I also have this bug, Dell Latitude 7390, kernel upgraded to 4.15.0-99-generic about 2 days ago, couldn't get the sound (internal laptop speakers and audio jack) to work. However, HDMI sound through external monitors worked. I'd be happy to run some diagnosis with the old & new kernels if that'd be helpful.
-- 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/1875916 Title: upgrading to 4.15.0-99-generic breaks the sound and the trackpad Status in linux package in Ubuntu: Confirmed Bug description: I am using kubuntu LTS 18.04. This morning I was promped to update the kernel to the 4.15.0-99-generic. After the upgrade I did not manage to get any sound. I checked everything, pavucontrol, alsamix, everything was in order, the streams showed as if they were playing, however I couldn't get any sound from the speakers headphones and I could not get any sound recorded either. I then rebooted with the previous version of the Kernel, and have my sound back without doing anything at all. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.14 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: KDE DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=4a7a721a-7a2e-4644-a881-34adcb28e1ba InstallationDate: Installed on 2019-01-29 (455 days ago) InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) IwConfig: lo no wireless extensions. wlp108s0 no wireless extensions. MachineType: Dell Inc. Latitude 7390 2-in-1 Package: linux (not installed) ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-99-generic root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-99.100-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-99-generic N/A linux-backports-modules-4.15.0-99-generic N/A linux-firmware 1.173.17 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: bionic Uname: Linux 4.15.0-99-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/27/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.5.0 dmi.board.name: 0YNG30 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.5.0:bd08/27/2018:svnDellInc.:pnLatitude73902-in-1:pvr:rvnDellInc.:rn0YNG30:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Latitude dmi.product.name: Latitude 7390 2-in-1 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875916/+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
