At Thu, 30 Jan 2003 20:53:49 +0100,
Erik Welander wrote:
>
> By modifying snd_es18xx_playback_trigger function I tested both dma
> playback functions and here are my findings:
>
> *dma1, i.e.snd_es18xx_playback2 function writeout kern.log:
> (Produces no sound at all. When stopped playing an mp3 with mpg321 gives playback
>drain error)
> **************************************************************************
> Jan 30 19:30:34 cyberbob kernel: isapnp: Scanning for PnP cards...
> Jan 30 19:30:34 cyberbob kernel: isapnp: No Plug & Play device found
> Jan 30 19:30:35 cyberbob kernel: ALSA ../alsa-kernel/isa/es18xx.c:1569: [0x220]
>ESS1878 chip found
> Jan 30 19:38:40 cyberbob kernel: ALSA ../alsa-kernel/core/pcm_native.c:1137:
>playback drain error (DMA or IRQ trouble?)
> ***************************************************************************
please try to play with the pcm "hw:0,0,1", namely,
% aplay -Dhw:0,0,1 foo.wav
if it's ok, then the problem is that the second DAC is not
functional. you can disable the second DAC by specifying the same DMA
value for dma1 and dma2 options. (this will disable the full-duplex,
though.)
Takashi
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