[realtek] irq conflicts?

[WSteffen]

I recently acquired an Hp pavilion a1210n which uses an ASUS A8AE-LE
mother board with a Realtek network chip and an ATI IPX SB400 chip
that provides sound, ide, SATA, and USB functions. Up to this point
the only way I can get the USB to work is to set ACPI to on in the
kernel along with the other ide usb parameters. However when I set
ACPI on the realtek (eth0) no longer functions properly. It looks to
me to be an IRQ problem as I can with ethereal  see ARP requests
going out with replys coming back, but I get destination unreachable.
Does anyone know if this configuration can be made to work/has it
working??
Below is some related information.

/proc/pci
PCI devices found:
   Bus  0, device   0, function  0:
     Class 0600: PCI device 1002:5950 (rev 16).
       Master Capable.  Latency=64.
   Bus  0, device   1, function  0:
     Class 0604: PCI device 1002:5a3f (rev 0).
       Master Capable.  Latency=99.  Min Gnt=8.
   Bus  0, device  18, function  0:
     Class 0101: PCI device 1002:4379 (rev 0).
       IRQ 11.
       Master Capable.  Latency=64.
       I/O at 0xff00 [0xff07].
       I/O at 0xfe00 [0xfe03].
       I/O at 0xfd00 [0xfd07].
       I/O at 0xfc00 [0xfc03].
       I/O at 0xfb00 [0xfb0f].
       Non-prefetchable 32 bit memory at 0xfe02f000 [0xfe02f1ff].
   Bus  0, device  19, function  0:
     Class 0c03: PCI device 1002:4374 (rev 0).
       IRQ 10.
       Master Capable.  Latency=64.
       Non-prefetchable 32 bit memory at 0xfe02e000 [0xfe02efff].
   Bus  0, device  19, function  1:
     Class 0c03: PCI device 1002:4375 (rev 0).
       IRQ 10.
       Master Capable.  Latency=64.
       Non-prefetchable 32 bit memory at 0xfe02d000 [0xfe02dfff].
   Bus  0, device  19, function  2:
     Class 0c03: PCI device 1002:4373 (rev 0).
       IRQ 10.
       Master Capable.  Latency=64.
       Non-prefetchable 32 bit memory at 0xfe02c000 [0xfe02cfff].
   Bus  0, device  20, function  0:
     Class 0c05: PCI device 1002:4372 (rev 17).
       I/O at 0x400 [0x40f].
       Non-prefetchable 32 bit memory at 0xfe02b000 [0xfe02b3ff].
  Bus  0, device  20, function  1:
     Class 0101: PCI device 1002:4376 (rev 0).
       IRQ 11. Bus  0, device  20, function  1:
       Master Capable.  Latency=64.
       I/O at 0xf900 [0xf90f].
   Bus  0, device  20, function  3:
     Class 0601: PCI device 1002:4377 (rev 0).
   Bus  0, device  20, function  4:
     Class 0604: PCI device 1002:4371 (rev 0).
       Master Capable.  Latency=64.
   Bus  0, device  20, function  5:
     Class 0401: PCI device 1002:4370 (rev 2).
       IRQ 3.
       Master Capable.  Latency=64.  Min Gnt=2.
       Non-prefetchable 32 bit memory at 0xfe02a000 [0xfe02a0ff].
   Bus  0, device  24, function  0:
     Class 0600: PCI device 1022:1100 (rev 0).
   Bus  0, device  24, function  1:
     Class 0600: PCI device 1022:1101 (rev 0).
   Bus  0, device  24, function  2:
     Class 0600: PCI device 1022:1102 (rev 0).
   Bus  0, device  24, function  3:
     Class 0600: PCI device 1022:1103 (rev 0).
   Bus  1, device   5, function  0:
     Class 0300: PCI device 1002:5954 (rev 0).
       IRQ 3.
       Master Capable.  Latency=64.  Min Gnt=8.
       Prefetchable 32 bit memory at 0xd8000000 [0xdfffffff].
       I/O at 0xee00 [0xeeff].
       Non-prefetchable 32 bit memory at 0xfdef0000 [0xfdefffff].
   Bus  2, device   3, function  0:
     Class 0200: PCI device 10ec:8139 (rev 16).
       IRQ 10.
       Master Capable.  Latency=64.  Min Gnt=32.Max Lat=64.
       I/O at 0xdc00 [0xdcff].
       Non-prefetchable 32 bit memory at 0xfddff000 [0xfddff0ff].
   Bus  2, device   5, function  0:
     Class 0c00: PCI device 1106:3044 (rev 128).      IRQ 255.
       Master Capable.  Latency=64.  Max Lat=32.
       Non-prefetchable 32 bit memory at 0xfddfe000 [0xfddfe7ff].
      I/O at 0xdf00 [0xdf7f].
   Bus  2, device   9, function  0:
     Class 0703: PCI device 1057:3052 (rev 4).
       IRQ 255.
       Master Capable.  Latency=64.  Min Gnt=1.Max Lat=62.
       Non-prefetchable 32 bit memory at 0xfddfd000 [0xfddfdfff].
       I/O at 0xda00 [0xdaff].
   Bus  2, device  10, function  0:
     Class 0200: PCI device 1317:0985 (rev 17).
       IRQ 5.
       Master Capable.  Latency=64.  Min Gnt=255.Max Lat=255.
       I/O at 0xd800 [0xd8ff].
       Non-prefetchable 32 bit memory at 0xfddfc000 [0xfddfc3ff].

lspci output:
00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 10)
00:01.0 PCI bridge: ATI Technologies Inc: Unknown device 5a3f
00:12.0 IDE interface: ATI Technologies Inc ATI 4379 Serial ATA Controller
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 11)
00:14.1 IDE interface: ATI Technologies Inc Standard Dual Channel PCI 
IDE Controller ATI
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge
00:14.5 Multimedia audio controller: ATI Technologies Inc IXP SB400 
AC'97 Audio Controller (rev 02)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS480 [Radeon 
Xpress 200G Series]
02:03.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL-8139/8139C/8139C+ (rev 10)
02:05.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host 
Controller (rev 80)
02:09.0 Modem: Motorola: Unknown device 3052 (rev 04)
02:0a.0 Ethernet controller: Linksys NC100 Network Everywhere Fast 
Ethernet 10/100 (rev 11)



  Bus  0, device  20, function  1: