[MSI 785GM-E51 (MS-7596), ATI R6xx HDMI, Digital Out, HDMI] No sound at all

[dpcao]

 sudo lshw -class multimedia
  *-multimedia
       description: Audio device
       product: RV770 HDMI Audio [Radeon HD 4850/4870]
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 0.1
       bus info: pci@0000:01:00.1
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi bus_master cap_list
       configuration: driver=snd_hda_intel latency=0
       resources: irq:43 memory:feaec000-feaeffff
  *-multimedia
       description: Audio device
       product: SBx00 Azalia (Intel HDA)
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 14.2
       bus info: pci@0000:00:14.2
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: driver=snd_hda_intel latency=64
       resources: irq:16 memory:fe9f4000-fe9f7fff

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic i686
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0-0ubuntu2
Architecture: i386
Date: Sun Apr 1 20:41:30 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed
Symptom_Card: RV770 HDMI Audio [Radeon HD 4850/4870] - HDA ATI HDMI
Symptom_Jack: Digital Out, HDMI
Symptom_Type: No sound at all
Title: [MS-7596, ATI R6xx HDMI, Digital Out, HDMI] No sound at all
UpgradeStatus: Upgraded to precise on 2012-01-11 (80 days ago)
dmi.bios.date: 09/03/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V2.10
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 785GM-E51 (MS-7596)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.10:bd09/03/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7596:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rn785GM-E51(MS-7596):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7596
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mike L (mikerl)]

After selecting this sound card on Precise, I am unable to change back to my default sound card. I will attach a screenshot.

[David Henningsson (diwic)]

Hi dpcao,

When the monitor is successfully connected and you want to play back audio, what is the contents of the /proc/asound/card0/eld#0.0 file?

[dpcao (caodingpeng)]

abc@abc-MS-7596:~$ vim /proc/asound/card0/
codec#3 id pcm0c/ pcm0p/ pcm1p/ pcm2c/

there is no file named eld#0.0

Maybe the sound card is broken， because there is still no sound when I boot with ubuntu 11.10

[David Henningsson (diwic)]

Ok. I guess it's a problem with the video driver then, reassigning.

[madbiologist (me-again)]

On Ubuntu 12.10 "Quantal Quetzal" and later you will no longer be able to use the proprietary fglrx driver on your Radeon HD 4850/4870 as AMD have dropped support for this card in their drivers around the same time that they added support to their drivers for the newer kernel and xserver used in Quantal.

You will be able to use the open-source radeon driver, but note that 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

[madbiologist (me-again)]

The upstream 3.13 kernel is currently under development. The radeon.audio=1 kernel boot option will no longer be necessary with this kernel. Instead, HDMI audio on ATI/AMD Radeon cards can be enabled and disabled on the fly by typing the following in a terminal window:

xrandr --output HDMI-0 --set audio on

or

xrandr --output HDMI-0 --set audio off

If your HDMI port is numbered differently (type "xrandr" to check) - you might need to change HDMI-0 in the above command to HDMI-1 or HDMI-2.

The 3.13-rc2 kernel is currently available at http://kernel.ubuntu.com/~kernel-ppa/mainline/ and instructions on how to install and uninstall it are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds