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I lost the audio for some reason on Raspbian GNU/Linux 9 (stretch).

If I do this: sudo modprobe snd-bcm2835

.... I get this:

modprobe: ERROR: could not insert 'snd_bcm2835': Unknown symbol in module, or unknown parameter (see dmesg)

If I do this.....

lsusb

....I see no sound card listed.

.... But if I boot using another memory card and Ubuntu, my sound works just fine. I think I messed up something when I uninstalled all the bluetooth and wifi stuff because I cannot have that running.

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  • so, did you see dmesg? do you have dtparam=audio=on in your config.txt (not sure if that was present/necessary in such an old version of Raspbian) ... also, the onboard sound device will not show up in lsusb
    – Jaromanda X
    Commented Feb 28, 2023 at 23:28
  • Hi. dtparam=audio=on is set, yes.
    – user2860427
    Commented Mar 1, 2023 at 0:01
  • On dmesg.... I get this now " snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. " ....... because I tried to reinstall the driver. Not sure what it said before. Can't I just download and reinstall a driver somehow?
    – user2860427
    Commented Mar 1, 2023 at 0:02
  • snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned is exactly what is output on all my pi's (from 1 thru to 4) - so, that suggests the module is actually loaded, yet you say it isn't?
    – Jaromanda X
    Commented Mar 1, 2023 at 0:04
  • I have only started getting that message in the past hour since I installed the driver from some staging directory. mp123 errors, raspi-config advanced section regarding audio errors, and I don't see the card anywhere.
    – user2860427
    Commented Mar 1, 2023 at 0:06

1 Answer 1

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This did it! Fixed I think.

Opinion of what I did that worked: I think I downgraded the firmware which replaced the driver.

Use this command: sudo rpi-update e1050e94821a70b2e4c72b318d6c6c968552e9a2

...from here: https://forums.raspberrypi.com/viewtopic.php?p=1729542#p1729542

NOTE: I then ran rpi-update but it broke again.

So I ran this to get the latest supported kernel (I think)...

sudo apt-get update; sudo apt-get install --reinstall raspberrypi-bootloader raspberrypi-kernel

From here: https://raspberrypi.stackexchange.com/questions/101790/how-to-revert-from-rpi-update-to-stable-build

Summary: I did two steps. Would just the second step have worked? I don't know. Did I run rpi-update a few days ago that broke this all in the first place? Possibly.

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