Thanks David for the explanation, it seems that the issue is not really in the configuration dialog then...
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1014897 Title: [sound-nua] sound preference does not provide ac3 passthrough spdif in 5.1 speaker test Status in “gnome-control-center” package in Ubuntu: Confirmed Bug description: This sound card (Realtek ALC892) is 7.1 channel capable via the digital out (SPDIF). However, Ubuntu is not recognizing it as such and on the sound configuration we can only see the stereo parameters (right and left). As you can see in the attached picture, the rear and subwoofer parameters are grayed out, as if the card didn't support it. I have connected it to a 5.1 amplifier and played a DTS suround file. Unfortunately the sound coming out is simply stereo. No 5.1 surround. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18 Uname: Linux 3.2.0-25-generic x86_64 NonfreeKernelModules: fglrx AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: jabss 1592 F.... pulseaudio jabss 3738 F.... alsamixer /dev/snd/controlC0: jabss 1592 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Generic'/'HD-Audio Generic at 0xfef44000 irq 48' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100200' Controls : 6 Simple ctrls : 1 Card0.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Card1.Amixer.info: Card hw:1 'Generic_1'/'HD-Audio Generic at 0xfef40000 irq 16' Mixer name : 'Realtek ALC892' Components : 'HDA:10ec0892,18498892,00100302' Controls : 40 Simple ctrls : 19 Date: Tue Jun 19 00:29:21 2012 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) PackageArchitecture: all ProcEnviron: TERM=xterm LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic_1 failed Symptom_Card: Built-in Audio - HD-Audio Generic Symptom_Jack: Grey SPDIF Out, Rear Symptom_Type: Only some of outputs are working Title: [To Be Filled By O.E.M., Realtek ALC892, Grey SPDIF Out, Rear] Playback problem UpgradeStatus: Upgraded to precise on 2012-04-27 (52 days ago) dmi.bios.date: 02/09/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.50 dmi.board.name: A75M-ITX dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd02/09/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnA75M-ITX:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1014897/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp