[Skylake Platform, Realtek ALC269VB, Speaker, Internal] No sound at all with pulseaudio - Alsa OK - Ubuntu Mate OK

[Michel-Ekimia]

We try to certify the TopStar u931 laptop which includes Skylake audio.

When going to sound preferences , speaker is never shown, only headphones, even if they are not connected

When running pavucontrol, headphones are shown plugged in and speakers are shown "unavailable" and headphones are shown as plugged although they are not.

Killing pulseaudio and going pure alsa shows that :

- If you disable "Automute" , sound goes out of the speakers properly and the "speakers" sliders works.

- But then obviously plugging a headphone does nothing.

Alsa Info here : http://www.alsa-project.org/db/?f=b067fd49f6bcc2b6287e330033f1b1f658ea08f6

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: oem 2296 F.... pulseaudio
                      oem 7591 F.... alsamixer
CurrentDesktop: Unity
Date: Fri Nov 20 18:00:31 2015
InstallationDate: Installed on 2015-11-14 (6 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Audio interne - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: oem 2296 F.... pulseaudio
                      oem 7591 F.... alsamixer
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [Skylake Platform, Realtek ALC269VB, Speaker, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/10/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.11
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: WhiteTip Mountain1 Fab2
dmi.board.vendor: Topstar
dmi.board.version: RVP7
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 9
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.11:bd09/10/2015:svnIntelCorporation:pnSkylakePlatform:pvr0.1:rvnTopstar:rnWhiteTipMountain1Fab2:rvrRVP7:cvnDefaultstring:ct9:cvrDefaultstring:
dmi.product.name: Skylake Platform
dmi.product.version: 0.1
dmi.sys.vendor: Intel Corporation
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2015-11-15T21:52:13.199491

[Michel-Ekimia (michel.ekimia)]

Good news : with pure alsa withouth pulseaudio, we can output a great sound out of the speakers. So not an alsa problem it seems.

[Michel-Ekimia (michel.ekimia)]

Works OK with Ubuntu Mate ( So some pulseaudio setup sould be different )

[David Henningsson (diwic)]

From the ALSA info it looks like the headphones are plugged in indeed.

You seem to have modified /etc/modprobe.d/alsa-base.conf (to include options snd-hda-intel model=auto). Could you try removing that, rebooting and see if that resolves the problem?

[Michel-Ekimia (michel.ekimia)]

model= auto does not change the behaviour , We had the same problem before trying it.

Actually alsa seems to work OK and we can output to speakers when we kill pulseaudio

[Michel-Ekimia (michel.ekimia)]

Hi , anybody see a solution here ? it seems Ubuntu configures pulseaudio in a way that the headphones seems plugged all the time.

Ubuntu Mate does not have this problem

[Michel-Ekimia (michel.ekimia)]

This was a Hardware bug on jack insertion detection