[Problème] Pas de son surround dans PulseAudio

Bonjour, j’ai un petit soucis avec la qualité du son qu’émet mon PC portable (HP, Debian 8 xfce)
Le son étant très médiocre j’ai donc installé Pulseaudio aussi que son interface graphique Pavucontrol.
Cependant dans les configurations, le son surround n’est pas mentionné alors que sur mon autre PC portable (Acer, Debian 8 xfce)
je peux choisir le son surround.
J’ai fait un comparatif et le second PC a les mêmes configurations et installations de paquets que mon PC principal.
Il y a-t-il moyen trouver dans les options la sortie surround ?
Merci d’avance.

00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02) 00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 02) 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06) 00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05) 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05) 00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05) 00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5) 00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05) 00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05) 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M] 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Redwood HDMI Audio [Radeon HD 5000 Series] 02:00.0 Network controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 03) 7f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02) 7f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02) 7f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02) 7f:02.1 Host bridge: Intel Corporation 1st Generation Core Processor QPI Physical 0 (rev 02) 7f:02.2 Host bridge: Intel Corporation 1st Generation Core Processor Reserved (rev 02) 7f:02.3 Host bridge: Intel Corporation 1st Generation Core Processor Reserved (rev 02)

Bonjour,
J’ai cherché et je suis tombé sur ce site :
https://wiki.debian.org/PulseAudio
J’ai suivi la méthode pour obtenir le 5.1
[mono]default-sample-channels = 6[/mono]

; default-sample-format = s16le ; default-sample-rate = 44100 ; alternate-sample-rate = 48000 default-sample-channels = 6 ; default-channel-map = front-left,front-right
mais dans la configuration de pulseaudio, il ne me propose toujours pas le son surround.
J’ai aussi un “daemon.conf.original” dans /etc/pulse/
Je ne sais pas à quoi il sert.

J’ai besoin de vous.