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Thread: ATI Radeon 7500 VE PCI & Audigy 2 ZS issues

  1. #1
    Maximum Bitrate jzgt's Avatar
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    Question ATI Radeon 7500 VE PCI & Audigy 2 ZS issues

    Hey guys...
    I was wondering if someone here could possibly help me.
    I have a Compaq Presario 5012 1 GHz that was given to me. I decided to install a sound card and video card and use it as an HTPC, etc.
    I bought the video card (ATI Radeon 7500 VE PCI <AIW>) and sound card (Creative Audigy2 ZS) to upgrade the box. I installed a fresh XP (I have since tried W98, and XP again trying to track this down) and installed the sound card. Everything was fine. I disabled the OB video and removed all the video drivers and related from the drive and the registry (as per Compaq's instructions). Installed the ATI card and related software. Fine - they both work great. TV tuner functions are perfect, Medal of Honor plays perfectly, etc. I can record TV and it works fine. The problem comes into play when there's some decoding to be done. If you want to watch a DVD or a Divx or play a game where there's an intro that has a combines sound and video, the computer locks up and the speakers play the continuos note of the last bit of decoded sound. Sometimes, if you wait 30 seconds or so, it will play a little bit more and then lock up again - for good. I know that both cards are trying to do the same thing and causing the conflict. If I disable the sound card, the Divx and DVD plays back fine - minus the sound, of course. I have tried to disable all the WDMs in device manager related to the ATI card (under Sound, multimedia, game controllers) but that did not help.

    Has anyone else had an issue like this and solved it? I have done a search here and on google and haven't found anything. I have also e-mailed Creative and ATI.

    Any help would be greatly appreciated! Sorry it's such a long message!

    - Jeff

  2. #2
    Maximum Bitrate tom2112's Avatar
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    I'm just gonna throw this out here since no one else has answered you.

    I'm not sure I understand the problem, but it sounds like those two devices are fighting over an IRQ. Older systems "said" they shared IRQ's on the PCI bus. This was real popular in integrated systems like the Presarios. They work fine until you add a card that wants a certain IRQ.

    Anyway, here's what to do about it:
    View your current IRQ assignments - I can't remember where you view those in WinXP. In Win9x you view them from the Device Manager. Write them down. Pay special attention to what IRQ your video and sound devices are using. If they're sharing an IRQ (with each other or with some other deivce), there's your problem.

    To fix it, you got to get that card assigned to a different (and hopefully available) IRQ.

    Let's say for example that the video card is on IRQ11, which is shared by the audio card. Pop your case and check which slot the video card is in. Then go into your BIOS and assign that PCI slot a specific IRQ - other than 11. You have to assign one that is available - not one that is shared. Be careful as you can easily mistake which PCI slot is which and end up giving the wrong device a new IRQ.

    Hope that helps you out.
    Tom
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  3. #3
    Maximum Bitrate jzgt's Avatar
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    Quote Originally Posted by tom2112
    I'm just gonna throw this out here since no one else has answered you.

    I'm not sure I understand the problem, but it sounds like those two devices are fighting over an IRQ. Older systems "said" they shared IRQ's on the PCI bus. This was real popular in integrated systems like the Presarios. They work fine until you add a card that wants a certain IRQ.

    Anyway, here's what to do about it:
    View your current IRQ assignments - I can't remember where you view those in WinXP. In Win9x you view them from the Device Manager. Write them down. Pay special attention to what IRQ your video and sound devices are using. If they're sharing an IRQ (with each other or with some other deivce), there's your problem.

    To fix it, you got to get that card assigned to a different (and hopefully available) IRQ.

    Let's say for example that the video card is on IRQ11, which is shared by the audio card. Pop your case and check which slot the video card is in. Then go into your BIOS and assign that PCI slot a specific IRQ - other than 11. You have to assign one that is available - not one that is shared. Be careful as you can easily mistake which PCI slot is which and end up giving the wrong device a new IRQ.

    Hope that helps you out.
    Tom
    Thanks Tom!
    I will try that out tonight since ideas from ATI (standard form letter - thanks, guys) and a personal response from Creative did not help, I am running out of ideas. Yeah, I hate all crap built into MBs that you CAN'T DISABLE WITH A JUMPER!

    - Jeff

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