Hum... apparement personne ne sait comment faire pour utiliser pleinnement une carte son 7.1 sous Fedora...
Petit détail si ca peut aider au probleme :
--> le résultat de la commande lspci :
00:00.0 Host bridge: ATI Technologies Inc Radeon Xpress 200 Host Bridge (rev 01)
00:02.0 PCI bridge: ATI Technologies Inc RS480 PCI-X Root Port
00:11.0 IDE interface: ATI Technologies Inc 437A Serial ATA Controller (rev 80)
00:12.0 IDE interface: ATI Technologies Inc 4379 Serial ATA Controller (rev 80)
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller (rev 80)
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 81)
00:14.1 IDE interface: ATI Technologies Inc Standard Dual Channel PCI IDE Controller (rev 80)
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80)
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge (rev 80)
01:00.0 VGA compatible controller: nVidia Corporation G72 [GeForce 7300 LE] (rev a1)
02:02.0 Multimedia controller: Philips Semiconductors SAA7134/SAA7135HL Video Broadcast Decoder (rev 01)
02:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
02:06.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80)
Merci pour votre aide !!