[Nitro AN515-55, Realtek ALC295, Black Headphone Out, Right] Playback problem

I have a double boot : in Windows 11, the sound works just fine, with the speakers and with a headset plugged in. But in Ubuntu (my version is Ubuntu 22.04 LTS), the sound works fine with the speakers, but when i plug a headset in my jack port (computer model : Acer Nitro 5), I can hear the sound playing but there is a high hissing sound bothering me too. This hissing sound seems to briefly stop when a sound is played, before re-appearing. The volume of the sound has no impact on the volume of the hissing sound (which is playing even when the sound is at 0%). I tried playing with every volume playback gauge using the "alsamixer" terminal command, but it does'nt have any impact.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 5.15.0-41.44-generic 5.15.39
Uname: Linux 5.15.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: douve 6826 F.... pulseaudio
 /dev/snd/controlC1: douve 6826 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Jul 16 18:50:00 2022
InstallationDate: Installed on 2022-05-26 (50 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Black Headphone Out, Right
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: None of the above
Title: [Nitro AN515-55, Realtek ALC295, Black Headphone Out, Right] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/20/2021
dmi.bios.release: 2.6
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V2.06
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Stonic_CMS
dmi.board.vendor: CML
dmi.board.version: V2.06
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.06
dmi.ec.firmware.release: 2.5
dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.06:bd08/20/2021:br2.6:efr2.5:svnAcer:pnNitroAN515-55:pvrV2.06:rvnCML:rnStonic_CMS:rvrV2.06:cvnAcer:ct10:cvrV2.06:sku0000000000000000:
dmi.product.family: Nitro 5
dmi.product.name: Nitro AN515-55
dmi.product.sku: 0000000000000000
dmi.product.version: V2.06
dmi.sys.vendor: Acer