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    Compal IFL 90 - Deferred Procedure Calls (DPCs) in Vista Ultimate 32

    Discussion in 'Other Manufacturers' started by dming, Nov 26, 2007.

  1. dming

    dming Newbie

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    Hey guys,

    I recently purchased a PowerPro J10:15 (IFL 90) system from PowerNoteBooks.com and put Vista Ultimate 32bit on it. I noticed a few days ago that both my cores were loaded to at least 40% on idle!

    After a lot of troubleshooting and digging in, I found out that the cause is from DPCs (deferred procedure calls) in the system idle process. From using process explorer from SysInternals, I found out that the DPCs inside the system idle process is constantly taking around 25-35% of the CPU on both cores.

    I'm wondering if anyone else have had problems similar to mine? I quick search around the forum yielded nothing. At this point I'm almost out of options as to what to do... DPCs seems to be caused by either faulty hardware (which I hope is not true) or bad drivers, I have disabled as many of the devices as I could and this issue still occurs. In fact, DPCs take up the same amount of process in safe mode!

    So if you guys have any advice to go how to go about troubleshooting this, I would really appreciate it! Also, just sharing some similar experiences would help too.

    Thanks!
     
    dming, Nov 26, 2007
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  2. dming

    dming Newbie

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    I just did a fresh install of XP and noticed right away the same behavior (DPC taking up excessive amounts of CPU on both cores)... Which leads me to believe it's a hardware rather than a software issue.

    I did some tracing with RATTV3 and found out that it's the acpi.sys that's causing me trouble.

    So now the question is, how do I disable ACPI in Windows XP or Vista without completely screwing up the OS?

    I also attached some pictures to show the problem in process explorer.
     

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    dming, Nov 27, 2007
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  3. By ToR

    By ToR Notebook Evangelist

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    whay BIOS version are you on?
    My system barely goes above 10% CPU usage when idle...
     
    By ToR, Nov 27, 2007
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  4. dming

    dming Newbie

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    It came with 112, I updated to 113 and no fix :(
     
    dming, Nov 27, 2007
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  5. TC03

    TC03 Notebook Evangelist

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    I used to have this issue with the HEL-80 under XP as well. Just went away a few months ago.
     
    TC03, Nov 27, 2007
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  6. dming

    dming Newbie

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    It just went away? Do you remember what you changed? Did you get any new hardware or swap anything out hardware wise? Or was this definitely a software issue for you?
     
    dming, Nov 27, 2007
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