No sound, please help!

I was on a local (french) server, i switched to "Main server", checked for additional drivers, there was nothing more to add.

Still not working.

the only thing i can add is "code source", in the zoein software menu.
Should i try that ?

I see no screenshot of this. Does it show any dropdown menu of devices?

The screenshot i sent i what's happen when i hit F6, no dropdown menu, just what you see (this "fictive outpud" window volume bar)

well in english its "dummy output"

"Dummy Output" OK, we see occasional cases of that.
Websearch using AMD/ATI Device 1637 dummy output ubuntu 20.04" for your sound device gives:

Only suggestion I see is maybe try a later linux kernel. But using a later version kernel not tested by Zorin devs may or may work, but could give you other issues.

EDIT: Did you try this:

pulseaudio -k && sudo alsa force-reload

Also:
I see you have bought Pro. That gives you entitlement to support from Zorin devs. You could try an email to them, but please be patient for any reply as there are only two of them.

Press fn + f6

Yes that is exaclty my problem, i have the same computer, Huawei Matebook D16.

It's the first time i unstall a linux that i want to use everyday, this is why i bought pro, i tought i wouldn't have any problem... yes i will maybe try to contact the support. Don't feel like touching the kernel, i am a absolute noob.

DIdn't try your last suggestion, while playing with all my settings, i have desactivated the trackpad !..f... !.. and i don't have any mouse for now... so i cannot do anything anymore.

Thanks for your help.

so maybe my only chance is to unstall a linux not based on ubuntu ?

if you are dual booting, shut down windows completely and reboot

Select the hd audio

yes i am dual boot, i tried, still not working

tried the pulseaudio command, still not working.

still not working.

Alright i dig a bit deeper for you. Please post the outputs from lsusb and lspci

lsusb :

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 13d3:5476 IMC Networks HD Camera
Bus 003 Device 003: ID 8087:0029 Intel Corp.
Bus 003 Device 002: ID 046d:c542 Logitech, Inc. Wireless Receiver
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 27c6:5110 Shenzhen Goodix Technology Co.,Ltd. Goodix Fingerprint Device
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lspci :

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 7
01:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
02:00.0 Non-Volatile memory controller: Silicon Motion, Inc. Device 1001 (rev 03)
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c7)
03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637
03:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
03:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1
03:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1
03:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 01)

Maybe you should read this forum a bit. Seems kernel 5.4 works for them.

If you want to try

sudo apt install linux-headers-5.4.0-91-generic linux-modules-5.4.0-91-generic linux-modules-extra-5.4.0-91-generic linux-image-5.4.0-91-generic

Reboot, enter grub and select the 5.4.0-91 kernel

gonna try that. But what does it mean "enter grub" ?