Steps To Resolve Alsa Snd_pcm_open Error Failed, No Such Device Problem

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    Here are some simple ways that can help you resolve the alsa snd_pcm_open error related to the absence of such a device.

    I’m new to the Raspberry Pi, so sorry if this is unclear.I’m trying to get my Raspberry Pi 3 working by looking at the Pure Data patch, plugging two UNOs into the Arduino, and just plugging it in and running the patch accordingly, which will run automatically soon.There are so many things I usually ask about but I will be strict on this one as well as another one of my early concerns.I replaced the Patchbox OS because I need a minimal system to work with sound.Now I really feel like Pure Data is running through Jack (Pd->Media->Jack) because it’s not considered to work with ALSA, but it looks like running Jack is definitely not a handmaid. also displayed when the CPU counter is between 15% and 25%.IThus began the search for many solutions.I found one related question on this page with an answer that was well explained to me:Right here.The problem with this is only the first steps after SEO

     [email protected]:~ $ cat /proc/asound/cards nothing [ALSA]: bcm2835_alsa 3 ) bcm2835 ALSA                      bcm2835 ALSA 1 [USB]: USB audio - Scarlett 2i4 USB                      Focusrite Scarlett 2i4 USB found at usb-3f980000.usb-1.5, high speed
    mixer -c 1Simple Mixer keeps track of "insideprevious reliability”, 0  Features: pswitch  Playback channels: Mono  Mono: Playback [Enabled]

    So the system doesn’t recognize the Ins Real and Outs that affect my audio interface.There is also an issue with Pd: when I select ALSA as driver (Pd->media->ALSA), an identification problem is reported [ALSA input error (snd_pcm_open): No such file or directory]i hope i was clearThank you all

    I’m trying to implement sound capture on SoC using the ALSA library.I have libasound.so.2.0.0 and asoundlib.h precompiled with different headers.

    int returnCode;snd_pcm_t *pcm_handle;char *pcm_device_name matches "hw:0,0";returnCode Snd_pcm_open(&pcm_Handle, = pcm_device_name, SND_PCM_STREAM_CAPTURE, 0);

    Does this mean that the capture device is installed incorrectly (like tabs or something)?

    alsa error snd_pcm_open failed no such device

    Can I detect if ANY audio device available to alsa is installed?

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  • I figured out how to search for devices using: programmatic search for audio vCards available on Linux

    snd_card_next finds cardNum: 0 by itself, but I still fail with snd_ctl_open(&cardHandle, "hw:0", 0) in addition to snd_pcm_open(&pcm_Handle, "hw:0,0", SND_PCM_STREAM_CAPTURE, 0) with No such file or directory code>. Is this a sign that a quality device is installed incorrectly?

    “4.6 Preparing devices The driver directory is on the right side of the script They install ALSA audio devices in the trusted /dev directory. A type ./snddevices from the drivers directory. It should form /dev/snd Subdirectory (Check if it’s there these days. If you’re not familiar with indeed, the “ls” command, read the other HOWTOs first. You must have basic knowledge of Linux to install these drivers). Now that you are ready to insert the driver, be sure to contact the connector Paragraph.”

    I remember running the snddevices script which flagged the alsa version of the SoC, but unfortunately I wasn’t sure if that actually worked or if you were just supposed to show errors. But the link says I need to install the following? Unfortunately, I won’t be able to test the driver until tomorrow.

    From CL. and http://www.tldp.org/HOWTO/Alsa-sound-6.I html reviewed the following:dev/snd/ has when entries:

    crw-rw----1 main audio 116 Mar 06 '11 at 04:44crw-rw---- 1 audio root 116 Mar 24 20 04:44 pcmC0D0ccrw-rw---- 1 original reason audio clips 116, 07 Mar 11 04:44 pcmC0D0pcrw-rw---- 1 audio root 116 Mar 25, 2012 04:44 pcmC0D1ccrw-rw---- 1 semitone 116 Mar 27 11 04:44 pcmC0D2ccrw-rw---- 1 audio root 116 Mar 27 15 04:44 pcmC0D3ccrw-rw---- 1 Main Acoustics 116 Mar 29 11 04:44 pcmC0D4c

    alsa error snd_pcm_open failed no such device

    where cat controlC0 cat pcmC0D0c and cat pcmC0D1c king cat: read error: bad file descriptor others reimburse like cat: cannot open 'pcmC0D2c': no ​​such device

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