Arch Linux

samuel

Member

Registered: 2013-10-16

Posts: 2

alsa,aplay:audio open error: Invalid argument

hi, all,I write an alsa driver,when test,but I met a error.
        root@rt# aplay 2k.mp3
         [  598.050000] pcm playback open     
         [  598.050000] pcm playback open close   (these two print is pcm_ops open func and close func's)
         aplay: main:722: audio open error: Invalid

the sound card info as below：
     root@rt:/proc/asound# ls
     ar9331   cards    hwdep    pcm      timers
     card0    devices  oss      seq      version
     root@rt:/proc/asound# cat cards
     0 [ar9331         ]: ar9331-alsa - AR9331/AR7221
                         AR9331/AR7221 at 0x222 irq 33
     root@rt:/proc/asound# ls /dev/snd/
     controlC0  pcmC0D0p   seq        timer

  aplay call snd_pcm_open and return error -22, it look like some alsa config invalid.

Can somebody help me.
   thank you.

samuel

Member

Registered: 2013-10-16

Posts: 2

Re: alsa,aplay:audio open error: Invalid argument

it also had an error,when I do as below.
# cat /tmp/2k.mp3  > /dev/audio
/bin/ash: can't create /dev/audio: Invalid argument