https://www.kernel.org/doc/Documentation/Intel-IOMMU.txt
If you encounter issues with graphics devices, you can try adding option intel_iommu=igfx_off to turn off the integrated graphics engine. If this fixes anything, please ensure you file a bug reporting the problem. So the underlying issue is not fixed. On my system audio (and any video playing) stops when changing audio to integrated hdmi output, i7-4790s haswell cpu with ubuntu 22.04. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1970050 Title: [H97M-HD3, Intel Haswell HDMI, Digital Out, HDMI] No sound at all because of upgrade from 20.04 LTS to 22.04 Status in alsa-driver package in Ubuntu: Confirmed Bug description: After upgrading today from 20.04 LTS to 22.04 HDMI Audio does not work at all. Audio from speakers from a headphone jack works fine. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: alsa-base 1.0.25+dfsg-0ubuntu7 ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30 Uname: Linux 5.15.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Sat Apr 23 21:13:23 2022 InstallationDate: Installed on 2020-04-24 (729 days ago) InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed Symptom_Card: Built-in Audio - HDA Intel HDMI Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [H97M-HD3, Intel Haswell HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: Upgraded to jammy on 2022-04-23 (0 days ago) dmi.bios.date: 04/21/2015 dmi.bios.release: 4.6 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F7 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: H97M-HD3 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.:bvrF7:bd04/21/2015:br4.6:svnGigabyteTechnologyCo.,Ltd.:pnH97M-HD3:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH97M-HD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: H97M-HD3 dmi.product.sku: 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/alsa-driver/+bug/1970050/+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
