aplay: main:722: audio open error: No such file or directory

aplay: main:722: audio open error: No such file or directory

[Christopher Head]

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Hello!
Apologies if this is not the right place to report this. I tried to use
the bug tracker at <https://bugtrack.alsa-project.org/alsa-bug>, but
both times I went to it (a couple of weeks ago and again today) it was
offline. Also, I am not subscribed to the list, so please include me in
replies (or tell me if this is not acceptable and I will subscribe).

I can't play audio on non-default devices.

Running aplay with no options, or with -D default, works fine. Running
aplay with -D hdmi does not work, failing with this message:

aplay: main:722: audio open error: No such file or directory

Running it in strace, I see that the last interesting thing it does
before printing that message is it tries to open /dev/snd/pcmC0D3p,
which does not exist; it should probably be addressing pcmC1D3p instead.

I have no ALSA configuration files anywhere.

kruskal asound # aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=MID
    HDA Intel MID, ALC663 Analog
    Default Audio Device
sysdefault:CARD=MID
    HDA Intel MID, ALC663 Analog
    Default Audio Device
front:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Analog
    Front speakers
surround40:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=MID,DEV=0
    HDA Intel MID, ALC663 Digital
    IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=NVidia,DEV=0
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    HDMI Audio Output

kruskal asound # ls -1 /dev/snd
by-path
controlC0
controlC1
hwC0D0
hwC1D0
hwC1D1
hwC1D2
hwC1D3
pcmC0D0c
pcmC0D0p
pcmC0D1p
pcmC0D2c
pcmC1D3p
pcmC1D7p
pcmC1D8p
pcmC1D9p
seq
timer

kruskal asound # cat cards
 0 [MID            ]: HDA-Intel - HDA Intel MID
                      HDA Intel MID at 0xf4900000 irq 53
 1 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xf3080000 irq 17

kruskal asound # cat devices 
  1:        : sequencer
  2: [ 0- 2]: digital audio capture
  3: [ 0- 1]: digital audio playback
  4: [ 0- 0]: digital audio playback
  5: [ 0- 0]: digital audio capture
  6: [ 0- 0]: hardware dependent
  7: [ 0]   : control
  8: [ 1- 9]: digital audio playback
  9: [ 1- 8]: digital audio playback
 10: [ 1- 7]: digital audio playback
 11: [ 1- 3]: digital audio playback
 12: [ 1- 3]: hardware dependent
 13: [ 1- 2]: hardware dependent
 14: [ 1- 1]: hardware dependent
 15: [ 1- 0]: hardware dependent
 16: [ 1]   : control
 33:        : timer

kruskal asound # cat pcm
00-00: ALC663 Analog : ALC663 Analog : playback 1 : capture 1
00-01: ALC663 Digital : ALC663 Digital : playback 1
00-02: ALC663 Alt Analog : ALC663 Alt Analog : capture 1
01-03: HDMI 0 : HDMI 0 : playback 1
01-07: HDMI 0 : HDMI 0 : playback 1
01-08: HDMI 0 : HDMI 0 : playback 1
01-09: HDMI 0 : HDMI 0 : playback 1
-- 
Christopher Head

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Re: aplay: main:722: audio open error: No such file or directory

[Clemens Ladisch]

Christopher Head wrote:
> asound # cat cards
>  0 [MID            ]: HDA-Intel - HDA Intel MID
>                       HDA Intel MID at 0xf4900000 irq 53
>  1 [NVidia         ]: HDA-Intel - HDA NVidia
>                       HDA NVidia at 0xf3080000 irq 17
>
> I can't play audio on non-default devices.
>
> Running aplay with -D hdmi does not work, failing with this message:
> aplay: main:722: audio open error: No such file or directory

The default card has no "hdmi" device.

Try -D hdmi:CARD=NVidia (or better plug:hdmi:CARD=NVidia to get
automatic sample format conversions).


Regards,
Clemens

Re: aplay: main:722: audio open error: No such file or directory

[Christopher Head]

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On Mon, 26 May 2014 10:30:33 +0200
Clemens Ladisch <clemens@ladisch.de> wrote:

> Christopher Head wrote:
> > asound # cat cards
> >  0 [MID            ]: HDA-Intel - HDA Intel MID
> >                       HDA Intel MID at 0xf4900000 irq 53
> >  1 [NVidia         ]: HDA-Intel - HDA NVidia
> >                       HDA NVidia at 0xf3080000 irq 17
> >
> > I can't play audio on non-default devices.
> >
> > Running aplay with -D hdmi does not work, failing with this message:
> > aplay: main:722: audio open error: No such file or directory
> 
> The default card has no "hdmi" device.
> 
> Try -D hdmi:CARD=NVidia (or better plug:hdmi:CARD=NVidia to get
> automatic sample format conversions).
> 
> 
> Regards,
> Clemens

Well, here’s what happens when I try either of those:

$ aplay -D hdmi:CARD=NVidia phone.wav
Playing WAVE 'phone.wav' : Unsigned 8 bit, Rate 11025 Hz, Mono
aplay: set_params:1233: Sample format non available
Available formats:
- S16_LE
- S32_LE

(so, looks like it worked fine)

$ aplay -D plug:hdmi:CARD=NVidia phone.wav
ALSA
lib /tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/conf.c:4578:(parse_args)
Unknown parameter hdmi:CARD ALSA
lib /tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/conf.c:4711:(snd_config_expand)
Parse arguments error: No such file or directory ALSA
lib /tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:2239:(snd_pcm_open_noupdate)
Unknown PCM plug:hdmi:CARD=NVidia
aplay: main:722: audio open error: No such file or directory

(no idea what happened here)

Actually, I was led to this problem initially due to trying to get
Linphone to use my HDMI output for ringing but my normal audio output
to headphones for talking. I discovered Linphone was using the wrong
device node name, so I tried to narrow down the problem by getting
Linphone out of the picture and just playing to different destinations
with aplay.

What strikes me as weird is that sure, my default card doesn’t have an
hdmi device—so why then is it trying to open a /dev/snd/pcm node whose
name is a mixture of card and device that doesn’t exist? If it’s only
willing to consider card 0 in this case, why is it looking up the name
“hdmi” under card 1 and finding device number 3 at all, only to
concatenate it with card number 0?

If this is considered not a bug, then I’ll be happy to leave you alone
and poke the Linphone/Mediastreamer folks more instead.
-- 
Christopher Head

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