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I'm having problem running Red Hat WS v.3 with Nvidia Nforce3 chipset.
Problem is with the NIC Card (on board or linksys) Red Hat see and install the NIC's but will not assign an IRQ. Red Hat support team says it is the Chip Set... the BIOS that will not assign the IRQ.
I have used/tried both BIOS rev. F11 and F12, nether one over them will work.
One thing Red Hat wanted me to check on in the BIOS is, if the PnP was turn on or off. With both BIOS installed I can't find the PnP option??
Red Hat told me to contact the vendor for assistance with using or installing their drivers.

Mother Board = GigaByte K8N Pro with chip set 150
Proccessor = AMD64

(lspci)
00:00.0 Host bridge: nVidia Corporation nForce3 Host Bridge (rev a4)
00:01.0 ISA bridge: nVidia Corporation nForce3 LPC Bridge (rev a6)
00:01.1 SMBus: nVidia Corporation nForce3 SMBus (rev a4)
00:02.0 USB Controller: nVidia Corporation nForce3 USB 1.1 (rev a5)
00:02.1 USB Controller: nVidia Corporation nForce3 USB 1.1 (rev a5)
00:02.2 USB Controller: nVidia Corporation nForce3 USB 2.0 (rev a2)
00:06.0 Multimedia audio controller: nVidia Corporation nForce3 Audio (rev a2)
00:08.0 IDE interface: nVidia Corporation nForce3 IDE (rev a5)
00:0a.0 PCI bridge: nVidia Corporation nForce3 PCI Bridge (rev a2)
00:0b.0 PCI bridge: nVidia Corporation nForce3 AGP Bridge (rev a4)
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
01:07.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04)
01:07.1 Input device controller: Creative Labs SB Audigy MIDI/Game port (rev 04)01:07.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port (rev 04)
01:08.0 Ethernet controller: Linksys NC100 Network Everywhere Fast Ethernet 10/100 (rev 11)
01:09.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
01:09.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
01:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)
01:0c.0 Unknown mass storage controller: Integrated Technology Express, Inc. IT/ITE8212 Dual channel ATA RAID controller (PCI version seems to be IT8212, embedded seems (rev 11)
01:0d.0 RAID bus controller: Silicon Image, Inc. (formerly CMD Technology Inc) SiI 3512 [SATALink/SATARaid] Serial ATA Controller (rev 01)
01:0e.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)
02:00.0 VGA compatible controller: ATI Technologies Inc Radeon R300 ND [Radeon 9700 Pro]
02:00.1 Display controller: ATI Technologies Inc Radeon R300 [Radeon 9700 Pro] (Secondary)

are you having problems connecting to internet with the linksys card or is the problem just assigning an irq to it?

I can't connect to the internet.
If i set the IRQ for ether NIC Card, it will take it, but will not access the internet.
any other pc on my network can not ping the static ip that i have assign to it.

Easy solution...

Step 1. Delete redhat and throw box out window.

Step 2. Install version of Linux that supports and fully enables all acpi features at first install. Suggestions include Suse, Mandrake, and Gentoo if you feel like having fun. Stick to distro's with 2.6 kernels so that the nForce motherboard will be enabled without extra drivers from nvidia.com