PCI/internal sound card not detected

[mart1oeil]

My sound card is not even detected and alsamixer do nothing.

I tried oem-audio-hda-daily-lts-xenial-dkms - 0.201605271732~ubuntu16.04.1 https://code.launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages like it was described here https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS but it didn't worked.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat May 28 15:20:10 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-05-27 (1 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Title: PCI/internal sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/14/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.0
dmi.board.name: 0T6HHJ
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd02/14/2016:svnDellInc.:pnLatitudeE7470:pvr:rvnDellInc.:rn0T6HHJ:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7470
dmi.sys.vendor: Dell Inc.

[mart1oeil (mart1oeil)]

The sound card is a Realtek ALC3235 cf : http://www.dell.com/support/manuals/us/en/19/latitude-e7470-ultrabook/Late_E7470_OM/Audio-specifications?guid=GUID-EE1BF4E5-7FF1-4415-A32D-B8FE54B2D639&lang=en-us

[Anthony Wong (anthonywong)]

I can't see there is any PCI device from the alsainfo.txt log, if the kernel can't see the device it could be related to something that is below the kernel level. You can also upload the output of 'lspci -vvnn' for us to check.
Could you also check if there are settings in the BIOS about audio? Perhaps you can try to reset the BIOS to the default and see what happens.

[mart1oeil (mart1oeil)]

Here is the lspci -vvnn

Audio is enabled in the BIOS and I've already reset the Bios.

[AceLan Kao (acelankao)]

It's pretty like a hardware issue to me, I'll try to find the hardware to verify it next week.

[mart1oeil (mart1oeil)]

Thank you @acelankao. I have contacted the Dell support and it seemed to be a motherboard problem. They'll replace it next week.

I've change the bug status as invalid.

Thanks for your help.

[mart1oeil (mart1oeil)]

I confirmed. Motherboard have been changed and now sound is working. Bug -> invalid