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


Ok, with stock kernel, support(graphics,display) for Polaris GPU is not
present. This support will be in kernel 4.7.  That is the reason for no
audio endpoint. Please pick the audio commit.

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

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

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

      Audio should be played smoothly

      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 :

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

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