Windows 10: High CPU usage on waking up

Discus and support High CPU usage on waking up in Windows 10 BSOD Crashes and Debugging to solve the problem; Whenever I wake my laptop from sleep, the CPU usage seems to be tremendously high. I noticed that when Edge was launched, it took too long to respond... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by ninja883, Jan 15, 2019.

  1. NINJA883
    ninja883 Win User

    High CPU usage on waking up


    Whenever I wake my laptop from sleep, the CPU usage seems to be tremendously high. I noticed that when Edge was launched, it took too long to respond and task manager was the only way to close it. Is there a way to fix this?

    :)
     
    ninja883, Jan 15, 2019
    #1
  2. BRUCEW268
    BruceW268 Win User

    High CPU usage - system interrupts - when waking from sleep

    After reverting to an earlier Windows version and then updating the drivers again...

    This did not resolve the high CPU usage after waking from sleep, and I notice that it is both System Interrupts (ACPI.sys) and System (ntoskrnl.eve) adding up to about 30% added CPU usage... and constant cooling fan running at moderate to high speed.
     
    BruceW268, Jan 15, 2019
    #2
  3. DEADALOS
    deadalos Win User
    "System" process with high CPU usage

    I have exactly the same issue (high CPU usage) on a brand new HP ProBook 440 G5 (i7-8550U, pre-installed Win 10 Pro).

    I am pretty sure that there is a problem with audio drivers when the computer wakes up from a sleep mode. I first observed that process flow.exe (audio bloatware provided by HP/Conexant) was consuming (after waking up) ~10–15 % CPU. Here's what I did:

    • I have updated Windows to 1709, build 16229.251 and installed all updates --> Nothing has changed.
    • I have updated BIOS to the latest version provided by HP. --> Nothing has changed.
    • I have run Windows troubleshooting and HP Support Assistant checks --> No problems found, nothing has changed
    • I have manually updated Conexant ISST Audio Drivers (via Device Manager -> Update drivers). Windows installed a newer version. -->
      CPU usage by flow.exe has disappeared, but process called System in thread ACPI.sys+0x21cb0 started consuming ~20 % CPU.
    • I have uninstalled all Conexant software&drivers and manually installed generic High Definition Audio Device drivers provided by Microsoft (Driver Date: 21.02.2018). --> ACPI.sys+0x21cb0 still consumes ~20 % CPU.

    Same issues are discussed in these threads on HP site:


    The result is I cannot use sleep mode (as advised by this post:
    https://h30434.www3.hp.com/t5/Business-Notebooks/ProBook-450-with-high-CPU-usage/m-p/6611446/highlight/true#M149605    ).
     
    deadalos, Jan 15, 2019
    #3
  4. JANMCCOY_827
    JanMcCoy_827 Win User

    High CPU usage on waking up

    high cpu usage

    After downloading windows 10, anytime I run any programs, I get high CPU usage. It does not matter whether it is google chrome, task manager, playing games, whatever. Anything seems to spike the CPU usage. I have already run malwarbytes and my antivirus
    programs and find no viruses. Any suggestions? Thanks.
     
    JanMcCoy_827, Jan 15, 2019
    #4
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High CPU usage on waking up

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