Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-120454

[Regr:6.6.0->6.6.1] PyQt6 app reports The cached device pixel ratio value was stale on window expose

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P2: Important P2: Important
    • None
    • 6.6.1
    • GUI: Window management
    • None
    • Linux/Wayland

      SUMMARY

      PyQt6 programs report "The cached device pixel ratio value was stale on window expose. Please file a QTBUG which explains how to reproduce." when exiting.

      The same code running under Fedora 39 KDE with Qt 6.6.0 does not show the error.

      STEPS TO REPRODUCE
      1. Run the attached qtbug.py script from a terminal.
      2. Click on [X] to close the window
      3. Error message shown in terminal.

      OBSERVED RESULT

      $ py3 qtbug.py
      The cached device pixel ratio value was stale on window expose. Please file a QTBUG which explains how to reproduce.

      EXPECTED RESULT

      No error printed.

      SOFTWARE/OS VERSIONS
      Windows:
      macOS:
      Linux/KDE Plasma: Fedora rawhide: KDE plasma 6.0 beta 2
      (available in About System)
      KDE Plasma Version: 5.91.0
      KDE Frameworks Version: 5.247.0
      Qt Version: 6.6.1
      PyQt6 Version: python3-pyqt6-6.6.1-1.fc40.x86_64
      ADDITIONAL INFORMATION

        1. qtbug.py
          0.8 kB
        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

            sorvig Morten Sørvig
            barryscott Barry Scott
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

              Created:
              Updated:

                There are no open Gerrit changes