I've done a fresh upgrade to 18.04 and had a "no sound" problem that I haven't found a solution to. I found this and have been using it to get the sound connected. Can't find the source again, unfortunately. Thought it might help to point to the problem. Reinstalling Alsa and Pulse; starting and stopping both; eliminating one or the other; did not work. The following identifies something and places "Built-in Audio Analog Stereo" into the sound output tab in Settings.
Open Terminal and type: pactl load-module module-detect -- 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: Confirmed 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1770429/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
