HDMI audio on AMD/ATI GPUs has been disabled by the upstream kernel developers as it causes blank screens on a lot of systems.
You can re-enable HDMI audio by adding radeon.audio=1 to your GRUB kernel boot options as described at https://help.ubuntu.com/community/Grub2/Troubleshooting#Editing_the_GRUB_2_Menu_During_Boot -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1182760 Title: [IBM System x iDataPlex dx340 Server -[7832AC1]-, ATI R6xx HDMI, Digital Out, HDMI] No sound at all Status in “alsa-driver” package in Ubuntu: New Bug description: I did receive 3 small blurbs of sound which gave me the impression it might actually work then it just gave out altogether. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8 Uname: Linux 3.8.0-21-generic x86_64 ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dfaber 2068 F.... pulseaudio /dev/snd/pcmC0D3p: dfaber 2068 F...m pulseaudio Date: Tue May 21 23:06:51 2013 InstallationDate: Installed on 2013-05-22 (0 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MarkForUpload: True PackageArchitecture: all ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed Symptom_Card: Redwood HDMI Audio [Radeon HD 5000 Series] - HD-Audio Generic Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dfaber 2068 F.... pulseaudio /dev/snd/pcmC0D3p: dfaber 2068 F...m pulseaudio Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [IBM System x iDataPlex dx340 Server -[7832AC1]-, ATI R6xx HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/17/2008 dmi.bios.vendor: IBM dmi.bios.version: I1E128A dmi.board.name: iDataPlex dx340 dmi.board.vendor: IBM dmi.board.version: REV : 1.xxG dmi.chassis.type: 1 dmi.chassis.vendor: IBM dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnIBM:bvrI1E128A:bd09/17/2008:svnIBM:pnIBMSystemxiDataPlexdx340Server-[7832AC1]-:pvrSystemVersion:rvnIBM:rniDataPlexdx340:rvrREV1.xxG:cvnIBM:ct1:cvrChassisVersion: dmi.product.name: IBM System x iDataPlex dx340 Server -[7832AC1]- dmi.product.version: System Version dmi.sys.vendor: IBM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1182760/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
