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Raspberry Pi Forum ras pi 4b no ALSA sound cards
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Related

ras pi 4b no ALSA sound cards

rbdavis808
rbdavis808 over 3 years ago

Hi all,

I just installed the latest Void Linux release tarball (2021-09-30) onto my CanaKit Raspberry Pi 4 Model B w/4GB. Audio appears completely broken and I was not able to get it working by removing pulseaudio packages as recommended by another post in this forum. (I was unable to remove the libpulseaudio package due to excessive dependencies, but did remove pulseaudio, pulseaudio-utils and pavucontrol.) No sound is generated on either my HDMI monitor or the Pi's audio jack. I have traced this problem down to the fact that ALSA seems to think there are no sound cards in the system:

# aplay mysoundfile

ALSA lib confmisc.c:855:(parse_card) cannot find card '0' ...

(The alsamixer app generates the same error message.) Can anyone explain to me why ALSA can see no sound hardware on this system and how I can make it do so?

Thanks!

PS: There are no cards listed in /proc/asound and the /usr/bin/alsa-info.sh diagnostic generates the following relevant info:

Kernel release: 5.10.52_1

!!ALSA Version
!!------------

Driver version: k5.10.52_1
Library version:
Utilities version: 1.2.6

!!Loaded ALSA modules
!!-------------------

!!Sound Servers on this system
!!----------------------------

No sound servers found.


!!Soundcards recognised by ALSA
!!-----------------------------

--- no soundcards ---


!!PCI Soundcards installed in the system
!!--------------------------------------

!!Modprobe options (Sound related)
!!--------------------------------

snd_bcm2835: enable_compat_alsa=0
snd_bcm2835: enable_hdmi=1

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  • colporteur
    0 colporteur over 3 years ago

    I haven't worked with a Pi4 but a few of us were throwing stuff into this post concerning audio. 

    /products/raspberry-pi/b/blog/posts/alsa-no-audio-glitch-issue-pi-4-fix

    It was centered around Raspberry Pi OS, not sure if it helps.

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  • rbdavis808
    0 rbdavis808 over 3 years ago in reply to colporteur

    Thanks, colporteur. I read that post pretty carefully, I think, but did not notice any clear suggestions other than the removal of pulseaudio, which did not do the trick for me. If I missed something else that's worth trying please advise and I will definitely do it. There were unfortunately no reports there that mentioned VoidLinux and that may have some bearing on my problem, but it does seem hard to imagine that ALSA and/or other kernel drivers should have any VoidLinux-specific issues.

    Thanks again!

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  • colporteur
    0 colporteur over 3 years ago in reply to rbdavis808

    Sorry if I provided false hope. My experience is limited to Raspberry Pi OS and a few Linux distros. I look at the posting link I sent you, like a collection of threads I pull on when I have audio issues. I have gotten some success in the past but maybe that is long past.

    I have never managed to get my head around the ASLA and Pulse audio framework. Throw Jack into the mix and yeah it is a mixer.

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  • colporteur
    0 colporteur over 3 years ago in reply to rbdavis808

    Sorry if I provided false hope. My experience is limited to Raspberry Pi OS and a few Linux distros. I look at the posting link I sent you, like a collection of threads I pull on when I have audio issues. I have gotten some success in the past but maybe that is long past.

    I have never managed to get my head around the ASLA and Pulse audio framework. Throw Jack into the mix and yeah it is a mixer.

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  • rbdavis808
    0 rbdavis808 over 3 years ago in reply to colporteur

    No worries, I greatly appreciate your effort to help me and many other folks solve this problem!

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