Hello, I'm having trouble getting the 2.6 kernel working on my system. I have tried 2.6.6 and 2.6.7 but I get the same error message each time. I am currently running Debian Sarge installed with the net install (2.4.25-1-386) I did not install the 2.6 kernel with the net installer because it could not partition my disk, and thus could not install. Here is my dmesg -> http://www.pastebin.com/82515

This IRQ error slows my system down to a crawl, so much so that it takes 15+ minutes to boot up. I have searched google many times and have found other people with my problem, but none with a solution. I have tried kernel paramaters "noapic nolapic and acip=off" without much luck, noapic is the only one that gets rid of the error, but it is replaced by "Disabling IRQ #9" and my system is slowed even more. I have also tried "noirqdebug" but it does not seem to effect the boot at all. My .config file can be found here: http://www.pastebin.com/82518

I have also noticed erratic mouse movment under the 2.6 kernel, including loss of mouse wheel, and lack of smooth movment (very choppy), but that is secondary to getting it up and running.

Here is some more information about my setup:

/sbin/lspci

0000:00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02)
0000:00:01.0 PCI bridge: Intel Corp. 82875P Processor to AGP Controller (rev 02)
0000:00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #1 (rev 02)
0000:00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #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 #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. 82801BA/CA/DB/EB/ER Hub interface to PCI Bridge (rev c2)
0000:00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge (rev 02)
0000:00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) Ultra ATA 100 Storage Controller (rev 02)
0000:00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) Serial ATA 150 Storage Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc RV350 NJ [Radeon 9800 XT]
0000:01:00.1 Display controller: ATI Technologies Inc RV350 NJ [Radeon 9800 XT] (Secondary)
0000:02:02.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04)
0000:02:02.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port (rev 04)
0000:02:0c.0 Ethernet controller: Intel Corp. 82540EM Gigabit Ethernet Controller (rev 02)

cat /proc/cpuinfo

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
stepping : 9
cpu MHz : 2993.477
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid
bogomips : 5914.62

As I said in the title, I will give a reward of $20 via paypal to whomever can help me get my system up and running fast and well enough to be usable, and preferably without errors. If you do not want the money, I can donate it to a cause of your choosing (so long as they take paypal).
Thank you for your time,
-Eric Pierce

"I have tried kernel paramaters "noapic nolapic and acip=off" "

Try acpi. Spelling is very important in code. I would try the boot option pci=noacpi
The real solution is probably to be found in recompiling the kernel and selecting support for the right chipset on the Device Drivers> ATA/ATAPI/MFM/RLL support> menu. I only found out what works on our computers by trial and error. So you'll probably find it will be you that wins your own prize by fixing this yourself. Goodluck

the spelling error was actully only in my post, I have been spelling it correctly during boot. I have probably re-compiled the kernel 25 times, and I will continue to do so. Is there any way of detecting what driver would be appropriate for my chipset?

I just installed my new system wih Mandrake 10 and I had a similar issue. Mind you that my mobo is a Asus P4P800 SE (with i865) so things might be different but... who knows.
I was getting "Disabling IRQ #18" and - because of this - the boot was really, really slow. I played a little bit with the BIOS settings and these warnings stopped when - in the IDE configuration - I changed the "Enhanced Mode Support On" from P-ATA+S-ATA to S-ATA. I thought I had to use that since I had an older PATA drive but it was not necessary.
If this doesn't help you, then you have to dig into your hardware conf.

Same Mobo : P4P800 SE

I do not get any slowness at startup but have experienced some rather long freezes during X sessions. I just compiled a tight new kernel 2.6.7 that still lacks proper sound support and needs further tweakings but it seems the freezes have gone away.