The bug was not gone when using kernel 4.4 there was also an additional kernel between 4.4 and 4.15 that was available. I tried that as well. same result.no fix.
Since then I backed up my system and did a completely fresh install of 18.04LTS and the issue is still not fixed. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux 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/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
