Win2k Pro IRQ Conflicts/Sharing

kleb wrote on 7/21/2002, 4:14 PM
Audio skips randomly during playback with intensive video edits.

Here's my settup..
AMD 751 Processor
ASUS K7M Slot A Motherboard, VIA KX133 Chipset
256 MB RAM
Western Digital WD153BA (for OS/APPS)
IBM DNES-309170W SCSI (recording/playback)
Adaptec AHA-2940U2W - Ultra2 SCSI (PCI Interface)
MS Windows 2000 Profesional, SP2 Build 2195 (dual boot w/ Windows 98 SE)
ATI Technologies Inc. RAGE 128 GL AGP (Display adapter)
M-Audio DiO 2448
Latest Acid, Vegas and Forge XP Studio

My ATI Technologies Inc. RAGE 128 GL AGP Display adapter insists on taking the same IRQ 11 as my M Audio DiO 2448 Sound card. This is likely causing the problems in Vegas.

I've resolved my ACID and Vegas Win2k Pro timeout error by changing ACPI to Standard-PC. Anyone know how to resolve this?

Thanks,

K Leblanc

Comments

jboy wrote on 7/21/2002, 4:42 PM
You mean the audio stutters on playback from the timeline ? I think you can increase your buffer storage to correct for this. Also, ACPI is supposed to sort out all that IRQ stuff, and basically everything winds up on IRQ 11. I've read quite a few articles on this subject, trying to diagnose a completely different problem, and the concensus seemed to be that it was a bad idea to disable ACPI.I dont believe yours is disabled.I know there's a setting somewhere in the configuration setup that allows you to choose "Standard PC" over ACPI mode, but I believe, even if selected, it reverts to ACPI when you restart your computer. You can remove ACPI, but only during an OS install, so if you didn't do it this way, it probably didn't take. Also you might post your processor speed in your profile, try a little more RAM, cant hurt. Do a search on ACPI on this forum and you'll probably be able to read many long threads on this topic..
kleb wrote on 7/21/2002, 9:26 PM
jboy,

Thanks for the assist. Apparently IRQ optimization is critical. I've opted to try Standard-PC over ACPI and have found much improvement. (ACID works!) But like you mentioned, my IRQ settings remain auto-configured. I need to know how to manage IRQs better in Win2k Pro...

Current Standard-PC IRQ configuration:

IRQ 11 - ATI Technologies Inc. RAGE 128 GL AGP Display adapter

IRQ 11 - M Audio DiO 2448

IRQ 9 - VIA USB Universal Host Controller

IRQ 9 - VIA USB Universal Host Controller (again)

IRQ 9 - Intel(R) PRO/100B PCI Adapter (TX) #2

(Processor speed: AMD 751 Processor at 705 MHz)
jboy wrote on 7/21/2002, 10:38 PM
Your processor's a little on the slow side. Acid works with W2Kpro fine on my machine, with ACPI enabled. From what I've read on this subject,I suspect your problem is unrelated to ACPI. I wish I could help you more, but am not sure you're going in the right direction. You still haven't described the exact nature of your problem, but if its as I infered in my first post, then the problem could be explained by your processor and ram limitations. When you render out your creations, does the rendered file skip on playback then ? Can you copy your work to tape, and does it skip when you play the tape back. Vegas is designed to drop pieces of information during the editing stage, if your hardware requires more headroom. Since its a software NLE, the faster the machine it runs on, the better it will run.This means that if you experience occasional loss of smoothness , both audio and video, on your editing timeline on a slow machine, dont be surprised and dont worry. If your rendered footage is flawed, then you have a problem.Also, you may be experiencing some sort of driver conflict with one or more, of your other pieces of hardware. What are the capacities and rpm speeds of your hard drives ? Do you have the latest drivers installed for all your hardware ? Whenever some piece of software doesn't work, people seem to be inclined to blame the software, while in my experience, it's almost always, 9 times out of 10, a configuration or driver problem.
Cheesehole wrote on 7/22/2002, 12:14 AM
>>> I need to know how to manage IRQs better in Win2k Pro...

I've found it works best to configure IRQ's in BIOS. just make sure you set Plug N Play OS to 'NO' (should 'no' by default). and then you should be able to assign IRQs to each slot. many Motherboards share IRQ's between the AGP and the PCI slot right next to it and also may share a couple other slots and there isn't anything you can do about that except try to put 'friendly' things together. this usually takes experimentation and varies greatly depending on what hardware is being used.

using this method you can prevent two cards from sharing the same IRQ. for example, you could put your Firewire card in slot 2 and your sound card in slot 3, and then assign IRQ 5 to slot 3 (sound) and assign IRQ 4 to slot 2(Firewire).

for the most part, most new hardware works well sharing IRQ's but sometimes you just gotta give 'em their own.
Former user wrote on 7/22/2002, 1:37 PM
kleblanc,

I agree with Cheese - if your cards are not behaving on their own, you can either:

1. Switch cards around in different slots and see what happens
2. Force the IRQ in the BIOS. Sometimes this is only way to get things separated.

Cheers,

Cuzin B
kleb wrote on 7/22/2002, 1:54 PM
Cheese & CuzinB,

Thanks for the assist. I rearranged my PCI expansion cards according to my BIOS and Motherboard's documentation. I found 3 unshared slots and decided to use these for Audio, Firewire, and the UltraSCSI adapter. The other 2 PCI slots are shared with the AGP slot. I'll set my Ethernet adapter here since I use it sparingly. Any glaring conflicts here?

jboy,

Thanks for the tips. I know my system's not up to speed for deluxe video editing. I was hoping that it is fast enough to do photo montage work with panning and crossfade transitions, etc. I want to render to digital video, MPEG and/or AVI.

Please tell me more about the buffer settings in Vegas you referrenced.

Thanks,

K Leblanc
jboy wrote on 7/22/2002, 10:57 PM
Go to Options>Preferences>clk on the Audio tab, and increase Buffer settings, (first item in list).