I have the same problem. I am using a Dell Optiplex 3070 mini PC attached to an 55 inch LG TV over HDMI. There wasn't a problem on 19.10, but I started not seeing my HDMI output on sound settings after the update.
-- 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/1845704 Title: HDMI monitor is not detected as sound output device starting from kernel 4.18.0-21 and above, Ubuntu 18.10 and 19.04 Status in linux package in Ubuntu: Confirmed Bug description: After upgrading Ubuntu 18.10 from kernel 4.18.0-20-generic to 4.18.0-21-generic, HDMI Audio stopped working, system does not detect it at all as a sound output device. Downgrading to 4.18.0-20 helped on Ubuntu 18.10, but currently I'm using Ubuntu 19.04 with kernel 5.0.0-29-generic, and HDMI sound still does not work and system cannot detect it. Adding the following parameters to GRUB didn't helped (): - amdgpu.dc=1 - radeon.audio=1 Video card: Radeon HD 4850 with 2 DVI ports with ability to output sound thru DVI (DVI-HDMI cable or DVI-HDMI adapter). ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-5.0.0-29-generic 5.0.0-29.31 ProcVersionSignature: Ubuntu 5.0.0-29.31-generic 5.0.21 Uname: Linux 5.0.0-29-generic x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: oshmyrko 2595 F.... pulseaudio /dev/snd/controlC2: oshmyrko 2595 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Fri Sep 27 22:14:27 2019 InstallationDate: Installed on 2019-04-13 (166 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) MachineType: To be filled by O.E.M. To be filled by O.E.M. ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=uk_UA.UTF-8 SHELL=/bin/bash ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-29-generic root=UUID=a88b1763-5d14-4204-ba95-d6718c22158d ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.0.0-29-generic N/A linux-backports-modules-5.0.0-29-generic N/A linux-firmware 1.178.3 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to disco on 2019-07-09 (80 days ago) dmi.bios.date: 02/12/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2603 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M5A97 EVO R2.0 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2603:bd02/12/2015:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97EVOR2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: To be filled by O.E.M. dmi.product.sku: SKU dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1845704/+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
