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  1. Qt
  2. QTBUG-76813

Backingstore warning messages are shown when starting animations

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Fixed
    • Affects Version/s: 5.12.5, 5.13.0, 5.13.1, 5.13.2, 5.14.0 Beta 1
    • Fix Version/s: 5.12.6, 5.14.0 Beta2
    • Component/s: QPA: Wayland
    • Labels:
    • Commits:
      9f5b96225885f927727a57b6123d8550d6c373bb (qt/qtwayland/5.15) 03e8c91fc28b77c4f027b6c6d582b85878efae41 (qt/qtwayland/5.12.6)

      Description

      In the attached example the following warning message is shown every time the user clicks on the window (running inside pure-qml):

      qt.qpa.wayland.backingstore: Delivering update request through fallback timer, may not be in sync with display

      The code changes the opacity of the "sign" element on every click and uses a behavior to animate it.

      The warning is only shown when the "threaded" render loop is used.

        Attachments

          Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. AUTOSUITE-1021 Lots of qt.qpa.wayland.backingstore warnings

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-82163 [REG: 5.12.3 ->5.12.6] Running animation on i.MX6 starts to get stuttered with CPU load 100%

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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            Activity

              People

              Assignee:
              johanhelsing Johan Helsing
              Reporter:
              gagi Dominik Holland
              Votes:
              1 Vote for this issue
              Watchers:
              7 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:

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