Public bug reported:

I updated my Surface Pro 3 From Ubuntu 17.10 to Ubuntu 18.04 (did a clean 
install) and the only  audio working was from the headphone jack.
I tried all these:
[troubleshooting 
guide](https://help.ubuntu.com/community/SoundTroubleshootingProcedure)
[this 
answer](https://askubuntu.com/questions/117842/no-sound-from-speakers-but-headphones-work)
[another 
answer](https://askubuntu.com/questions/829520/ubuntu-16-04-no-sound-from-speakers-only-headphones-working)

I went back and tested the live CD and even the live cd has no audio
through the speakers. so this must be related to 18.04. I never had
sound issues before and under windows audio still works correctly.

here is my alsa iformation http://www.alsa-
project.org/db/?f=8bf135db52610a603014779ef24041a491c8a32d

and here is how I fixed it:

renaming /etc/modprobe.d/alsa-base.conf to /etc/modprobe.d/alsa-base.bk
, then rebooting the computer fixed the my speaker sound issue.

I then restored line by line in to /etc/modprobe.d/alsa-base.conf, rebooting 
between restored lines, until all lines were back.... and ... it still worked!
so I restored the original /etc/modprobe.d/alsa-base.conf and rebooted the 
computer and everything was still working....
so I am not sure what the problem was but is now fixed.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
Uname: Linux 4.16.7-041607-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  carlosr    2267 F.... pulseaudio
 /dev/snd/controlC0:  carlosr    2267 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Thu May 10 10:15:29 2018
InstallationDate: Installed on 2018-04-27 (13 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/23/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3.11.2350
dmi.board.asset.tag: 0
dmi.board.name: Surface Pro 3
dmi.board.vendor: Microsoft Corporation
dmi.board.version: 1
dmi.chassis.asset.tag: 0
dmi.chassis.type: 9
dmi.chassis.vendor: Microsoft Corporation
dmi.chassis.version: 1
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr3.11.2350:bd01/23/2018:svnMicrosoftCorporation:pnSurfacePro3:pvr1:rvnMicrosoftCorporation:rnSurfacePro3:rvr1:cvnMicrosoftCorporation:ct9:cvr1:
dmi.product.family: Surface
dmi.product.name: Surface Pro 3
dmi.product.version: 1
dmi.sys.vendor: Microsoft Corporation
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2018-05-09T14:04:13.313882

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic wayland-session

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1770429

Title:
  Ubuntu 18.04 No audio from speakers. Headphones working. Surface Pro 3

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  I updated my Surface Pro 3 From Ubuntu 17.10 to Ubuntu 18.04 (did a clean 
install) and the only  audio working was from the headphone jack.
  I tried all these:
  [troubleshooting 
guide](https://help.ubuntu.com/community/SoundTroubleshootingProcedure)
  [this 
answer](https://askubuntu.com/questions/117842/no-sound-from-speakers-but-headphones-work)
  [another 
answer](https://askubuntu.com/questions/829520/ubuntu-16-04-no-sound-from-speakers-only-headphones-working)

  I went back and tested the live CD and even the live cd has no audio
  through the speakers. so this must be related to 18.04. I never had
  sound issues before and under windows audio still works correctly.

  here is my alsa iformation http://www.alsa-
  project.org/db/?f=8bf135db52610a603014779ef24041a491c8a32d

  and here is how I fixed it:

  renaming /etc/modprobe.d/alsa-base.conf to /etc/modprobe.d/alsa-
  base.bk , then rebooting the computer fixed the my speaker sound
  issue.

  I then restored line by line in to /etc/modprobe.d/alsa-base.conf, rebooting 
between restored lines, until all lines were back.... and ... it still worked!
  so I restored the original /etc/modprobe.d/alsa-base.conf and rebooted the 
computer and everything was still working....
  so I am not sure what the problem was but is now fixed.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  Uname: Linux 4.16.7-041607-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  carlosr    2267 F.... pulseaudio
   /dev/snd/controlC0:  carlosr    2267 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Thu May 10 10:15:29 2018
  InstallationDate: Installed on 2018-04-27 (13 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/23/2018
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3.11.2350
  dmi.board.asset.tag: 0
  dmi.board.name: Surface Pro 3
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: 1
  dmi.chassis.asset.tag: 0
  dmi.chassis.type: 9
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: 1
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr3.11.2350:bd01/23/2018:svnMicrosoftCorporation:pnSurfacePro3:pvr1:rvnMicrosoftCorporation:rnSurfacePro3:rvr1:cvnMicrosoftCorporation:ct9:cvr1:
  dmi.product.family: Surface
  dmi.product.name: Surface Pro 3
  dmi.product.version: 1
  dmi.sys.vendor: Microsoft Corporation
  mtime.conffile..etc.modprobe.d.alsa-base.conf: 2018-05-09T14:04:13.313882

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