Re: [Alsa-user] aplay: pcm_write:1262: write error: Input/output error

[Bill U. <un...@ph...>]

On Wed, 20 Jul 2011, Nikhil Kamath wrote:

> Hi ,
> I have an iMX35PDK board with Linux2.6.35 running on it.  I am getting the following messages when I use aplay  -" aplay: pcm_write:1262: write error: Input/output error".
>
>
> Boot up log:
> usbhid: USB HID core driver
> sgtl5000-i2c 0-000a: SGTL5000 revision 17
> No device for DAI imx-ssi-1-0
> No device for DAI imx-ssi-1-1
> No device for DAI imx-ssi-2-0
> No device for DAI imx-ssi-2-1

No idea what these mean, but it would be a bit worrysome to me.

> DMA Sound Buffers Allocated:UseIram=0 buf->addr=87e20000 buf->area=fde08000 size
> =65536
> DMA Sound Buffers Allocated:UseIram=0 buf->addr=87e00000 buf->area=fde18000 size
> =65536
> asoc: SGTL5000 <-> imx-ssi-1-0 mapping ok
> ALSA device list:
>  #0: imx-3stack (SGTL5000)
>
>
> The below messages were logged when I executed aplay command:
>
> root@freescale /home$ aplay -c 1 -t wav -r 22050 -f mu_law testing.wav

And why do you have those options? a .wav file has its format defined in its
header file. And a .wav is never mu_law. It is rarely ( but could be) rate of
22050 or one channel. But try
aplay testing.wav
and see if that behaves better. (It probably will not, but it is worth a try).


> Warning: format is changed to S16_LE
> Playing WAVE 'testing.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

As  you see, it overrides your specification with the one from the header.


> imx_pcm_prepare
> ret = 0
> period pos  ALSA 4 DMA 0
> period size ALSA 1000 DMA 10000 Offset 0 dmasize 4000
> DMA addr 87e20000
> dma enable ret = 0
> period pos  ALSA 4 DMA 1
> period size ALSA 1000 DMA 10000 Offset 4000 dmasize 4000
> DMA addr 87e24000
> dma enable ret = 0
> pointer offset 0
> aplay: pcm_write:1262: write error: Input/output error
>
> Please help me resolve the issue.
>
> Thanks & regards,
> Nikhil
>
>
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>
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>
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William G. Unruh   |  Canadian Institute for|     Tel: +1(604)822-3273
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