fix for most of UT3 problems (In game Studdering, Crashing, Whatever)

**ghostkilla20** · 12-22-2007, 10:40 PM

Ok people its not the game thats messed up if your having problems with it its your bios configuration that in return makes UT3 gameplay choppy and creates low framerates. Epic can't recreate your problems wonder why??? It has nothing to do with the game or Vista it's your IRQ Resources. A old solution to a new problem. In your bios make sure your Video Card unless in SLI mode, Hardrives, Ram, Network Cards, and Soundcards don't share the same IRQ. It can be changed from your bios and you can see what Device uses what IRQ in Device Manager. Go to Device Manager Click View and select Reseources by type then double click interrupt request section. When you do this you should be able to see what your devices irq's are and if they are sharing, if they are sharing irq's like a hardrive and a soundcard share irq 6, which was my problem either move the sound card over a slot in the motherboard. or disable devices on your motherboard to free up irq's so the device that is using the cpu more can have it own irq like disabling the serial com port, or the ecp printer port, or even the firewire port. Sharing a Harddrive with USB irq is ok just make sure you share a device that uses the cpu a lot with a device that doesn't use the cpu that much.

Just follow these steps and your gaming will be smooth as butter

Fix also works for Gears of War will post in other forum soon

The irq's are also viewable when your computer is booting but only for a split second in the lower right hand corner of your screen.

**cel4145** · 12-22-2007, 11:56 PM

Interesting solution. If I'm not mistaken, we've come full circle. Wasn't there an issue with IRQ conflicts with the original UT?

**ghostkilla20** · 12-23-2007, 01:36 AM

yes there was cel. UT3 is mostly based around the CPU no matter how much they upgrade there game engine. CPU and IRQ need to me in since for games to work... o yeh nice let me guess music producer if im wrong hey it was a educated guess

**dirtydog** · 12-23-2007, 04:54 AM

Originally Posted by cel4145

Interesting solution. If I'm not mistaken, we've come full circle. Wasn't there an issue with IRQ conflicts with the original UT?

How would a game cause IRQ conflicts?

**Stryke** · 12-23-2007, 06:35 AM

It's not the game that causes IRQ-problems. The IRQ-problems exist already, it's just that the game points them out (by stuttering for example).

**Henrik** · 12-23-2007, 06:44 AM

It's a legitimate concern, one most people don't look into enough if at all. I always try to make sure my IRQ's are conflict/share free when possible, but I haven't done any optimizing in a while and I'm sure I've been through a few hardware changes. Might be able to get some better smoothness... alas I must wait til Jan. 6 when I get back home as I'm on vacation at the moment..

**madZ** · 12-23-2007, 06:49 AM

I need help here. Haven't fiddled around with stuff like this before. My X1950 AGP is sharing IRQs with two of my USB porsts which are perpetually connected to the Internet and the other to my printer. Now, I doubt I would have the option for disabling any of these features. A lil' help here dude.

PS: Happy holls Bersy

Peace \/

**Henrik** · 12-23-2007, 08:19 AM

You might be able to reassign the IRQ's of the USB ports in Control Panel - System - Device Manager

**Epickiller** · 12-23-2007, 08:42 AM

How do you change the USB irqs? I'm in device manager...

**EduardvalX** · 12-23-2007, 09:41 AM

So how can i change it,to which IRQ i should change a device ,i have several devices listed in same IRQ's example 16,17

**msny** · 12-23-2007, 11:04 AM

Originally Posted by EduardvalX

So how can i change it,to which IRQ i should change a device ,i have several devices listed in same IRQ's example 16,17

Just a heads up WARNING from an experienced IT guy.

Doing so incorrectly could give you a non-operating
system with multiple conflicts. IRQ's are assigned automagically
for a good reason. This is not for the beginner.

Be carefull out there.

**ghostkilla20** · 12-23-2007, 11:10 AM

Originally Posted by Epickiller

How do you change the USB irqs? I'm in device manager...

you can change device irq's in your bios if you have to share a irq make sure you share a device that uses the cpu a lot with a device that doesnt use your cpu that much like a video card with your usb mouse or keyboard that guarantees the you video card gets more access time to the cpu

to change irq's check pci configuration in your bios i think its in the pci/pnp configuration menu in most motherboards then manually change irqs

**ghostkilla20** · 12-23-2007, 11:34 AM

check out these pages

http://www.helpwithpcs.com/upgrading...q-settings.htm

http://www.pcmus.com/irq.htm

**madZ** · 12-23-2007, 01:26 PM

Originally Posted by Bersy

You might be able to reassign the IRQ's of the USB ports in Control Panel - System - Device Manager

Yeah dude, I tried that, go to the properties and then the resources tab, I know, the problem is that the damn thing is grayed out. I googled(god bless it) on the problem and it said that I had to edit my darn BIOS for that.

I then went to the ASUS site and downloaded the BIOS modifier for my system. But before I do something drastic, I just want to confirm, "Is that what I am supposed to do"

Peace \/

**ghostkilla20** · 12-23-2007, 05:21 PM

Originally Posted by madZ

Yeah dude, I tried that, go to the properties and then the resources tab, I know, the problem is that the damn thing is grayed out. I googled(god bless it) on the problem and it said that I had to edit my darn BIOS for that.

I then went to the ASUS site and downloaded the BIOS modifier for my system. But before I do something drastic, I just want to confirm, "Is that what I am supposed to do"

Peace \/

I'd change it from the bios but hey i never tried a utility hey what ever you chose is your choice .

**Enforcer-5** · 12-23-2007, 05:34 PM

Yes be very carefull changing your IRQ cause some are the same to work together and are assigned that IRQ for a reason. Listen to msny he knows his stuff ^.^

**martinblank** · 12-23-2007, 06:39 PM

Guys, this won't fix anything. If two or more devices share the same IRQ, it won't cause a problem. Changing IRQs in the BIOS will not do anything, as windows is an ACPI enabled OS, which means it overrides the IRQ configuration specified by the BIOS and assigns it's own IRQs that do not cause conflicts.

You can disable ACPI mode, but good luck configuring the IRQs yourself

Also with ACPI mode disabled, a lot of basic functions of a modern computer will stop working, like auto shut down. When you shut down the computer, you will get that message that says "It is now safe to turn off your computer", instead of just automatically powering off.

**ghostkilla20** · 12-23-2007, 11:22 PM

no you don't have to disable windows acpi.... and irq's in the bios overides everything are you crazy a software thing like acpi doesn't override the system information backbone of the computer, which is the bios. leave the acpi on follow the steps i put forth then come talk to me. Even if you don't have computer issues follow my steps i guarantee it will make any game run a lot smoother and probably without any hitches or choppiness. Just read my posts and check out the links i posted

**martinblank** · 12-24-2007, 12:11 AM

Originally Posted by ghostkilla20

a software thing like acpi doesn't override the system information backbone of the computer, which is the bios.

It actually does in most cases. There are a few motherboards that it won't override, but if you make a wrong setting, have fun opening the computer and clearing the cmos.

**alcom77** · 12-24-2007, 12:29 AM

How come so many people fixed their crashes and stuttering with other fixes, especially those in Ultron's sticky? The only thing I ever did to resolve an IRQ resource issue was move a PCI device one slot down on my Gigabyte mainboard because the AGP card and the PCI slot below it shared the same IRQ. That was years ago!

I would like to hear proof from a few experienced users that this worked for them. This thread should have a huge noob warning on it that there is a danger of bricking your PC. At this point I'm skeptical, but if you can help a few people then maybe your tip will make it into the sticky!

**ghostkilla20** · 12-24-2007, 12:53 AM

Hey i tried Ultron's sticky didn't work, this is just alternative solution that should in return make your gaming a whole lot better it's your choice wether you believe im a noob and everything i have to say to help is bs, but try it and then make your opinions i haven't had one person tell me it hasn't worked all i heard is people assuming it wouldn't work. And if you can't figure it out don't just say it doesn't work becuase you can't figure out IRQ's.

**Enforcer-5** · 12-24-2007, 02:33 AM

Your probably right, but that doesnt mean others can end up and a good situation like you got into.

**martinblank** · 12-24-2007, 03:42 AM

Originally Posted by alcom77

I would like to hear proof from a few experienced users that this worked for them. This thread should have a huge noob warning on it that there is a danger of bricking your PC. At this point I'm skeptical, but if you can help a few people then maybe your tip will make it into the sticky!

I doubt you could brick the PC by setting a wrong IRQ assignment, but 99% of the time, if you change the IRQs in the BIOS and you have ACPI enabled, it will either result in either the setting having no effect, or a conflict with ACPI, or both. Very few BIOSes these days are actually able to override ACPI IRQ assignments, it's a thing of the past.

The worst you could do is having to clear the CMOS by setting the cmos clear jumper and removing the battery.

Having multiple devices on one IRQ is not a problem. The problem lies in the fact that a select few number of devices are incompatible when placed on the same IRQ, and will result in an IRQ conflict. This is what ACPI aims to solve. If you did have an IRQ conflict with ACPI enabled, you would know about it because it would let you know in device manager.

**Enforcer-5** · 12-24-2007, 02:03 PM

So if your smart dont do this unless your like super duper computer smart 0.o

Originally Posted by martinblank

I doubt you could brick the PC by setting a wrong IRQ assignment, but 99% of the time, if you change the IRQs in the BIOS and you have ACPI enabled, it will either result in either the setting having no effect, or a conflict with ACPI, or both. Very few BIOSes these days are actually able to override ACPI IRQ assignments, it's a thing of the past.

The worst you could do is having to clear the CMOS by setting the cmos clear jumper and removing the battery.

Having multiple devices on one IRQ is not a problem. The problem lies in the fact that a select few number of devices are incompatible when placed on the same IRQ, and will result in an IRQ conflict. This is what ACPI aims to solve. If you did have an IRQ conflict with ACPI enabled, you would know about it because it would let you know in device manager.

Tell it like it is brotha o.o