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[Bug 1577288] Re: HDMI audio playback noise observed on AMD Polaris 10/11 GPU

 

This bug was fixed in the package linux - 4.4.0-24.43

---------------
linux (4.4.0-24.43) xenial; urgency=low

  [ Kamal Mostafa ]

  * CVE-2016-1583 (LP: #1588871)
    - ecryptfs: fix handling of directory opening
    - SAUCE: proc: prevent stacking filesystems on top
    - SAUCE: ecryptfs: forbid opening files without mmap handler
    - SAUCE: sched: panic on corrupted stack end

  * arm64: statically link rtc-efi (LP: #1583738)
    - [Config] Link rtc-efi statically on arm64

 -- Kamal Mostafa <kamal@xxxxxxxxxxxxx>  Fri, 03 Jun 2016 10:02:16 -0700

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-1583

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https://bugs.launchpad.net/bugs/1577288

Title:
  HDMI audio playback noise  observed on AMD Polaris 10/11 GPU

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  Steps to reproduce :

  1. Install Ubuntu 16.04 and make sure AMDGPU driver is loaded for Polaris 10/11 GPUs.
  1.Connect  the audio capable monitor via HDMI or DP.
  2.Install vlc player
  3.Select HDMI as default audio endpoint
  4.Play any audio file using vlc

   Expected:
      Audio should be played smoothly

  Actually:
      Along with audio play-back noise output was observed

  FIX:  The fix is submitted to upstream. The  commit hash #8eb22214b7cb0c0a28be6caf3b81201629d8ea7c is in torvalds master branch tree :
  https://github.com/torvalds/linux/commits/master/sound/pci/hda/hda_intel.c

  Please pick this commit. The commit was also sent to stable kernel
  release.

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