Hello, I am not sure whether the following problem is related to PulseAudio or bare ALSA. ;-) On my snd_hda_intel card with a Realtek chipset mentioned in the subject, I have the following issues: 1) The channels/connectors mapping seems to be wrong. With the model=auto mode, the configuration is as follows: Channel Connector ------------------------- Front Front (green) and Rear (black) Rear Middle (orange) <- stereo output, surprisingly; doesn't sound like center/subwoofer OFF Side/Line in (blue) Microphone Microphone (pink) I tried model=6stack-dig, but the configuration did not change much: Channel Connector ------------------------- Front Front (green) Rear Middle (orange) <- stereo output, surprisingly; doesn't sound like center/subwoofer OFF Side/Line in (blue), Rear (black) Microphone Microphone (pink) There are incredibly many model options... http://git.alsa-project.org/?p=alsa-kmirror.git;a=blob;f=Documentation/HD-Audio-Models.txt;h=bda546928a427c4046cec48eb2859a7a8cff24c8;hb=HEAD None of them seems to match my hardware exactly. With 6stack-dig, one can swithch to 8-channel mode in alsamixer, which is impossible in the automatic mode. However, this does not explain why PulseAudio switches to 8-channel mode for some users and keeps the 6-channel mode for others. All users have the same 4.0 surround setup configured. What could be causing PulseAudio to decide about 6/8 channel mode? According to the motherboard's manual http://downloads.zotac.com/mediadrivers/mb/man/pa146.pdf, the 8-channel mode should yield a standard configuration using all the five conectors: front (green), side (blue), rear (black), center/subwoofer (orange). This is obviously not the case (as noted above). (There are two more connectors somewhere on the mainboard, but I don't have a front pannel installed, so the cannot be accessed. Perhaps the side speakers could be mapped to one of them...?) 2) Consequently, I can neither play 7.1 audio, nor use my soundcard as 3 separate stereo cards. As for the latter case, I tried this: load-module module-remap-sink sink_name=Monitor remix=no master=alsa_output.pci-0000_00_1b.0.analog-surround-71 channels=2 master_channel_map=front-left,front-right channel_map=front-left,front-right load-module module-remap-sink sink_name=Headphones remix=no master=alsa_output.pci-0000_00_1b.0.analog-surround-71 channels=2 master_channel_map=rear-left,rear-right channel_map=front-left,front-right load-module module-remap-sink sink_name=HiFi remix=no master=alsa_output.pci-0000_00_1b.0.analog-surround-71 channels=2 master_channel_map=side-left,side-right channel_map=front-left,front-right Well, presumably, this is how it worked: Monitor played through the front (green) jack with model=6stack-dig and through both front (green) and rear (black) jacks with model=auto. Headphones played through the center/subwoofer (orange) jack in both modes. HiFi did not play anywhere. Is it possible to configure this card for 7.1 audio or as three separate stereo cards? A line from lspci: 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) My audio configuration in modprobe.conf: options snd_hda_intel index=0 options snd_usb_audio index=2 options snd slots=snd_hda_intel,snd_hda_intel,snd_usb_audio options snd_hda_intel model=6stack-dig Just about any hint would be very helpful. :-) Andrej -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 6725 bytes Desc: Elektronick?? podpis S/MIME URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20111230/e0f15131/attachment.bin>