[USB] Conflit IRQ

[Adeimantos]

Après avoir désactivé dans le BIOS la prise en charge ACPI (étant donné 
que les chipsets VIA sur les cartes mères Apollo ne permettent pas la 
gestion ACPI), enlevé les paquet Ubuntu acpi, acpid, powermangmt ... la 
carte PCI (HUB) Lucent Microelectronics 4 ports est bien reconnue au 
démarrage du système, ainsi que chacun des ports. Mais apparemment, ce 
que je soupçonnais semble être réel : un conflit d'IRQ (mauvaise prise 
en charge du port PCI ?).
Voici ce que renvoie la commande 'dmesg' (notez la ligne en italiques):
cpci_hotplug: CompactPCI Hot Plug Core version: 0.2
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x1001
pciehp: acpi_pciehprm:get_device PCI ROOT HID fail=0x1001
usbcore: registered new driver usbfs
usbcore: registered new driver hub
USB Universal Host Controller Interface driver v2.2
PCI: Found IRQ 9 for device 0000:00:07.2
/IRQ routing conflict for 0000:00:07.2, have irq 10, want irq 9/
PCI: Sharing IRQ 9 with 0000:00:14.0
PCI: Sharing IRQ 9 with 0000:00:14.1
PCI: Sharing IRQ 9 with 0000:00:14.2
PCI: Sharing IRQ 9 with 0000:00:14.3
uhci_hcd 0000:00:07.2: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controlleruhci_hcd 0000:00:07.2: irq 10, io base 0xe400
uhci_hcd 0000:00:07.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
8139too Fast Ethernet driver 0.9.27
PCI: Found IRQ 12 for device 0000:00:12.0
eth0: RealTek RTL8139 at 0xe800, 00:80:ad:7a:9a:a7, IRQ 12
eth0:  Identified 8139 chip type 'RTL-8100'
8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
NET: Registered protocol family 17
PCI: Found IRQ 9 for device 0000:00:14.0
IRQ routing conflict for 0000:00:07.2, have irq 10, want irq 9
PCI: Sharing IRQ 9 with 0000:00:14.1
PCI: Sharing IRQ 9 with 0000:00:14.2
PCI: Sharing IRQ 9 with 0000:00:14.3
ohci_hcd 0000:00:14.0: Lucent Microelectronics USS-344S USB Controller
ohci_hcd 0000:00:14.0: irq 9, pci mem 0xd7001000
ohci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
PCI: Found IRQ 9 for device 0000:00:14.1
IRQ routing conflict for 0000:00:07.2, have irq 10, want irq 9
PCI: Sharing IRQ 9 with 0000:00:14.0
PCI: Sharing IRQ 9 with 0000:00:14.2
PCI: Sharing IRQ 9 with 0000:00:14.3
ohci_hcd 0000:00:14.1: Lucent Microelectronics USS-344S USB Controller (#2)
ohci_hcd 0000:00:14.1: irq 9, pci mem 0xd7002000
ohci_hcd 0000:00:14.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 1 port detected
PCI: Found IRQ 9 for device 0000:00:14.2
IRQ routing conflict for 0000:00:07.2, have irq 10, want irq 9
PCI: Sharing IRQ 9 with 0000:00:14.0
PCI: Sharing IRQ 9 with 0000:00:14.1
PCI: Sharing IRQ 9 with 0000:00:14.3
ohci_hcd 0000:00:14.2: Lucent Microelectronics USS-344S USB Controller (#3)
ohci_hcd 0000:00:14.2: irq 9, pci mem 0xd7003000
ohci_hcd 0000:00:14.2: new USB bus registered, assigned bus number 4
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 1 port detected
PCI: Found IRQ 9 for device 0000:00:14.3
IRQ routing conflict for 0000:00:07.2, have irq 10, want irq 9
PCI: Sharing IRQ 9 with 0000:00:14.0
PCI: Sharing IRQ 9 with 0000:00:14.1
PCI: Sharing IRQ 9 with 0000:00:14.2
ohci_hcd 0000:00:14.3: Lucent Microelectronics USS-344S USB Controller (#4)
ohci_hcd 0000:00:14.3: irq 9, pci mem 0xd7004000
ohci_hcd 0000:00:14.3: new USB bus registered, assigned bus number 5
hub 5-0:1.0: USB hub found
hub 5-0:1.0: 1 port detected