Skip to content

杉本大地

← Adobe Illustrator

My feedback

1 result found

  1. CEPHtmlEngine keeps both macOS and Windows awake

    11 votes

    We're glad you're here

    Please sign in to leave feedback
    Signed in as (Sign out)
    Close
    Close

    We’ll send you updates on this idea

    14 comments  ·  Illustrator (Desktop) Bugs » Performance  ·  Admin →
    How important is this to you?

    We're glad you're here

    Please sign in to leave feedback
    Signed in as (Sign out)
    Close
    Close
    An error occurred while saving the comment
    杉本大地 commented  · 

    Illustrator 2026 30.3.0 on Windows prevents the display from sleeping while Illustrator is running.

    This does not appear as a normal DISPLAY power request:
    powercfg /requests shows DISPLAY: None, except when unrelated Tobii presence detection is running.

    I tested the following:
    - Disabled "Show The Home Screen When No Documents Are Open"
    - Disabled "GPU Performance"
    - Restarted Illustrator
    - Confirmed Illustrator still launches CEPHtmlEngine for com.adobe.illustrator.OnBoarding
    - Left Illustrator.exe running, but terminated only the Illustrator-owned CEPHtmlEngine processes
    - After doing that, the display slept normally after 5 minutes

    The active process command line included:
    com.adobe.illustrator.OnBoarding
    CEPHtmlEngine12-ILST-30.3.0-com.adobe.illustrator.OnBoarding.log

    This suggests com.adobe.illustrator.OnBoarding / CEPHtmlEngine is preventing Windows display sleep without registering as a DISPLAY request in powercfg.

    杉本大地 supported this idea  ·