Public bug reported:

When i play music, through my built in speakers, i don't have an issue. 
But when i play it through my headphones is sometimes have problems. The music 
plays a lot slower, like in slow motion. When i switch to my builtin speakers, 
i notice that the rhythm is again what it should be. switching back to my 
headphones, it's again a lot slower.
Once the issue is happening, i need to reboot my computer to have normal 
playback on my headphones again.

For some reason, i have the feeling that the issue is occurring 90% of
the time after the computer has been locked, or in hibernation. But
there are moments when it's already slow at startup.

my setup: laptop, connected to external screen (Dell UltraSharp U2515H) by 
HDMI. Headphones connected to the external screen. 
But if i connect the headphones straight away on the laptop, i have the same 
issue.

So to conclude:
When i turn on my music i expect that the playback speed of youtube or 
livestreams should be at normal rate, and that the rate does not change when i 
switch from headphones to builtin speakers or vice versa


==================================
Description:    Ubuntu 16.04.2 LTS
Release:        16.04
==================================
alsaplayer-alsa:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa-base:
  Installed: 1.0.25+dfsg-0ubuntu5
  Candidate: 1.0.25+dfsg-0ubuntu5
  Version table:
 *** 1.0.25+dfsg-0ubuntu5 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        500 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages
        100 /var/lib/dpkg/status
alsa-source:
  Installed: (none)
  Candidate: 1.0.25+dfsg-0ubuntu5
  Version table:
     1.0.25+dfsg-0ubuntu5 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages
alsamixergui:
  Installed: (none)
  Candidate: 0.9.0rc2-1-9.1
  Version table:
     0.9.0rc2-1-9.1 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsaplayer-output:
  Installed: (none)
  Candidate: (none)
  Version table:
alsaplayer:
  Installed: (none)
  Candidate: (none)
  Version table:
alsaplayer-jack:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsaplayer-common:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa:
  Installed: (none)
  Candidate: (none)
  Version table:
alsaplayer-esd:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsaplayer-gtk:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa-utils:
  Installed: 1.1.0-0ubuntu5
  Candidate: 1.1.0-0ubuntu5
  Version table:
 *** 1.1.0-0ubuntu5 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status
alsaplayer-text:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa-firmware-loaders:
  Installed: (none)
  Candidate: 1.1.0-0ubuntu1
  Version table:
     1.1.0-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages
alsaplayer-xosd:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa-tools:
  Installed: (none)
  Candidate: 1.1.0-0ubuntu1
  Version table:
     1.1.0-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsaplayer-nas:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsaplayer-oss:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsaplayer-interface:
  Installed: (none)
  Candidate: (none)
  Version table:
alsaplayer-daemon:
  Installed: (none)
  Candidate: 0.99.81-1ubuntu3
  Version table:
     0.99.81-1ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa-tools-gui:
  Installed: (none)
  Candidate: 1.1.0-0ubuntu1
  Version table:
     1.1.0-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
alsa-oss:
  Installed: (none)
  Candidate: 1.0.28-1ubuntu1
  Version table:
     1.0.28-1ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-66.87-generic 4.4.44
Uname: Linux 4.4.0-66-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC1D0c:   stijn      2402 F...m pulseaudio
 /dev/snd/controlC1:  stijn      2402 F.... pulseaudio
 /dev/snd/controlC0:  stijn      2402 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Mar 24 10:01:46 2017
InstallationDate: Installed on 2015-09-21 (549 days ago)
InstallationMedia: It
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed
Symptom_Card: Built-in Audio - HDA Intel HDMI
Symptom_Jack: Digital Out, HDMI
Symptom_Type: None of the above
Title: [Latitude E5550, Intel Broadwell HDMI, Digital Out, HDMI] Playback 
problem
UpgradeStatus: Upgraded to xenial on 2016-11-08 (135 days ago)
dmi.bios.date: 01/05/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0JPRM5
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA05:bd01/05/2015:svnDellInc.:pnLatitudeE5550:pvr01:rvnDellInc.:rn0JPRM5:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5550
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages xenial

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https://bugs.launchpad.net/bugs/1675703

Title:
  [Latitude E5550, Intel Broadwell HDMI, Digital Out, HDMI] Playback
  problem

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