Re: broken emu10k1 ADC

[James Courtier-Dutton <James@superbug.co.uk>]

James C. Georgas wrote:
> Can someone please verify that they can capture both channels of an
> analog source with a SBLive 5.1 EMU10k1/STAC9708-11 card?
> 
> Here's my setup:
> 	SBLive 5.1 Platinum, with a LiveDrive(00060?, manufactured 2000)
> 	kernel 2.6.14-gentoo-r4
> 	ALSA drivers 1.0.10_rc3 (also tried above kernel driver)
> 	enable_ir=1 extin=0x3fff extout=0x7fff
> 
> Mixer settings:
> 	capture CD selected
> 	capture gain = 0
> 	AC97 playback = 100
> 	headphone (LiveDrive) = 100
> 
> Source:
> 	Nine Inch Nails, Things Falling Apart, Track 4, first 10 seconds
> 	(has a noticeable stereo pan effect).
> 
> 1) I get the left channel, but not the right channel.
> 
> 2) Same result if I play back through the SBLive's main speakers, with
> the PCM and Master controls unmuted and set to 100. The remaining cases
> are played back through the LiveDrive headphone jack, to ensure that the
> stream heard is actually the digital capture, and not just the
> STAC9708-11's analog passthrough (which works fine for both channels).
> 
> 3) Same result if I set AC97 capture to 100, and capture using "arecord
> -d10 -fdat snd.out" and then play back through the (unmuted, volume=100)
> wave device, using "aplay snd.out".
> 
> 4) Same result for any of the other analog sources, including "mix".
> 
> 5) "Mix mono" mixes both channels properly, but I still only get the
> left stream for playback and capture.
> 
> 6 I get both channels when playing back or capturing a digital source.
> 
> I'm pretty sure that my STAC9708-11's right ADC is fried, but I wanted
> to get some second opinions before I went and blew thirty bucks on a
> replacement card.
> 
> I'm not on the list, so could you please CC to my personal email
> address?
> 
> Thanks.
> 

Hardly and alsa-devel topic...
Have you checked which socket the line in is connected to.
If it is the Line in, you will get stereo,
If it is the Mic in, you will get a single channel.
If you are recording from the CD/Aux input on the sound card, linked 
internally to the CD player, then you might have a valid problem.

As a general note, playback features on cards has been well tested, 
capture features have not be so well tested, so you might just have 
noticed a bug.

James




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