I had a problem with sound not coming back after I use the Mute keys on my laptop (Fn + F1). You can hit the toggle and it says Muted/Unmuted on the LXDE Volume widget. Ran a bunch of the tests you ran earlier and everything checked out fine. Don't remember how I found it, but if I looked in QasMixer the dot at the bottom of the Master Volume slider was not filled. Clicked that and suddenly there is sound. May have been when I was in Alsamixer GUI and it the speaker icons above the Master control were white and did not have the "sound waves" (parenthesis symbols) on them. You can click the icons to turn them on and off.

Start a stream and set the volume level pretty high, so you can see if the sound comes on when you click either of the control icons I referenced above.

distrowatch listed gnuinos for upcoming review, distro released earlier?

This is the first I have heard of gnuinos being mentioned in distrowatch.

aitor you release a fork today and have time time to trouble shoot, how?

testing fork iso with 6.1 incoming?

Fork? Sorry,  but I don't know what are you talking about. I didn't release anything today.

testing fork iso with 6.1 incoming?

sudo apt-get install linux-headers-5.19.0-0
dkms: running auto installation service for kernel 5.19.0-0.deb11.2-rt-amd64:Error! Could not locate dkms.conf file.
File: /var/lib/dkms/snd_hda_codec_cs8409/1.0/source/dkms.conf does not exist.
 failed!
run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 4

Remove the folder /var/lib/dkms/snd_hda_codec_cs8409 and reinstall the headers:

$ sudo apt-get --reinstall install linux-headers-5.19.0-0

aplay /dev/urandom -f dat -D hw:1,0
aplay: main:830: audio open error: No such file or directory

how install daedalus with signed 5.19.13 or highter, kernel 5.19 give kernel panic at boot

hyphens set and it install correctly, the script must be altered and include specific hardware numbers.
davidjo at github go into more detail in issues pages.

scritps build developed on higher linux kernel

$ aplay /dev/urandom -f dat -D hw:1,0

or any other card,device pair?

install 5.19 first install failed. output

$ sudo apt-get install linux-headers-5.19.0-0
...

Is that the running kernel? Higher versions like 5.19.0-2 do exist in Daedalus.

sudo apt-get install linux-headers-5.19.0-0
dkms: running auto installation service for kernel 5.19.0-0.deb11.2-rt-amd64:Error! Could not locate dkms.conf file.
File: /var/lib/dkms/snd_hda_codec_cs8409/1.0/source/dkms.conf does not exist.
 failed!
run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 4

Files located at /usr/src/snd_hda_codec_cs8409-1.0/ are copied to /var/lib/dkms/snd_hda_codec_cs8409/1.0/source/ where the build process is carried out.
I guess that you forgot to edit dkms.conf in /usr/src/snd...

alsamixer cli must have Cirrus Logic CS8409

stable is Cirrus Logic Generic
backport is Cirrus Logic CS8409 with aitor install instructions

adding blacklist snd_hda_codec_generic not sound after reboot
alsamixer with blacklist  install snd_hda_codec_generic /bin/false on shows pulse no other card options.

sudo pulseaudio -k
E: [pulseaudio] main.c: Failed to kill daemon: No such process

sudo insmod ./snd-hda-codec-cs8409.ko sadf
insmod: ERROR: could not load module ./snd-hda-codec-cs8409.ko: No such file or 
directory

install 5.19 first install failed. output

sudo apt-get install linux-headers-5.19.0-0
dkms: running auto installation service for kernel 5.19.0-0.deb11.2-rt-amd64:Error! Could not locate dkms.conf file.
File: /var/lib/dkms/snd_hda_codec_cs8409/1.0/source/dkms.conf does not exist.
 failed!
run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 4

synaptic install of 5.19 success. on bootin kernel panic

new 5.18 kernel find card. daedalus 5.10.70 older than backports. ceres at 5.14.9 according to distrowatch. no 6.1 backports.

below is snd blacklist to prevent conflict with othe snd settings.
/etc/modprobe.d/blacklist.conf                       

blacklist snd_soc_skl

You'll find blacklisting worked, but the codec may be reverted back. Here you are one scenario where sound modules are autoloaded on boot despite blacklisting:

https://superuser.com/questions/429255/ … eze-solved

In such cases, it may be a good idea to block loading as well. For example:

blacklist snd_hda_codec_generic
install snd_hda_codec_generic /bin/false

no sound after reboot

speaker-test -c2 -t wave
...

The following command sends ramdom noise output to hw:0,0 (i.e. :<card>,<device>)

$ aplay /dev/urandom -f dat -D hw:0,0
Playing raw data '/dev/urandom' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
^CAborted by signal Interrupción...