This is not a driver bug but a hardware bug. Nvidia ion1 (also with nvidia 9400), channel mapping is incorrect. You have to manually change the channel order using available methods: using alsa custom config, or pulse config etc..
There's no way around it -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/881490 Title: Switched channels on HDMI 5.1 setup (Nvidia ION) Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: I've choosen a Surround setup (HDMI 5.1) via sound preferences, and I got a problem. Some channels were inverted. I used the Hardware "Test speakers' to verify. The center sound was appearing on the rear-left, and so on... The only right channels were front-left and front-right. After search about this problem on the internet, I found this site: http://www.bunkerhollow.com/blogs/matt/archive/2011/06/18/zotac-nd22-xbmc-hdmi-audio-configuration-in-ubuntu-11-04.aspx The first weird thing is that the mentioned file, /usr/share/pulseaudio/alsa-mixer/profile-sets/nvidia.conf, doesn't exist on my machine, although I don't know if it were supposed to exist. After search for some similar file, I fixed the problem change the file /usr/share/pulseaudio/alsa-mixer/profile-sets/extra-hdmi.conf. I did what was suggested, commented the channel-map line and put a new one, as follows: ;channel-map = front-left,front-right,rear-left,rear-right,front-center,lfe channel-map = front-left,front-right,front-center,lfe,rear-left,rear-right I'm reporting this because I think there is a way to detected the sound board and do it automatically. My board is: 00:08.0 Audio device: nVidia Corporation MCP79 High Definition Audio (rev b1) Just let me know if you need more info! ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: pulseaudio 1:1.0-0ubuntu3 [modified: usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf usr/share/pulseaudio/alsa-mixer/profile-sets/extra-hdmi.conf] ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu3 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: ALC888 Analog [ALC888 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: htpc 1727 F.... pulseaudio Card0.Amixer.info: Card hw:0 'NVidia'/'HDA NVidia at 0xfae78000 irq 20' Mixer name : 'Nvidia MCP79/7A HDMI' Components : 'HDA:10ec0888,10eca113,00100001 HDA:10de0007,10de0101,00100100' Controls : 19 Simple ctrls : 9 Date: Tue Oct 25 13:34:42 2011 InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1) SourcePackage: pulseaudio UpgradeStatus: Upgraded to oneiric on 2011-10-14 (11 days ago) dmi.bios.date: 01/12/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080015 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: To be filled by O.E.M. dmi.board.vendor: To be filled by O.E.M. dmi.board.version: To be filled by O.E.M. 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.:bvr080015:bd01/12/2010:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.: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/pulseaudio/+bug/881490/+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
