Re: aplay: pcm_write:1025: write error & SNDRV_PCM_IOCTL_PREPAREfailed:device or resource busy

[Mark Knecht <markknecht@attbi.com>]

On Mon, 2003-06-02 at 07:25, Takashi Iwai wrote:

> just add the following line to the end of /etc/modules.conf:
> 
> 	options snd-via82xx dxs_support=2
> 
> (or dxs_support=3)
> 
> and run "/etc/init.d/alsasound restart".
> 
> note that the option above is available only on the very recent ALSA 
> version.

A solution is found! But I'd like to understand why the other failed:

Wizard root # aplay -D hw:0,1 /home/mark/data/wave/seque~10.wav 
Playing WAVE '/home/mark/data/wave/seque~10.wav' : Signed 16 bit Little
Endian, Rate 44100 Hz, Mono

And I get sound just fine...

Why is specifying the device required? As root I have no .asoundrc file,
but as a user I do:


pcm.via82xx {
    type hw
    card 0
}

ctl.via82xx {
    type hw
    card 0
}



Apparently my version is not new enough for your new option:

Wizard modules.d # /etc/init.d/alsasound restart
 * Shutting down ALSA
modules....                                         [ ok ]
 * Initialising ALSA....
 * Starting sound driver: snd-via82xx Warning: ignoring dxs_support=2,
no such parameter in this module
Module snd-via82xx loaded, with
warnings                                  [ ok ]
 
Wizard modules.d # 

And pcm2p did not exist...

Wizard root # ls /proc/asound/card0/
ac97#0  ac97#0regs  id  pcm0c  pcm0p  pcm1c  pcm1p
Wizard root # 


Wizard root # aplay -v /home/mark/data/wave/seque~10.wav 
Playing WAVE '/home/mark/data/wave/seque~10.wav' : Signed 16 bit Little
Endian, Rate 44100 Hz, Mono
Plug PCM: Hardware PCM card 0 'VIA 8235' device 0 subdevice 0

Its setup is:
stream       : PLAYBACK
access       : RW_INTERLEAVED
format       : S16_LE
subformat    : STD
channels     : 1
rate         : 44100
exact rate   : 44100 (44100/1)
msbits       : 16
buffer_size  : 22050
period_size  : 4410
period_time  : 100000
tick_time    : 10000
tstamp_mode  : NONE
period_step  : 1
sleep_min    : 0
avail_min    : 4410
xfer_align   : 4410
start_threshold  : 22050
stop_threshold   : 22050
silence_threshold: 0
silence_size : 0
boundary     : 1445068800
aplay: pcm_write:1025: write error: Input/output error
Wizard root # 






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