Comment 26 for bug 1709708

Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote : Re: [Bug 1709708] Re: [Intel Broxton HDMI, Digital Out, HDMI] Pulseaudio detects output but produces no sound on an HDMI TV until power cycled.

> On 4 Nov 2017, at 7:29 PM, Rael Gugelmin Cunha <email address hidden> wrote:
>
> I'm using the X-Swat PPA
> (https://launchpad.net/~ubuntu-x-swat/+archive/ubuntu/updates) with mesa
> 17.2.3-0ubuntu0~16.04.0. Should I purge it in order to receive the fix?

This fix comes from kernel side, so downgrade Mesa or not should not affect it.
>
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> https://bugs.launchpad.net/bugs/1709708
>
> Title:
> [Intel Broxton HDMI, Digital Out, HDMI] Pulseaudio detects output but
> produces no sound on an HDMI TV until power cycled.
>
> Status in DRI:
> Fix Released
> Status in linux package in Ubuntu:
> Triaged
> Status in pulseaudio package in Ubuntu:
> Invalid
>
> Bug description:
> Upon bootup, the HDMI output connected to a Samsung TV shows up as an
> output. If this output is selected and a sound test run (either using
> the GUI or using aplay /user/share/sounds/alsa/Front_Center.wav) no
> sound is heard. Pavumeter does however show sound coming through.
>
> I found that sound can be fixed by allowing the display to sleep,
> waking it up, and then restarting pulseaudio (pulseaudio -k). After
> that sound output through HDMI to the TV will work until rebooted.
>
> The fix can be succesfully scripted as follows:
>
> xset dpms force off
> sleep 1
> pulseaudio -k
>
> The machine is an Intel NUC6CAYH, connected to a not particularly new
> Samsung 42" TV using an HDMI cable, running a fresh install of Ubuntu
> 16.04.
>
> In earlier attempts at fixing the issue I set pulseaudio to never let
> the sound device sleep (commented out load-module module-suspend-on-
> idle in /etc/pulse/default.pa), and also set the default sampling rate
> to 48000 (default-sample-rate = 48000 in /etc/pulse/daemon.conf). Not
> sure if these settings contributed to the fix, but they are not
> sufficient on their own.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 16.04
> Package: pulseaudio 1:8.0-0ubuntu3.3
> ProcVersionSignature: Ubuntu 4.10.0-30.34~16.04.1-generic 4.10.17
> Uname: Linux 4.10.0-30-generic x86_64
> ApportVersion: 2.20.1-0ubuntu2.10
> Architecture: amd64
> Date: Wed Aug 9 21:48:39 2017
> InstallationDate: Installed on 2017-08-06 (2 days ago)
> InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
> SourcePackage: pulseaudio
> Symptom: audio
> Symptom_Card: HDA-Intel - HDA Intel PCH
> Symptom_Jack: Digital Out, HDMI
> Title: [, Intel Broxton HDMI, Digital Out, HDMI] Pulseaudio fails to detect card
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 11/24/2016
> dmi.bios.vendor: Intel Corp.
> dmi.bios.version: AYAPLCEL.86A.0029.2016.1124.1625
> dmi.board.name: NUC6CAYB
> dmi.board.vendor: Intel Corporation
> dmi.board.version: J23203-402
> dmi.chassis.type: 3
> dmi.modalias: dmi:bvnIntelCorp.:bvrAYAPLCEL.86A.0029.2016.1124.1625:bd11/24/2016:svn:pn:pvr:rvnIntelCorporation:rnNUC6CAYB:rvrJ23203-402:cvn:ct3:cvr:
> modified.conffile..etc.pulse.daemon.conf: [modified]
> modified.conffile..etc.pulse.default.pa: [modified]
> mtime.conffile..etc.pulse.daemon.conf: 2017-08-06T22:55:35.510382
> mtime.conffile..etc.pulse.default.pa: 2017-08-06T22:51:49.639085
>
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