Hi, I am no expert in Manjaro and I have a problem since the last update (the problem described below did not exist). Internal speaker works fine for my account (sudo enabled) but there is no device for normal user (no sudo privilege) : loudspeaker icon in task bar is stroken back in red. Note that if I plug a USB sound system (device-2 below), normal user see an audio output device and can play music through it normally. Any clue what can happen ? Here is info on my system 
System:
Kernel: 5.15.28-1-MANJARO x86_64 bits: 64 Desktop: KDE Plasma 5.24.3
Distro: Manjaro Linux
Machine:
Type: Laptop System: Dell product: Latitude 7480 v: N/A
serial: <superuser required>
Mobo: Dell model: 00F6D3 v: A00 serial: <superuser required> UEFI: Dell
v: 1.18.0 date: 06/05/2020
Battery:
ID-1: BAT0 charge: 55.3 Wh (100.0%) condition: 55.3/60.0 Wh (92.2%)
CPU:
Info: dual core model: Intel Core i5-7300U bits: 64 type: MT MCP cache:
L2: 512 KiB
Speed (MHz): avg: 807 min/max: 400/3500 cores: 1: 800 2: 829 3: 800
4: 800
Graphics:
Device-1: Intel HD Graphics 620 driver: i915 v: kernel
Device-2: Realtek Integrated Webcam HD type: USB driver: uvcvideo
Display: x11 server: X.Org v: 1.21.1.3 driver: X: loaded: modesetting
gpu: i915 resolution: 1: 1920x1080~60Hz 2: 1920x1080~60Hz
OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 21.3.7
Audio:
Device-1: Intel Sunrise Point-LP HD Audio driver: snd_hda_intel
Device-2: NAD USB Audio type: USB
driver: hid-generic,snd-usb-audio,usbhid
Sound Server-1: ALSA v: k5.15.28-1-MANJARO running: yes
Sound Server-2: PulseAudio v: 15.0 running: yes
Sound Server-3: PipeWire v: 0.3.48 running: yes
Network:
Device-1: Intel Ethernet I219-LM driver: e1000e
IF: enp0s31f6 state: down mac: <filter>
Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi
IF: wlp2s0 state: up mac: <filter>
Bluetooth:
Device-1: Intel Bluetooth wireless interface type: USB driver: btusb
Report: rfkill ID: hci0 state: up address: see --recommends