At Fri, 18 Jan 2008 17:10:06 +0100, Christophe Osuna wrote: > > 2008/1/16, Takashi Iwai <tiwai@xxxxxxx>: > > At Wed, 16 Jan 2008 18:20:20 +0100, > > Christophe Osuna wrote: > > > > > > I am having a bad time trying to get an ALC882 [1] to work. I hope > > > that you can help me. Currently I am using alsa-driver-1.0.14 but it > > > would probably be the same with 1.0.15 since there has been no change > > > in /pci/hda/. > > > > There have been tons of changes for HD-audio between these versions :) > > You should have looked at alsa-driver*/alsa-kernel/pci/hda. > > > > Anyway, now it's much better to try the latest ALSA HG version than > > 1.0.15. 1.0.15 is so old. If you are not familiar with HG, try the > > daily snapshot tarball below: > > > > ftp://ftp.suse.com/pub/projects/alsa/snapshot/ > > > > I have tried alsa-driver-hg20080117; it shows two additional mixer > options (Mic Boost and Front Mic Boost) but in the end it's the same: > I am unable to access the 3rd ADC. Looks like your board disables the third ADC. The driver probes it and the codec returns it's no audio-input widget. Check codec#* proc output. > The ALC882 datasheet states that "3 stereo ADCs support 16/20-bit PCM > format, two for microphone array, one for legacy mixer recording". > This is the only place that suggests there could be a difference, but > I do not understand this sentence as "only 2 ADC can be used at a > time" (English is not my native language). The block diagram in the > following page does not suggest such a limit either. The reality bites sometimes :) > Besides that I have read in the same datasheet that "rates in > sub-multiples (1/n) of 48kHz are interleaving n frames containing no > sample blocks" and so we can have 8 kHz by setting one sample block > every six frames. Still, I can't set the device to 8 kHz. How did you test it? The driver itself supports 8kHz, as long as the codec chip really returns the capability. Using two ALC882 codecs on the same HD-audio bus isn't supported right now. The second codec would conflict. Dual audio codecs are not impossible but it makes things complicated. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
