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  1. Qt
  2. QTBUG-136548

QtWebengine dumps core on Plasma/Wayland applications after upgrade from 6.8 -> 6.9

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Details

    • Bug
    • Resolution: Fixed
    • P1: Critical
    • 6.9.1
    • 6.9.0
    • WebEngine, WebView
    • None

    Description

      ArchLinux: linux technik-b250md3h 6.14.4-arch1-2 #1 SMP PREEMPT_DYNAMIC Tue, 29 Apr 2025 09:23:13 +0000 x86_64 GNU/Linux

      Plasma 6.3.4 / KDE Framework 6.13.0 / Qt 6.9 / Wayland desktop.

      Since update of Qt from 6.8 -> 6.9, all applications using Qt6 WebEngine are dumping core and crashing with the following message in stdout:
      CRITICAL: Failed to query DRM FD for EGL.

      This so far was tested and proven on:

      • qutebrowser v 3.5.0 - with default --qt-wrapper = PyQt6, when switched to PyQt5 the crash does not occur
      • falkon 25.04.0
      • Qt Creator while running an example app: quicknanobrowser

       

      Single display adapter:
      03:00.0 VGA compatible controller: Intel Corporation Battlemage G21 [Arc B580]

      CPU:
      Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz

      Attachments

        1. falkon_core_dump_example.txt
          47 kB
        2. gdb.txt
          34 kB
        3. qutebrowser_PyQt6_coredump.log
          47 kB
        4. eglinfo_wayland.txt
          36 kB
        5. installed_packages.txt
          6 kB

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-136122 KMail Crash

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-136257 QtWebEngine based browser shows nothing with panthor driver

          • 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.
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          Activity

            People

              pvarga Peter Varga
              lewekleonek Leon Lewski
              Votes:
              1 Vote for this issue
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              5 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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