Greetings all - I'm new to the list. I have two machines on which I'm having similar issues. Both run mythtv (among other audio apps (Amarok, mplayer, Xine, etc)); both are configured as general-use Linux desktops, but the BE/FE's main task is being a Myth server, obviously. Both are linked to 5.1 receivers via the S/PDIF interface. My combined BE/FE machine uses an Asus P5K-Deluxe/Wifi motherboard (running Mandriva 2008.0 x86_64 (alsa 1.0.14; alsa-utils is 1.0.15rc1) and my upstairs frontend (ABit AN8-32X) runs Ubuntu Hardy (1.0.15). Both machines appear (per lsmod | grep snd) to be using the snd-intel8x0 driver. I have had issues with getting stereo streams to play (using myth's internal player for recordings, or mythmusic) if a file with Dolby Digital 5.1 sound is played first. If I play the stereo recording before a DD 5.1 one, it plays OK. I can play any videos, no matter what the sound codec is, correctly within or outside of Myth with this: "mplayer -fs -zoom -quiet -vo xv -ao alsa:device=spdif -afm hwac3 %s"). However, trying to use ALSA:spdif or ALSA:surround51 in Myth's general setup for default audio device doesn't give me any sound. The only settings that do are "/dev/adsp" on the BE/FE box and "ALSA:default" on the upstairs machine. On both, the only setting for "Default passthrough device" which works is "default". Right now, I still have to exit mythfrontend and run "iecset audio 0", then restart the frontend to play a stereo recording if I have watched a 5.1 show before it. I do not have to do this if I play only recordings with DD 5.1 audio. I have posted this on th Mythtv-users mailing list, and have been told that it's a sound-system configuration issue, not a Myth problem. I'm tending towards believing this because I have noted, on the upstairs machine, that I sometimes have to issue "iecset audio 1" to play videos with stereo or faux-surround (Pro-Logic) even outside of Myth. I have tried all sorts of different .asound.rc and /etc/asound.conf files without any changes, and I'm beginning to think that I don't actually need these (I've seen somewhere that this had actually been deprecated somewhere around 1.0.12 (?)). Has anyone yet found a fix for this? It appears that playing a DD 5.1 recording flips a bit somewhere and that it needs to be reset before playing a non-Dolby Digital recording. I shouldn't have to do this. I simply want all audio to go out the S/DIF interface. Thanks in advance -- Bob -- ________________________________________ Bob Sully - Simi Valley, California, USA http://www.malibyte.net http://www.malibyte.com ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
