@drpixel

bah, oui. Y a de ca ! En tout ca, j'ai pu observer plus de nuisances que de bienfaits...

++
Oui lorsque je fais "pci=routeirq", voilà la partie du dmesg concernée :

PCI: Using ACPI for IRQ routing
PCI: Routing PCI interrupts for all devices because "pci=routeirq" specified
ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 17 (level, low) -> IRQ 177
ACPI: PCI Interrupt 0000:00:1c.1 -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:00:1c.2[C] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 23 (level, low) -> IRQ 193
ACPI: PCI Interrupt 0000:00:1d.1 -> GSI 19 (level, low) -> IRQ 201
ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:00:1d.3[D] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:00:1d.7[A] -> GSI 23 (level, low) -> IRQ 193
ACPI: PCI Interrupt 0000:00:1e.2[A] -> GSI 17 (level, low) -> IRQ 177
ACPI: PCI Interrupt 0000:00:1e.3 -> GSI 20 (level, low) -> IRQ 209
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:00:1f.3 -> GSI 19 (level, low) -> IRQ 201
ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI Interrupt 0000:06:01.0[A] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:06:01.2[A] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:06:01.3[A] -> GSI 18 (level, low) -> IRQ 185
ACPI: PCI Interrupt 0000:06:03.0[A] -> GSI 17 (level, low) -> IRQ 177
ACPI: PCI Interrupt 0000:06:08.0[A] -> GSI 16 (level, low) -> IRQ 169
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.0
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.0
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.0
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.1
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.1
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.1
PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.2
PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.2
PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.2