Windows 10: What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems...

Discus and support What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... in Windows 10 Ask Insider to solve the problem; [ATTACH] submitted by /u/FloatingMilkshake [link] [comments]... Discussion in 'Windows 10 Ask Insider' started by /u/FloatingMilkshake, Apr 4, 2020.

  1. /U/FLOATINGMILKSHAKE
    /u/FloatingMilkshake Win User

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems...

    /u/FloatingMilkshake, Apr 4, 2020
    #1
  2. LITTLE
    little Win User

    Interesting CPU usage pattern caused by atikmdag.sys


    I am using Acer V5-122P and running Windows 10 Build 1607 64-bit with all the latest updates.

    Recently, I have noticed abnormal CPU usage by "System" (regardless of whether the PC is idle). This does not happen in the past, but I'm unable to tell when exactly it started.

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... [​IMG]


    The CPU usage graph is very interesting.

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... [​IMG]


    Perhaps a bit less interesting if the 4 cores are displayed separately.

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... [​IMG]


    I have downloaded Process Explorer from Microsoft. It turns out that it is the atikmdag.sys that is causing the abnormal CPU usage.

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... [​IMG]


    Naturally I uninstalled the AMD display driver using the Display Driver Uninstaller. Then I tried several versions of the AMD display driver (including a pre-Crimson Catalyst driver and the driver provided by Windows Update). Unfortunately, all versions of the AMD display driver I have tried have the same problem.

    It is worth noting that the abnormal CPU usage does NOT occur if I use the generic display driver built into Windows. However, the generic display driver is not suitable for long-term use because I can't even adjust screen brightness with that driver.

    I am suspecting that the problem is caused by the Build 1607 update, but I'm too late to roll back to Build 1511 and I'm not prepared to re-install Windows at the moment.

    It would be great if you could kindly provide me with insights into the problem. Thanks!
     
    little, Apr 4, 2020
    #2
  3. LITTLE
    little Win User
    Interesting CPU usage pattern caused by atikmdag.sys


    Funny observation: When I use the old 15.7.1 driver released on 29/7/2015 (supposed to be the last driver that supports A6-1650), the CPU usage graph still shows a similar pattern, but the peaks are lower.

    Using 15.7.1 driver:

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... [​IMG]


    Using the driver provided by Windows Update:

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems... [​IMG]
     
    little, Apr 4, 2020
    #3
  4. FNETF
    fnetf Win User

    What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems...

    Interesting CPU usage pattern caused by atikmdag.sys


    Hy Little,

    I am the owner of a Acer V5 122P and been a long time very happy with windows 10. Exactly like you i got Problems with high cpu usage caused by atikmdag.sys. Most Time my Lappy is freezing and unworkable. So my question is if you found a solution for the Problem or please give me the link to the last working driver. Thanks very much, Frank from Germany

     
    fnetf, Apr 4, 2020
    #4
Thema:

What could be causing my CPU usage to jump up and down in a pattern when idle? Usage seems...

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