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XP IRQ's and sharing

6 posts in this topic

I think my install of Intel's chipset drivers went bonkers...

Have a look:

Resource Device Status

IRQ 9 Microsoft ACPI-Compliant System OK

IRQ 16 Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1 OK

IRQ 16 NVIDIA GeForce 8500 GT OK

IRQ 16 Intel® ICH9 Family USB Universal Host Controller - 2937 OK

IRQ 16 Intel® ICH9 Family PCI Express Root Port 1 - 2940 OK

IRQ 16 Intel® ICH9 Family PCI Express Root Port 5 - 2948 OK

IRQ 16 GIGABYTE GBB36X Controller OK

IRQ 21 Intel® ICH9 Family USB Universal Host Controller - 2938 OK

IRQ 18 Intel® ICH9 Family USB Universal Host Controller - 2939 OK

IRQ 18 Intel® ICH9 Family USB2 Enhanced Host Controller - 293C OK

IRQ 18 Intel® ICH9 Family USB Universal Host Controller - 2936 OK

IRQ 17 Standard Dual Channel PCI IDE Controller OK

IRQ 17 Intel® ICH9 Family PCI Express Root Port 6 - 294A OK

IRQ 17 Realtek RTL8168/8111 PCI-E Gigabit Ethernet NIC OK

IRQ 23 Intel® ICH9 Family USB Universal Host Controller - 2934 OK

IRQ 23 Intel® ICH9 Family USB2 Enhanced Host Controller - 293A OK

IRQ 19 Intel® ICH9 Family USB Universal Host Controller - 2935 OK

IRQ 20 Creative SB X-Fi OK

IRQ 0 System timer OK

IRQ 8 System CMOS/real time clock OK

IRQ 13 Numeric data processor OK

IRQ 1 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard OK

IRQ 4 Intel® ICH9 Family SMBus Controller - 2930 OK

That many devices on a single IRQ isn't good, right?

Well, this has me even more worried:

Shared:

Resource Device

I/O Port 0x0000A000-0x0000AFFF Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

I/O Port 0x0000A000-0x0000AFFF NVIDIA GeForce 8500 GT

I/O Port 0x00000000-0x00000CF7 PCI bus

I/O Port 0x00000000-0x00000CF7 Direct memory access controller

I/O Port 0x000003C0-0x000003DF Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

I/O Port 0x000003C0-0x000003DF NVIDIA GeForce 8500 GT

IRQ 23 Intel® ICH9 Family USB Universal Host Controller - 2934

IRQ 23 Intel® ICH9 Family USB2 Enhanced Host Controller - 293A

Memory Address 0xF2000000-0xF20FFFFF Intel® ICH9 Family PCI Express Root Port 5 - 2948

Memory Address 0xF2000000-0xF20FFFFF GIGABYTE GBB36X Controller

Memory Address 0xEC000000-0xEFFFFFFF Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

Memory Address 0xEC000000-0xEFFFFFFF NVIDIA GeForce 8500 GT

I/O Port 0x0000B000-0x0000BFFF Intel® ICH9 Family PCI Express Root Port 5 - 2948

I/O Port 0x0000B000-0x0000BFFF Standard Dual Channel PCI IDE Controller

IRQ 16 Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

IRQ 16 NVIDIA GeForce 8500 GT

IRQ 16 Intel® ICH9 Family USB Universal Host Controller - 2937

IRQ 16 Intel® ICH9 Family PCI Express Root Port 1 - 2940

IRQ 16 Intel® ICH9 Family PCI Express Root Port 5 - 2948

IRQ 16 GIGABYTE GBB36X Controller

IRQ 17 Standard Dual Channel PCI IDE Controller

IRQ 17 Intel® ICH9 Family PCI Express Root Port 6 - 294A

IRQ 17 Realtek RTL8168/8111 PCI-E Gigabit Ethernet NIC

Memory Address 0xD0000000-0xDFFFFFFF Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

Memory Address 0xD0000000-0xDFFFFFFF NVIDIA GeForce 8500 GT

IRQ 18 Intel® ICH9 Family USB Universal Host Controller - 2939

IRQ 18 Intel® ICH9 Family USB2 Enhanced Host Controller - 293C

IRQ 18 Intel® ICH9 Family USB Universal Host Controller - 2936

Memory Address 0xA0000-0xBFFFF PCI bus

Memory Address 0xA0000-0xBFFFF Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

Memory Address 0xA0000-0xBFFFF NVIDIA GeForce 8500 GT

I/O Port 0x000003B0-0x000003BB Intel® G33/G31/P35 Express Chipset PCI Express Root Port - 29C1

I/O Port 0x000003B0-0x000003BB NVIDIA GeForce 8500 GT

I/O Port 0x00000290-0x0000029F Motherboard resources

I/O Port 0x00000290-0x0000029F Motherboard resources

I/O Port 0x0000C000-0x0000CFFF Intel® ICH9 Family PCI Express Root Port 6 - 294A

I/O Port 0x0000C000-0x0000CFFF Realtek RTL8168/8111 PCI-E Gigabit Ethernet NIC

Not good?

Do I need to reinstall XP?

Or can I just update the chipset drivers with the latest?

I *did* have a problem with USB devices not working after reboot...

Edited by 303
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IRQ sharing of IRQ's that high is usually fine, although seeing your video card and the USB controller on 16 is probably why the USB isn't working. I'd say you may have some BIOS settings causing this, and going in and choosing a reset to the defaults (if that option exists) is probably a good start, although you may need to reinstall.

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Sharing IRQ 16 shouldn't be a problem...it's a virtual IRQ as well. The actual IRQs go from 0 through 15. Check your Advanced Configuration and Power Interface (ACPI) settings in the BIOS. If that's all working correctly Windows XP will take over IRQ control once it starts. I would try reinstalling the chipset drivers (using the latest version).

Here's a list of mine for comparison. Note that I have several devices sharing IRQ 16.

IRQ 0 System timer OK

IRQ 5 Intel® ICH8 Family SMBus Controller - 283E OK

IRQ 8 System CMOS/real time clock OK

IRQ 9 Microsoft ACPI-Compliant System OK

IRQ 13 Numeric data processor OK

IRQ 16 Intel® P965/G965/G35 PCI Express Root Port - 29A1 OK

IRQ 16 NVIDIA GeForce 7900 GT/GTO OK

IRQ 16 Intel® ICH8 Family USB Universal Host Controller - 2834 OK

IRQ 16 Intel® ICH8 Family PCI Express Root Port 1 - 283F OK

IRQ 16 NEC PCI to USB Open Host Controller OK

IRQ 16 1394B Host Controller OK

IRQ 16 Intel® ICH8 Family PCI Express Root Port 5 - 2847 OK

IRQ 16 JMicron JMB36X Controller OK

IRQ 17 Intel® ICH8 Family USB Universal Host Controller - 2835 OK

IRQ 17 Intel® ICH8 Family PCI Express Root Port 2 - 2841 OK

IRQ 17 Intel® PRO/1000 PT Desktop Adapter OK

IRQ 17 NEC PCI to USB Enhanced Host Controller OK

IRQ 17 JMB36X Standard Dual Channel PCIE IDE Controller OK

IRQ 18 Intel® ICH8 Family USB2 Enhanced Host Controller - 283A OK

IRQ 18 Intel® ICH8 Family PCI Express Root Port 3 - 2843 OK

IRQ 18 Intel® ICH8 Family USB Universal Host Controller - 2832 OK

IRQ 19 NEC PCI to USB Open Host Controller OK

IRQ 19 Intel® ICH8 Family USB Universal Host Controller - 2831 OK

IRQ 19 Intel® ICH8R/ICH9R SATA RAID Controller OK

IRQ 20 OHCI Compliant IEEE 1394 Host Controller OK

IRQ 21 VIA OHCI Compliant IEEE 1394 Host Controller OK

IRQ 23 Intel® ICH8 Family USB Universal Host Controller - 2830 OK

IRQ 23 Intel® ICH8 Family USB2 Enhanced Host Controller - 2836 OK

IRQ 23 Creative SB Audigy 2 ZS (WDM) OK

Edited by nmX.Memnoch
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IRQ sharing of IRQ's that high is usually fine, although seeing your video card and the USB controller on 16 is probably why the USB isn't working. I'd say you may have some BIOS settings causing this, and going in and choosing a reset to the defaults (if that option exists) is probably a good start, although you may need to reinstall.

The USB problem was fixed by reinstalling the Root Hubs, which all had yellow ! in front of them

This is a documented problem/bug/feature that is listed in the Intel chipset driver readme.

Edited by 303
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nmX...

not many options, it's a Gigabyte GA-P35-DQ6 rev 1.0 board btw

I usuall keep my BIOS settings lean (disable any unneeded devices, etc.)

and IRQ's and PCI assignments, etc. are set to "Auto"

I've had to reinstall XP about 3 times since I built this rig within the last month (first time ever installing XP!), and I've finally got it running like it needs to aka not locking up / no chronic registry errors.

Upgrading from a 98SE system with an Athlon 700MHz and a TNT2MX video card to an E6750 Core2Duo with a GeForce 8500GT sure is a BIG difference!

So, I guess if it's not broke...

I'll try the reload defaults thing and poke around a bit

Edited by 303
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The typical rules I try to follow are:

1. No IRQ sharing with the Video card

2. No IRQ sharing with an I/O controller (like the HDDC) that will perform a DMA.

Sometimes you don't get an option to change them.

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