Argon BLSTR DAC not working

Following up on my previous comment, I have tried various option as listed by Harry above in Libre ELEC on an SD card with no SSD installed and the DAC is not showing up. My final config.txt is below but I had also tried with
detoverlay=
dtoverlay=hifiberry-dacplus-std
at the start of the file

LibreELEC:~ # cat /flash/config.txt
dtoverlay=
dtoverlay=hifiberry-dacplus,slave
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
################################################################################
# Bootloader configuration
# config.txt version v1 (do not remove or change this line!)
################################################################################
# For more options and information see
# http://rpf.io/configtxt
################################################################################

# Don't send initial active source message.
# Avoids bringing CEC (enabled TV) out of standby and channel switch when
# rebooting.
hdmi_ignore_cec_init=1
dtoverlay=vc4-kms-v3d,noaudio
usb_max_current_enable=1

[all]
################################################################################
# Use distroconfig-composite.txt instead of distroconfig.txt to enable
# composite video output.
# The composite video mode needs to be configured in cmdline.txt:
# For PAL add: video=Composite-1:720x576@50ie
# For NTSC add: video=Composite-1:720x480@60ie
################################################################################
include distroconfig.txt
#include distroconfig-composite.txt

# uncomment to enable infrared remote receiver connected to GPIO 18
#dtoverlay=gpio-ir,gpio_pin=18
#dtoverlay=hifiberry-dacplus,slave
LibreELEC:~ #

aplay -l lists no soundcards found after each reboot. It looks like I have both overlays installed:

LibreELEC:/flash/overlays # ls hifi*
hifiberry-amp.dtbo            hifiberry-dacplus.dtbo
hifiberry-amp100.dtbo         hifiberry-dacplusadc.dtbo
hifiberry-amp3.dtbo           hifiberry-dacplusadcpro.dtbo
hifiberry-amp4pro.dtbo        hifiberry-dacplusdsp.dtbo
hifiberry-dac.dtbo            hifiberry-dacplushd.dtbo
hifiberry-dac8x.dtbo          hifiberry-digi-pro.dtbo
hifiberry-dacplus-pro.dtbo    hifiberry-digi.dtbo
hifiberry-dacplus-std.dtbo

I will see if the PiHut can test the card to see whether it is faulty.

I have the exact same issue. I am on a pi 5:

Linux raspberrypi 6.6.20+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.20-1+rpt1 (2024-03-07) aarch64 GNU/Linux

I cannot get the BLSTR DAC to be recognized. Tried all of the above.

I am an absolute beginner and my Blstr dac was not working as well.
Everything in this thread is mostly gibberish to me.
However in an other tread a guy named CPN had the same problem but said he solved it.
I asked him what he did and he said: Right click on the speaker icon and choose the hifi berry dac. I did that and now it is working.

Thank you for your help but, unfortunately, when I right click on the speaker icon, all I see is the hdmi device. There is no listing for the hifiberry DAC. It looks like the operating system is not picking up the fact that the DAC is installed once argon config is run and the DAC is configured. I have checked that the cinfiguration has worked as the line dtoverlay=hifiberry-dacplus,slave has been added to the config.txt file and the system has been rebooted.

Just to advise that the DAC now works with a new case. I suspect the old case was faulty as the card showed up as soon as the the system booted from the NVMe SSD in the new case with the old configuration that previously wasn’t showing the card at all.

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