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  1. Qt Creator
  2. QTCREATORBUG-33151

Many crashes on autocomplete with wayland: qt.qpa.wayland: Failed to create popup.

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Details

    • Bug
    • Resolution: Duplicate
    • Not Evaluated
    • None
    • Qt Creator 16.0.1, Qt Creator 16.0.2, Qt Creator 17.0.0, Qt Creator 18.0 (master branch)
    • Analyzer: Clang Tidy & Clazy, Analyzer: CppCheck, Editors
    • None
    • Linux, Fedora 42, Gnome, Wayland session, linux kernel 6.14, linux kernel 6.15, mesa, AMD
    • Linux/Wayland
    • Linux/Wayland

    Description

      All the last builds after 16.0.0 of Qt Creator crash when using QT_QPA_PLATFORM=wayland. It happens when using the autocomplete functionality on some functions, but not on all of them. It was not happening with version 16.0.0.

      Just as an example, it happens with std::to_string(). It crashes continuously with many, many functions. The terminal message after crash is the following:

      qt.qpa.wayland: Failed to create popup. Ensure popup  QWidgetWindow(0xe6fd760, name="QWidgetClassWindow") has a transientParent set.
The Wayland connection experienced a fatal error: Protocol error

      The system log captured from gnome-log is the following:

      gnome-shell: WL: error in client communication (pid 14618)

      The system is: Fedora 42, Gnome, Wayland session, kernels 6.14 & 6.15, mesa 25.0.7 AMD drivers. I attach the output of the command qtdiag for more details. Is there any other detail/log that I can provide? It's a very annoying issue. Luckily, it doesn't happen with the platform xcb.
      qtdiag.txt

      Attachments

        1. qtdiag.txt
          12 kB
          Jordi Frias

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-137702 [REG Qt 6.9.0 -> 6.9.1] Crash when completing code

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; Flaky tests; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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              kandeler Christian Kandeler
              txordi Jordi Frias
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              Dates

                Created:
                Updated:
                Resolved:

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