Dominique Dumont <domi.dumont@xxxxxxx> writes: > What I see on my side: > - CPM 48Khz works flawlessly > - CPM 44KHz sounds horrible > - AC3 does not work (requires non-audio flag) > - DTS does not work (does not require non-audio flag tx to > compatibility with DTS CD) > - With DTS and AC3, my amp does not show the frame rate > > My best guess is that I've also some trouble with the frame rate also. > > At some point it did work, but I don't remember how. Probably when I > first loaded manually the driver. I'll try in this area. May be I'll > get a real lead... I have the exact same experiences as you, except that even 48kHz audio playback can get severely messed up... I have problems with the ALC882 not sending correct AC3/DTS all the time. I haven't found any reliable pattern to it, but try the following: 1. Turn off IEC958 (e.g. in alsamixer). 2. Start playing a 44.1kHz sound file with aplay (no sound is output, of course). 3. Interrupt aplay. 4. Turn on IEC958. 5. Play an AC3/DTS file from DVD (mplayer dvd:// -ao alsa -ac hwdts,hwac3,) If it still doesn't work, repeat all the steps again... When you finally do get it to work, you're good until you reboot. It's not really usable right now, unfortunately :-( > I've downloaded Realtek's version of alsa driver. I'll compare their > code to vanilla alsa. I came across this link while googling today: http://www.audioasylum.com/forums/pcaudio/messages/18753.html It seems it is not possible to get anything but 48kHz over S/PDIF in Windows either, except with an old driver (WDM_R131.exe). Do you have a Windows setup on your machine so that you can try this driver? You'll find it by googling for the file name. I would be extremely interested in knowing whether it is at all actually possible to get 44.1kHz over S/PDIF with these chips. If this driver does work, I suppose it should be possible to sniff out how the S/PDIF frame rate is actually controlled. I also sent an email to Realtek technical support today, in the hope that they can offer information that can help us. -- Best regards, Dag Lem _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
