Next: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Trusty: Fix Committed Status in linux source package in Utopic: Fix Committed Status in linux source package in Vivid: Fix Released Bug description: This was reported through community and brought up to support. They fixed the bug via kernel bug tracker. https://bugzilla.kernel.org/show_bug.cgi?id=99851 We should backport to 3.13, 3.16 and 3.19 This bug is used for tracking purposes. Please do not triage. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1468582/+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
