HDMI audio was 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 boot options as described at https://help.ubuntu.com/community/Grub2/Troubleshooting#Editing_the_GRUB_2_Menu_During_Boot If that still doesn't work, or the audio channels are incorrectly mapped, a patch titled "drm/edid: add a helper function to extract the speaker allocation data block" has been published which will hopefully be included in the upstream 3.12 kernel. The patch description reads: "This adds a helper function to extract the speaker allocation data block from the EDID. This data block describes what speakers are present on the display device." -- 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/1078451 Title: [GA-MA790GP-UD4H, ATI R6xx HDMI, Digital Out, HDMI] No sound at all Status in “alsa-driver” package in Ubuntu: New Bug description: there is no sound from my monitor speakers. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: alsa-base 1.0.25+dfsg-0ubuntu3 ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7 Uname: Linux 3.5.0-18-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: burlington 2115 F.... pulseaudio /dev/snd/controlC2: burlington 2115 F.... pulseaudio /dev/snd/controlC1: burlington 2115 F.... pulseaudio /dev/snd/controlC0: burlington 2115 F.... pulseaudio Date: Tue Nov 13 16:19:35 2012 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: Juniper HDMI Audio [Radeon HD 5700 Series] - HD-Audio Generic Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: burlington 2115 F.... pulseaudio /dev/snd/controlC2: burlington 2115 F.... pulseaudio /dev/snd/controlC1: burlington 2115 F.... pulseaudio /dev/snd/controlC0: burlington 2115 F.... pulseaudio Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [GA-MA790GP-UD4H, ATI R6xx HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/08/2010 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F7c dmi.board.name: GA-MA790GP-UD4H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF7c:bd07/08/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA790GP-UD4H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA790GP-UD4H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-MA790GP-UD4H dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1078451/+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
