Thanks. If the sound worked fine in Ubuntu 16.04 then that's useful information. 16.04 used kernel 4.4 and you are presently using kernel 4.15
Next, please try installing an older kernel version and see if that fixes the problem. 1. Download these: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.146/linux-headers-4.4.146-0404146_4.4.146-0404146.201808061143_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.146/linux-headers-4.4.146-0404146-generic_4.4.146-0404146.201808061143_amd64.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.146/linux-image-4.4.146-0404146-generic_4.4.146-0404146.201808061143_amd64.deb 2. In a terminal run: cd ~/Downloads sudo dpkg -i linux*4.4.146*deb 3. Reboot and hold down Shift at start-up to choose the different kernel version. 4. Now check the new kernel is active by running: uname -a and send us the output. ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1786195 Title: broken audio/muffled, no system audio Status in linux package in Ubuntu: Incomplete Status in pulseaudio package in Ubuntu: Incomplete Bug description: Ubuntu 18.04.1 LTS pulseaudio: Installed: 1:11.1-1ubuntu7.1 Candidate: 1:11.1-1ubuntu7.1 Version table: *** 1:11.1-1ubuntu7.1 500 500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages 100 /var/lib/dpkg/status 1:11.1-1ubuntu7 500 500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages expected sound to return to normal/crisp throughout system and media applications. sound became muffled/distorted throughout all media applications, while other system sounds failed altogether. volume up/down failed. Chime on reboot also distorted. system and application sounds appear normal when used via bluetooth. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: pulseaudio 1:11.1-1ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-30.32-generic 4.15.18 Uname: Linux 4.15.0-30-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: novgorod 1787 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Aug 9 01:40:50 2018 InstallationDate: Installed on 2018-08-01 (7 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/02/18 dmi.bios.vendor: Apple Inc. dmi.bios.version: MB61.88Z.00CC.B00.1802021826 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-F22C8AC8 dmi.board.vendor: Apple Inc. dmi.chassis.asset.tag: Asset Tag# dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-F22C8AC8 dmi.modalias: dmi:bvnAppleInc.:bvrMB61.88Z.00CC.B00.1802021826:bd02/02/18:svnAppleInc.:pnMacBook6,1:pvr1.0:rvnAppleInc.:rnMac-F22C8AC8:rvr:cvnAppleInc.:ct10:cvrMac-F22C8AC8: dmi.product.family: MacBook dmi.product.name: MacBook6,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1786195/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
