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  1. Qt
  2. QTBUG-66600

Constant CPU Usage when idle

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Details

    • Bug
    • Resolution: Out of scope
    • P2: Important
    • None
    • 5.10.1
    • None

    Description

      Hello all,

      Since Creator 4.4.1 I observe a constant CPU usage without opening any project, just launching it.

       

      On my 8 CPU computer it consumes 6% CPU (global) / 48% of one core just doing nothing ! 

      On a laptop it's a big issue because it's draining the battery faster than usual.

      As described in the "environnement" I'm using a laptop with an external screen but the issue is still there when the external screen is unplugged (ie. the USB3 dock is unplugged).

       

      Comments below contains diag information.

      I just discover the issue disapear if I force Nvidia board to be used for this program. I guess it's still an issue for battery drain because this graphics processor may drain more than the IGP.

       

      Attachments

        1. qtdiag.txt
          6 kB
          walter koenig

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            lagocs Laszlo Agocs
            walter.k. walter koenig
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            Dates

              Created:
              Updated:
              Resolved: