[kwlug-disc] Audio device not detected?

[CrankyOldBugger]

I have two Raspis hooked up to the TV via HDMI cables; they both deliver
sound with no issues.  To be honest, it was simple plug and play.  (one of
those Raspis is running LibreElec/Kodi, the other is running RetroPie, so
_maybe_ the audio configs were preconfigured?)

But in doing a quick search for your issue, I did come across:
https://forums.raspberrypi.com/viewtopic.php?t=263942

The one line on that page that caught my eye was: "Select the appropriate
output from the volume control on the Raspbian desktop, or use "amixer -q
cset numid=3 1" (1=analog, 2=HDMI0, 3=HDMI1)"

Hopefully that helps.


On Mon, 2 Jun 2025 at 21:31, Doug Moen <doug at moens.org> wrote:

> I just read a series of three blog posts detailing about how useless and
> broken sound is in Linux.
> This resonated with me.
> On my Linux Mint system, the sound device periodically disappears, but it
> comes back when I reboot.
> I am not well versed in Linux sound, however. I just know it doesn't work,
> at least in Mint.
>
> On my T14, aplay is working, but aplay -i just hangs without producing
> output.
>
> On my desktop, Firefox can play audio just fine, in youtube videos, but
> aplay doesn't work:
> ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect:
> Connection terminated
> and the Sound control panel also claims that I have no sound devices.
> (Rebooting my desktop should fix this, but I won't do that right now.)
>
> At some point I plan to install Fedora on a sacrificial machine and see if
> audio works reliably there.
>
> Doug.
>
> On Mon, Jun 2, 2025, at 5:07 PM, Khalid Baheyeldin wrote:
>
> I know this group has some audiophiles who are well versed in Linux's
> sound components.
>
> I bought one of the new N100 mini PCs to run various stuff on, and the
> plan
> is to replace the Raspberry Pi4 with something more powerful, yet close in
> power consumption to the Pi.
>
> The N100 PC runs Xubuntu 24.04.2 LTS, and will be a headless system.
> It has a 3.5mm, and I connected speakers to it.
>
> When I do:
>
> $ aplay foo.wav
> Playing WAVE 'foo.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
>
> It pretends to play the wave file, but no sound comes out from the
> speakers.
>
> But aplay says there are no soundcards ...
>
> $ aplay -l
> aplay: device_list:277: no soundcards found...
>
> According to alsa-info, the machine is:
>
> Manufacturer:      Firebat_Computer
> Product Name:      T8_Plus
> Firmware Version:  5.26
> System SKU:        T8P-F
>
> And
>
> !!Soundcards recognised by ALSA
> !!-----------------------------
>
>  0 [PCH]: HDA-Intel - HDA Intel PCH
>                HDA Intel PCH at 0x6001110000 irq 136
>  1 [HID]: USB-Audio - USB Audio and HID
>                CSCTEK USB Audio and HID at usb-0000:00:14.0-6, full speed
>
>
> !!PCI Soundcards installed in the system
> !!--------------------------------------
>
> 00:1f.3 Audio device [0403]: Intel Corporation Alder Lake-N PCH High
> Definition Audio Controller [8086:54c8]
>         DeviceName: Onboard - Sound
> So there is a sound card.
>
> But why is aplay not seeing it?
>
> Any help with this is really appreciated ...
>
> --
> Khalid M. Baheyeldin
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