R.Wieser  wrote:
> Hello all,
>
> Problem: I cannot get sound outof of the audio-jack.  :-(
>
> Using "speaker-test" the HDMI output does give sound.  Currently I even have
> set "raspi-config" to force sound over the audio-jack, but it seems to gets
> ignored.

Make sure that the GPIO pin used for audio (sorry, can't remember
which one it is) isn't getting its mode changed by one of your
programs using the GPIO.

> Right-clicking the loudpeaker icon in the top-right of my display
> I can select "analogue" and "hdmi", but it goes over hdmi every time (also,
> the volume alwas drops to near-to-nothing when I select something, and the
> tickmark is gone whenever I reopen the box)

Seems like the driver is detecting a problem then. Check for any
errors in the output of dmesg.

> I've tried to google for solution, but didn't find anything (other than a
> "reinstall your OS" suggestion).

If you installed a new OS to another SD card and that played audio
over the analogue output, then that would at least confirm that it's
a software problem rather than a hardware one. As you've been playing
with the GPIO, it's more likely than usual that some damage might
have been done by accident.

> Board: 3B+
> OS:  NOOBS v3.2.0 (not sure which Linux version)

The file /proc/version should say the Linux version.

Some distros also add a file named something like /proc/distroversion
that says which distro you're using, and its version.

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