irq 18: nobody cared!

SATA 하드를 하나 장착하니
너무 많은 장치를 연결했는지 저런 메세지가 나옵니다.

부팅 옵션으로 acpi=off, pci=noacpi, acpi=noirq 를 번갈아 실험해보고,
커널 옵션 share interrupt 를 n 해보기도 했는데, 아무 소용 없었습니다.

bios 에서 irq 를 강제로 다른곳에 배정해보려 했는데, 그것도 안되네요.

다른 방법이 있을까요?
usb 를 irq5에 할당해보고 싶은데...

irq 18: nobody cared!
 [<c013752a>] __report_bad_irq+0x2a/0xa0
 [<c0136e90>] handle_IRQ_event+0x30/0x70
 [<c0137630>] note_interrupt+0x70/0xb0
 [<c0137000>] __do_IRQ+0x130/0x140
 [<c0104d46>] do_IRQ+0x46/0x70
 =======================
 [<c01031de>] common_interrupt+0x1a/0x20
 [<c0100710>] default_idle+0x0/0x40
 [<c0100739>] default_idle+0x29/0x40
 [<c01007d2>] cpu_idle+0x42/0x60
 [<c049a984>] start_kernel+0x154/0x170
 [<c049a3a0>] unknown_bootoption+0x0/0x1e0
handlers:
[<c02d7240>] (ide_intr+0x0/0x170)
Disabling IRQ #18

# lspci
0000:00:00.0 Host bridge: Intel Corp. 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02)
0000:00:01.0 PCI bridge: Intel Corp. 82865G/PE/P PCI to AGP Controller (rev 02)
0000:00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
0000:00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
0000:00:1d.2 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #3 (rev 02)
0000:00:1d.3 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)
0000:00:1d.7 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev c2)
0000:00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
0000:00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02)
0000:00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) SATA Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
0000:01:00.0 VGA compatible controller: nVidia Corporation NV35 [GeForce FX 5900XT] (rev a1)
0000:02:00.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 78)
0000:02:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
0000:02:07.0 RAID bus controller: Promise Technology, Inc. PDC20270 (FastTrak100 LP/TX2/TX4) (rev 02)

# cat /proc/interrupts
           CPU0       CPU1
  0:     194517     190067    IO-APIC-edge  timer
  1:        620        602    IO-APIC-edge  i8042
  8:          2          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 14:        846        600    IO-APIC-edge  ide0
 15:         23          1    IO-APIC-edge  ide1
 16:      21528      20262   IO-APIC-level  uhci_hcd, uhci_hcd, nvidia
 17:          0          0   IO-APIC-level  Intel ICH5
 18:     100066         95   IO-APIC-level  ide2, uhci_hcd
 19:         42          1   IO-APIC-level  eth1, uhci_hcd
 20:      81831          0   IO-APIC-level  eth0
 22:       2512       2438   IO-APIC-level  ide5
 23:          2          0   IO-APIC-level  ehci_hcd
NMI:          0          0
LOC:     384451     384451
ERR:          0
MIS:          0