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Changing video IRQ?

Apocalypse23

Apocalypse23

Golden Member
Is it possible? I was having some trouble with my fx5900 from BFG and they said I should have an IRQ lower than 15 for it, prefreably an IRQ of 11. I don't know if it's possible to change it, and if it actually even matters. I have windows xp pro, and an abit nfs-7 2.0 mobo. I've sent them an email asking about it as well, just waiting for a response. Thanks.

 
How did you do this? They tried giving me the same explanation as to why mine keeps locking up.
 
Well I went to device manager, and under COMPUTER I had something about it being ACPI...So i right clicked on it, properties, went to update driver, install from list or specific location and selected "STANDARD PC". Then I rebooted my comp, went into the BIOS and changed the IRQ setting for my vid card there manually. Booted into Windows, but my USB mouse wouldn't work and I heard a lot of disk activity. After a few minutes though it started to work, but I had to reinstall it's drivers, I also lost some modifications I made for the video card (filtering, v-sync etc), so I just redid that, and here i am. I hear this process CAN mess up your comp so you might wanna back up your system before you try it out.

Oh yeah, the weird thing is, under computer I now have TWO 'standard PC' s but im scared to delete one of them so i'm letting them be.

BTW, it did nothing for me, LOL. I'm still facing the same weird atfiacts in UNREAL 2004 demo , BUT, I managed to fix them by putting my antialiasing filtering up to 4X . I don't seem to get them anymore, but it's effecting my FPS =/ ...



 
That got my IRQ down to 7 but now it can't find any resources for the IDE controller. Apocalypse, could you please check your Device Manager and see if there's any yellow balloons by anything?
 
Originally posted by: MonkeyDriveExpress
That got my IRQ down to 7 but now it can't find any resources for the IDE controller. Apocalypse, could you please check your Device Manager and see if there's any yellow balloons by anything?
Click to expand...

I just did, no yellow balloons here. Everything seems to be working fine for me. I manually changed the IRQ for my vid card to 11 (nothing had occupied that IRQ before either) and everything seems fine. I checked my IDE controllers as well, no problem there. Sorry man.

 
Originally posted by: MonkeyDriveExpress
I just reinstalled XP and the IRQ is 19 now, this is ridiculous...
Click to expand...

LOL, yeah that was what XP assigned to my vid card too. I looked up on it a lil, and you could try disabling ACPI from the BIOS (I don't know where it is exactly but i've seen it), and then reboot. Chances are windows won't boot if it's already installed WITH ACPI. So try formatting and installing win xp after you switched ACPI off from the BIOS. It's a pain I know. Maby someone else here with more knowledge on this can help....?

 
Originally posted by: Apocalypse23
Originally posted by: MonkeyDriveExpress
I just reinstalled XP and the IRQ is 19 now, this is ridiculous...
Click to expand...

LOL, yeah that was what XP assigned to my vid card too. I looked up on it a lil, and you could try disabling ACPI from the BIOS (I don't know where it is exactly but i've seen it), and then reboot. Chances are windows won't boot if it's already installed WITH ACPI. So try formatting and installing win xp after you switched ACPI off from the BIOS. It's a pain I know. Maby someone else here with more knowledge on this can help....?
Click to expand...
I got it to 7, switched from ACPI PC to Advanced Configuration and Power Interface (ACPI) PC 😕. Don't ask me, but it's working now. Off to play some UT2004...
 
You previously had fine and fast APIC interrupt mode with more than 16 interrupts, and voluntarily reverted to "Standard PC" with no power management and just the 15 legacy interrupts? Stupid move.

Guys, whatever problem you have out there, it's nothing to do with IRQ assignments. Just leave that alone, and go track down the real problem. "IRQ sharing problems" are nothing more than a sad excuse from helpdesk staff everywhere.
 
Originally posted by: Peter
You previously had fine and fast APIC interrupt mode with more than 16 interrupts, and voluntarily reverted to "Standard PC" with no power management and just the 15 legacy interrupts? Stupid move.

Guys, whatever problem you have out there, it's nothing to do with IRQ assignments. Just leave that alone, and go track down the real problem. "IRQ sharing problems" are nothing more than a sad excuse from helpdesk staff everywhere.
Click to expand...
I got my setup working, and I don't use power management anyways so that doesn't really matter to me. Folding@Home is running 24/7 and I just turn off my monitor and speakers when I walk away from the computer, plus I still have ACPI working anyways.
 
I said APIC not ACPI. The former is what gets you the performance increase of modern interrupt controllers, plus more than 16 IRQ lines. If you're happy with the crippled system rather than bothering to track down the actual problem, so be it.
 
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