I need some help according the sound system on my notenbook.

# chk OS version
uwe@tux2:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy

# within settings
I can select internal speakers and internal mic only
no sound with test buttons (left/right)

# with aplay I can hear the sound as root
uwe@tux2:~$ sudo aplay /usr/share/sounds/alsa/Noise.wav
Wiedergabe: WAVE '/usr/share/sounds/alsa/Noise.wav' : Signed 16 bit Little Endian, Rate: 48000 Hz, mono


# no sound as normal user
uwe@tux2:~$ aplay /usr/share/sounds/alsa/Noise.wav
Wiedergabe: WAVE '/usr/share/sounds/alsa/Noise.wav' : Signed 16 bit Little Endian, Rate: 48000 Hz, mono

# checked my permission in /etc/group
audio:29:uwe,pulse

# checked /dev
uwe@tux2:~$ ls -la /dev/ | grep snd
drwxr-xr-x 3 root audio 280 Okt 6 09:47 snd

# tried to beep
uwe@tux2:~$ beep
beep: Error: Could not open any device

Every hint is wellcome!

Uwe