>> I'm trying to get multichannel sound working on my nvidia nforce 590 >> based mobo that uses the intel hd audio (nvidia mcp55) chipset. It >> plays fine in two channels but any attempts to use -Dsurround51 or >> -Dsurround40 fail. Ie: >> >> Playing WAVE 'space_battle.wav' : Signed 16 bit Little Endian, Rate >> 44100 Hz, Channels 6 >> aplay: set_params:906: Channels count non available > > That's correct. Use -Dplug:surround40, because the count of channels from > the .wav file has to be converted to four. I just upgraded to 1.0.12_rc2, and I've got a lot more mixer controls in alsamixer now. I can see front, rear, surround, etc. And now I can finally specify -Dplug:surround71 to get 8 channel audio! However, there is one problem. On my card the channels are not exactly correct when running speaker-test. The side and rear speakers are reversed. I double checked this with my card's manual, and in Windows. In dmesg I see the following: hda_codec: Unknown model for ALC883, trying auto-probe from BIOS... pdplus: version 0.0.5 hda-intel: Invalid position buffer, using LPIB read method instead. Also, curiously, using the same settings as speaker-test (which works fine), aplay hangs when trying to play multichannel audio files. Same for mplayer (with or without -channels settings). Thanks, Tim. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
