No sound since the ubuntu 16.04 upgrade

[Vincent Tarin]

Hello,
I have a laptop set for dual boot windows10/ubuntu16.04. The sound on windows is working fine, as with the HDMI. but the internal speakers remain mutted with ubuntu. there were working fine with previous version. Please what could I do to fix it ?
Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: vincent 1545 F.... pulseaudio
CurrentDesktop: X-Cinnamon
Date: Fri May 6 20:28:15 2016
HibernationDevice: RESUME=UUID=2785a0e6-7fc4-400d-b731-9fea7c931f64
InstallationDate: Installed on 2016-05-02 (3 days ago)
InstallationMedia: cubuntu 16.04 215 intel - Release amd64
MachineType: CLEVO CO. W240EU/W250EUQ/W270EUQ
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=d24a0300-d403-4931-9d69-a89394d647b8 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic N/A
 linux-firmware 1.157
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/12/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W240EU/W250EUQ/W270EUQ
dmi.board.vendor: CLEVO CO.
dmi.board.version: V3.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd11/12/2012:svnCLEVOCO.:pnW240EU/W250EUQ/W270EUQ:pvrNotApplicable:rvnCLEVOCO.:rnW240EU/W250EUQ/W270EUQ:rvrV3.0:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: W240EU/W250EUQ/W270EUQ
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO CO.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/

[Vincent Tarin (tarin-vincent)]

Hello,

I renew my Kernel, please see the version given by the Terminal

cat /proc/version
Linux version 4.6.0-040600rc2-generic (kernel@tangerine) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #201604031130 SMP Sun Apr 3 15:32:46 UTC 2016

I must say that while the installation, many error occured. I decided to boot from the Grub to that new Kernel.

But unfortunately, still no sound...

Would it be reasonable to downgrade the Kernel which goes with a Ubuntu version which makes my sound works ?

[Vincent Tarin (tarin-vincent)]

Many thanks

[penalvch (penalvch)]

Vincent Tarin, could you please test the latest mainline kernel (4.7-rc1) and advise to the results?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]