Public bug reported: This defect is not apparent on two other Ubuntu 16.04 machines. The upgrade to 16.10 did not change the symptoms.
lsb_release -rd Description: Ubuntu 16.10 Release: 16.10 ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0 Uname: Linux 4.8.0-26-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 CurrentDesktop: Unity Date: Fri Oct 21 11:53:54 2016 InstallationDate: Installed on 2016-09-22 (29 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed Symptom_Card: Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] - HDA ATI HDMI Symptom_Jack: Digital Out, HDMI Symptom_Type: Digital clip or distortion, or "overdriven" sound Title: [OptiPlex 7010, ATI R6xx HDMI, Digital Out, HDMI] Sound is distorted UpgradeStatus: Upgraded to yakkety on 2016-10-21 (0 days ago) dmi.bios.date: 09/19/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0773VG dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd09/19/2012:svnDellInc.:pnOptiPlex7010:pvr01:rvnDellInc.:rn0773VG:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.name: OptiPlex 7010 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug yakkety -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1635668 Title: [OptiPlex 7010, ATI R6xx HDMI, Digital Out, HDMI] Sound is distorted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1635668/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs