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On Fri, Apr 11, 2008 at 7:33 AM, Raffaele BELARDI |
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<raffaele.belardi@××.com> wrote: |
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> On Fri, 2008-04-11 at 06:24 -0700, Mark Knecht wrote: |
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> > The controls shown in alsamixer are based on hardware features |
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> > revealed by the driver. My guess is that the nvidia 430 doesn't have |
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> > this feature, or it's driver hasn't turned it on by default. Possibly |
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> > there is a module parameter switch that shows up with modinfo that you |
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> > could play with? |
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> > |
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> > If you think the hardware supports this feature but the driver isn't |
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> > enabling it then your best bet would be to contact the alsa developers |
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> > to look for some support. (Or do it yourself if you have the skill |
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> > set!) |
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> > |
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> > cheers, |
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> > Mark |
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> |
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> Actually it's the ADC/DAC that performs the mixing (the AD1986A in this |
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> case). I checked the chip specs, it supports spreading 2ch over 6ch so |
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> probably the feature is not yet supported by ALSA. Also some search in |
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> the Gentoo forums confirm this |
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> (http://forums.gentoo.org/viewtopic-t-414308-postdays-0-postorder-asc-start-25.html) |
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> |
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> Thanks anyway, it cleared my ideas! |
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> |
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OK, sounds like you're on top of it. |
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As for spreading from 2 to 6 channels if the 6 channels are visible in |
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Jack then you could easily do this graphically with QJackCtl or even |
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do the Jack connections in a script if you were interested. The issue |
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would be whether your audio apps support Jack and how well they |
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support Jack. The downside would be that it would likely end up being |
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an app by app solution which wouldn't be fun. |
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Anyway, just an idea. |
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Cheers, |
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Mark |
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-- |
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