Hi, looks like I finally found the root of my problem - the same. Got Ubuntu 16.04 and everything worked fine. Then after the updates HDMI disappears from the sound output, I checked with pavucontrol and it showed me that HDMI is unplugged. Then I had clean install of 18.04 and now I don't even see HDMI as "unplugged" in pavucontrol, just no such device at all.
Laptop ASUS with ATI Radeon 3650. Please fix this asap as looks like many people around the world use old laptops with Ubuntu as a video and audio source for TVs via HDMI. Thanks in advance. -- 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/1834771 Title: No HDMI-audio after kernel 4.15.-0.50 Status in linux package in Ubuntu: Confirmed Bug description: I've got no HDMI-audio. Latest kernel with working HDMI-audio is 4.15.-0.50. In pavucontrol HDMI-audio shows unplugged. And also internal audio shows unplugged, but it still works. I'm on linux mint 18.3. --- ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jouni 1859 F.... pulseaudio /dev/snd/controlC1: jouni 1859 F.... pulseaudio CurrentDesktop: X-Cinnamon DistroRelease: Linux 18.3 HibernationDevice: RESUME=UUID=9e8d7bf3-dc5f-4c72-b875-6dbe81a36c36 InstallationDate: Installed on 2017-01-28 (883 days ago) InstallationMedia: Linux Mint 18.1 "Serena" - Release amd64 20161213 IwConfig: lo no wireless extensions. enp3s0 no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. Package: linux (not installed) ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-54-generic root=UUID=f167a2b0-3b30-4a5a-907f-6b97c95b7a91 ro quiet iommu=soft splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.15.0-54.58~16.04.1-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-54-generic N/A linux-backports-modules-4.15.0-54-generic N/A linux-firmware 1.157.21 RfKill: Tags: sylvia Uname: Linux 4.15.0-54-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo video _MarkForUpload: True dmi.bios.date: 02/26/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: FC dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: 970A-UD3P dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFC:bd02/26/2016:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rn970A-UD3P:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.: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.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771/+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
