Bug 11395

Summary:	audio playback broken on skylake
Product:	[Build System, Metadata & Runtime] BSPs	Reporter:	Jussi Kukkonen <jku>
Component:	bsps-meta-intel	Assignee:	Jussi Kukkonen <jku>
Status:	RESOLVED INVALID	QA Contact:
Severity:	normal
Priority:	Medium+	CC:	california.l.sullivan, sgw
Version:	unspecified
Target Milestone:	2.4 M1
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	Regression (Used to work)
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description Jussi Kukkonen 2017-04-20 07:25:10 UTC

Audio playback (at least mp3) "works" but sounds horrible on my skylake NUC. Same files on the same image sound perfect on a haswell NUC. The problem is like massive "scratching" almost completely drowning out the actual music.

I'll try to find an mp3 I can attach/link to but so far everything sounds broken except .wavs, even blenders sintel_trailer video (which presumably isn't mp3 but ogg) sounds awful.

Tested on:
* D54250WYK works fine. This is an old Haswell model
* NUC6i5SYH sounds bad (Skylake)

Note that bug 11311 currently prevents testing this on the media player (visualizations not working stops playback): I've used "gst-play --volume 100 <filename>" to test

I don't know if this is a meta-intel problem -- I'm at a loss on how to debug at all as there are no errors anywhere: gstreamer at least thinks it's doing a great job playing the music.

Comment 1 Jussi Kukkonen 2017-04-20 07:43:11 UTC

Hmm, even this PCM file shows the problem:

  http://www.music.helsinki.fi/tmt/opetus/uusmedia/esim/a2002011001-e02.wav

so does every encoded version on the page (http://www.music.helsinki.fi/tmt/opetus/uusmedia/esim/index-e.html).


Curiously a "voice_dialing.wav" PCM file I had on my machine sounds fine.

Comment 2 Jussi Kukkonen 2017-04-20 12:00:25 UTC

I tested with a morty build and I have the same sound issue there -- it sounds unlikely we wouldn't have noticed this as I've used this same hardware and so does QA...

I also tested HDMI audio and that sounds fine. So only the output from headphone jack is broken.

I wonder if my hardware broke?

Comment 3 Saul Wold 2017-04-20 15:04:38 UTC

Confirmed to work on a NUC5i5RYH

Can cal you please test on your NUC6 device with headphones.

Comment 4 California Sullivan 2017-04-20 21:10:30 UTC

I tested the .wav you linked previously:

  http://www.music.helsinki.fi/tmt/opetus/uusmedia/esim/a2002011001-e02.wav

I can hear some scratchiness (or maybe reverb) through headphones on the NUC6. It was not overwhelming as you described, however. Through HDMI it sounded absolutely awful, but that could just be the crappy monitor I had it plugged into. I played the file on my workstation and it sounded clear.

Comment 5 Jussi Kukkonen 2017-04-21 06:42:02 UTC

(In reply to comment #4)
> I can hear some scratchiness (or maybe reverb) through headphones on the
> NUC6. It was not overwhelming as you described, however.

Thanks. I'm thinking this may really be a hardware issue on my side then... The output is bad enough to be only barely recognizable as music.

I'm fine with keeping this open (now assigned to me) until I can confirm this, maybe with another OS or something.

Comment 6 Jussi Kukkonen 2017-05-16 07:46:53 UTC

This worked on another very similar hardware, I'm closing this as invalid (broken audio output)