Hello list. I've got some trouble configuring the digital output of my builtin nforce3 audio card. More exactly, I cannot manage to use both my digital (HIFI speakers) and my analogic (PC speakers) at once, whereas it works OK under windows.
With snd_intel8x0 loaded, alsa see one card with thow distinct devices: [r...@netchaiev Desktop]# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: CK8S [NVidia CK8S], device 0: Intel ICH [NVidia CK8S] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: CK8S [NVidia CK8S], device 2: Intel ICH - IEC958 [NVidia CK8S - IEC958] Subdevices: 1/1 Subdevice #0: subdevice #0 >From http://alsa.opensrc.org/.asoundrc, I understood I had to set a virtual device that would combine both devices in one, and make it the default, as most applications (audacious, gstreamer) don't allow to select arbitrary alsa aliases. I tried this configuration without success: pcm.both { type route; slave.pcm { type multi; slaves.a.pcm { type hw card 0 device 0 } slaves.a.channels 2; slaves.b.pcm { type hw card 0 device 2 } slaves.b.channels 2; bindings.0.slave a; bindings.0.channel 0; bindings.1.slave a; bindings.1.channel 1; bindings.2.slave b; bindings.2.channel 0; bindings.3.slave b; bindings.3.channel 1; } ttable.0.0 1; ttable.1.1 1; ttable.2.2 1; ttable.3.3 1; } ctl.both { type hw; card 0; } pcm.!default plug:both >From http://alsa.opensrc.org/DigitalOut, I understand I also had to set IEC958 channel to PCM out, but I can't manage to do it. Alsamixer for my default card has three IEC958-related channels: - IEC958 (a simple switch) - IEC958 playback AC97-SPSA (a volume slide) - IEC958 playback source (a 3 position setting) I don't understand exactly the relationship between all the channels present for this device, and the fact than alsa seems to consider my card as two different devices. I also have an old sblive card, with an additional port replication card, including SPDIF in and out. I plugged in, in order to try if it would be simpler to configure, but despite loading snd_emu10k1, alsa don't even recognize it (/proc/asound/cards only display nforce3 and MPU-401 cards). I wonder if sound support for this older card is worth debugging the issue. I'm using Mandriva Linux, on i386, with kernel 2.6.27.5. Alsa version is 1.0.18. ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
