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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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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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raf |
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-- |
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