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  1. Qt
  2. QTBUG-88688

Qt application fails to start on Debian 10 Buster because libqxcb.so requires missing libxcb-util.so.1

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.15.3, 6.0.1, 6.1
    • 5.15.2
    • QPA: X11/XCB
    • None
    • Debian 10 (buster) amd64
      QtCreator 4.13.2
      Qt 5.15.2 from Online Installer
      libxcb-util0 0.3.8-3+b2
    • Linux/X11
    • 61b07d75f96d4dfb07b485b2a9bd7aed099df987(5.15) c967ed95a720e210dff398624b97810703815874(6.0) 92a57e0b016f811876ec1d62328ca8edfe452a3a(dev) 61b07d75f96d4dfb07b485b2a9bd7aed099df987 (qt/tqtc-qtbase/5.15)

    Description

      This is output with QT_DEBUG_PLUGINS:

      QFactoryLoader::QFactoryLoader() checking directory path "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqeglfs.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqeglfs.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "archreq": 0,
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqlinuxfb.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqlinuxfb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "archreq": 0,
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqminimal.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqminimalegl.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqminimalegl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "archreq": 0,
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqoffscreen.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqvnc.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqvnc.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "archreq": 0,
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-egl.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-egl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-egl"
        ]
    },
    "archreq": 0,
    "className": "QWaylandEglPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("wayland-egl")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-generic.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-generic.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland"
        ]
    },
    "archreq": 0,
    "className": "QWaylandIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("wayland")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-xcomposite-egl"
        ]
    },
    "archreq": 0,
    "className": "QWaylandXCompositeEglPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("wayland-xcomposite-egl")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-xcomposite-glx"
        ]
    },
    "archreq": 0,
    "className": "QWaylandXCompositeGlxPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("wayland-xcomposite-glx")
QFactoryLoader::QFactoryLoader() looking at "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqxcb.so"
Found metadata in lib /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 331520
}
Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/tmp/cpp/build-qt5152-Desktop_Qt_5_15_2_GCC_64bit-Debug/platforms" ...
Cannot load library /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqxcb.so: (libxcb-util.so.1: cannot open shared object file: No such file or directory)
QLibraryPrivate::loadPlugin failed on "/home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqxcb.so: (libxcb-util.so.1: cannot open shared object file: No such file or directory)"
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

      Key point:

      "Cannot load library /home/vincas/Qt/5.15.2/gcc_64/plugins/platforms/libqxcb.so: (libxcb-util.so.1: cannot open shared object file: No such file or directory)"

      There's no libxcb-util.so.1 on Debian Buster. There's .so.0 though:

      $ apt-file search libxcb-util.so
libxcb-util0: /usr/lib/x86_64-linux-gnu/libxcb-util.so.0
libxcb-util0: /usr/lib/x86_64-linux-gnu/libxcb-util.so.0.0.0
libxcb-util0-dev: /usr/lib/x86_64-linux-gnu/libxcb-util.so

      I hope Debian 10 is not considered "too old", I mean, it's current Debian version.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. PYSIDE-1473 5.15.2 is incompatible to current debian stable

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-88859 Qt compile doesn't produce xcb plugins under Debian Buster

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-88727 Reinstall qt 6 after update fails - reinstall results the same; Qt will not run

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84749 QT applications fail to run if xcb_xinerama (or other xcb libraries) is not installed

          • 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; 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
          replaces

          Bug - A problem which impairs or prevents the functions of the product. QTCREATORBUG-24978 qtcreator 4.13.3 fails to run on ChromeOS Crostini - load error

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-86287 Static 5.15.0 compile results in "undefined reference to xcb_aux_create_gc"

          • P4: Low - Would be nice to fix, but it's not very important.
          • Open

          Activity

            People

              liaqi Liang Qi
              talkless Vincas Dargis
              Votes:
              8 Vote for this issue
              Watchers:
              32 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: