[alsa-devel] Underrun on Jade controller...

Daniel Mack zonque at gmail.com
Fri Nov 23 11:09:02 CET 2012


On 23.11.2012 11:05, Sandulescu Bogdan wrote:
> I'm an User-Space application developer, using the ALSA library to
> play mixed sounds. My application (and for that matter also aplay)
> are having one underrun problem, and I need help on how to interpret
> the following debug information and receive some possible
> workarounds/solutions.
> 
> The underrun occurs only: once after writei() was performed with
> get_buffer_size bytes  written, and try to do another writei().
> 
> Target: Fujitsu Jade microcontroller
> 
> ALSA: 1.0.25
> 
> ALSA PCM interface for Jade-xxsvideo:
> /kernel/linux-2.6.31.4/sound/soc/xxsvideo/jade-pcm.c
> 
> DMA driver: /kernel/linux-2.6.31.4/arch/arm/mach-xxsvideo/dma.c

Neither the ARM platform code nor the ASoC parts are present in mainline.

> Here are the traces I managed to do, if there is any other
> information needed, please ask me for it.

Without providing any code, I guess nobody on this list will be able to
help you.


Daniel


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