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qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.

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  • hskoglundH hskoglund

    Hmm, so apt gave you a piecemeal version of Qt, however enough stuff to error out AppImage.

    That older/faulty libQt5XcbQpa.so.5 should be in your /usr/lib/x86_64-linux-gnu anyways, try this in Terminal:

    strings /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 | grep Qt | more
    

    In that list should be some version markers, like Qt_5_PRIVATE_API, Qt_5 and Qt_5.9 or something similar...

    Edit: just realized, there's an easier way to establish the version of that apt-flavored partial Qt installation: just list libQt5XcbQpa in Terminal, like this:

    ls -l /usr/lib/x86_64-linux-gnu/libQt5Xcb*
    

    this should show what version apt gave you...

    S Offline
    S Offline
    singhravi
    wrote on last edited by
    #38

    @hskoglund
    Yes, libQt5XcbQpa.so.5 has Qt_5_PRIVATE_API, Qt_5 and Qt_5.9 in it. Please find the whole output below.

    _ZN14QXcbConnection19getQtSelectionOwnerEv
    _ZN9QtPrivate20QStringList_containsEPK11QStringListRK7QStringN2Qt15CaseSensitivityE
    _ZN7QObject10startTimerEiN2Qt9TimerTypeE
    _ZN7QObject7connectEPKS_PKcS1_S3_N2Qt14ConnectionTypeE
    _ZN11QMetaObject12invokeMethodEP7QObjectPKcN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS7_S7_S7_S7_S7_S7_S7_S7_S7_
    _ZN10QByteArrayC1EiN2Qt14InitializationE
    _ZN16QCoreApplication13testAttributeEN2Qt20ApplicationAttributeE
    _ZNK7QString11lastIndexOfE5QChariN2Qt15CaseSensitivityE
    _ZN16QCoreApplication12setAttributeEN2Qt20ApplicationAttributeEb
    _ZN7QStringC1EiN2Qt14InitializationE
    _ZNK20QPlatformIntegration18defaultWindowStateE6QFlagsIN2Qt10WindowTypeEE
    _ZNK11QMetaMethod6invokeEP7QObjectN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS5_S5_S5_S5_S5_S5_S5_S5_S5_
    _ZN9QKeyEventC1EN6QEvent4TypeEi6QFlagsIN2Qt16KeyboardModifierEEjjjRK7QStringbt
    _ZN22QWindowSystemInterface22handleContextMenuEventEP7QWindowbRK6QPointS4_6QFlagsIN2Qt16KeyboardModifierEE
    _ZN22QWindowSystemInterface22handleExtendedKeyEventEP7QWindowmN6QEvent4TypeEi6QFlagsIN2Qt16KeyboardModifierEEjjjRK7QStringbtb
    _ZNK7QString10startsWithE13QLatin1StringN2Qt15CaseSensitivityE
    _ZNK7QString7indexOfE13QLatin1StringiN2Qt15CaseSensitivityE
    _ZNK7QString8splitRefE5QCharNS_13SplitBehaviorEN2Qt15CaseSensitivityE
    _ZN10QBasicDrag12updateCursorEN2Qt10DropActionE
    _ZN15QtSharedPointer20ExternalRefCountData9getAndRefEPK7QObject
    _ZN22QWindowSystemInterface10handleDragEP7QWindowPK9QMimeDataRK6QPoint6QFlagsIN2Qt10DropActionEE
    _ZNK23QPlatformDragQtResponse10answerRectEv
    _ZNK23QPlatformDropQtResponse10isAcceptedEv
    _ZNK23QPlatformDropQtResponse14acceptedActionEv
    _ZN22QWindowSystemInterface10handleDropEP7QWindowPK9QMimeDataRK6QPoint6QFlagsIN2Qt10DropActionEE
    _ZNK13QPlatformDrag13defaultActionE6QFlagsIN2Qt10DropActionEES0_INS1_16KeyboardModifierEE
    _ZN22QWindowSystemInterface29handleScreenOrientationChangeEP7QScreenN2Qt17ScreenOrientationE
    _ZN7QObject18staticQtMetaObjectE
    _ZN15QPlatformScreen24setOrientationUpdateMaskE6QFlagsIN2Qt17ScreenOrientationEE
    _ZN22QWindowSystemInterface21handleWindowActivatedINS_15DefaultDeliveryEEEvP7QWindowN2Qt11FocusReasonE
    _ZN10QXcbWindow19setMotifWindowFlagsE6QFlagsIN2Qt10WindowTypeEE
    _ZN10QXcbWindow16handleMouseEventEjRK6QPointS2_6QFlagsIN2Qt16KeyboardModifierEENS4_16MouseEventSourceE
    _ZN22QWindowSystemInterface16handleMouseEventINS_15DefaultDeliveryEEEvP7QWindowmRK7QPointFS6_6QFlagsIN2Qt11MouseButtonEES7_INS8_16KeyboardModifierEENS8_16MouseEventSourceE
    _ZN10QXcbWindow24handleButtonReleaseEventEiiiii6QFlagsIN2Qt16KeyboardModifierEEjNS1_16MouseEventSourceE
    _ZN10QXcbWindow23handleMotionNotifyEventEiiii6QFlagsIN2Qt16KeyboardModifierEEjNS1_16MouseEventSourceE
    _ZN10QXcbWindow22handleButtonPressEventEiiiii6QFlagsIN2Qt16KeyboardModifierEEjNS1_16MouseEventSourceE
    _ZN22QWindowSystemInterface16handleWheelEventEP7QWindowmRK7QPointFS4_iN2Qt11OrientationE6QFlagsINS5_16KeyboardModifierEE
    _ZN10QXcbWindow18handleXIMouseEventEP14xcb_ge_event_tN2Qt16MouseEventSourceE
    _ZN14QXcbConnection17xiToQtMouseButtonEj
    _ZN10QXcbWindow24setNetWmStateWindowFlagsE6QFlagsIN2Qt10WindowTypeEE
    _ZN10QXcbWindow14setWindowStateEN2Qt11WindowStateE
    _ZThn16_N10QXcbWindow14setWindowStateEN2Qt11WindowStateE
    _ZN10QXcbWindow19doStartSystemResizeERK6QPointN2Qt6CornerE
    _ZN10QXcbWindow17startSystemResizeERK6QPointN2Qt6CornerE
    _ZN14QXcbConnection30startSystemResizeForTouchBeginEjRK6QPointN2Qt6CornerE
    _ZThn16_N10QXcbWindow17startSystemResizeERK6QPointN2Qt6CornerE
    _ZN10QXcbWindow15setWmWindowTypeE6QFlagsIN19QXcbWindowFunctions12WmWindowTypeEES0_IN2Qt10WindowTypeEE
    _ZN22QWindowSystemInterface24handleWindowStateChangedINS_15DefaultDeliveryEEEvP7QWindowN2Qt11WindowStateEi
    _ZN10QXcbWindow14setWindowFlagsE6QFlagsIN2Qt10WindowTypeEE
    _ZThn16_N10QXcbWindow14setWindowFlagsE6QFlagsIN2Qt10WindowTypeEE
    _ZN6QImage23convertToFormat_inplaceENS_6FormatE6QFlagsIN2Qt19ImageConversionFlagEE
    _ZNK6QImage22convertToFormat_helperENS_6FormatE6QFlagsIN2Qt19ImageConversionFlagEE
    _ZN15QPlatformWindow30handleContentOrientationChangeEN2Qt17ScreenOrientationE
    _ZN6QColorC1EN2Qt11GlobalColorE
    _ZN22QGuiApplicationPrivate15getPixmapCursorEN2Qt11CursorShapeE
    _ZNK6QImage15createAlphaMaskE6QFlagsIN2Qt19ImageConversionFlagEE
    _ZN7QPixmap16fromImageInPlaceER6QImage6QFlagsIN2Qt19ImageConversionFlagEE
    _ZN22QWindowSystemInterface16handleWheelEventEP7QWindowmRK7QPointFS4_6QPointS5_6QFlagsIN2Qt16KeyboardModifierEENS7_11ScrollPhaseENS7_16MouseEventSourceEb
    _ZN22QWindowSystemInterface17handleTabletEventEP7QWindowmRK7QPointFS4_ii6QFlagsIN2Qt11MouseButtonEEdiiddixS5_INS6_16KeyboardModifierEE
    _ZN16QLoggingCategory10setEnabledE9QtMsgTypeb
    _ZN22QWindowSystemInterface16handleTouchEventINS_15DefaultDeliveryEEEvP7QWindowmP12QTouchDeviceRK5QListINS_10TouchPointEE6QFlagsIN2Qt16KeyboardModifierEE
    _ZNK7QString7compareERKS_N2Qt15CaseSensitivityE
    _ZN14QFactoryLoaderC1EPKcRK7QStringN2Qt15CaseSensitivityE
    _ZN9QtPrivate16QStringList_joinEPK11QStringListPK5QChari
    _ZN6QBrushC1EN2Qt11GlobalColorENS0_10BrushStyleE
    _ZN6QBrushC1ERK6QColorN2Qt10BrushStyleE
    _ZN9QMetaType25registerConverterFunctionEPKN9QtPrivate25AbstractConverterFunctionEii
    _ZN9QtPrivate28QStringList_removeDuplicatesEP11QStringList
    _ZNK7QString5splitE5QCharNS_13SplitBehaviorEN2Qt15CaseSensitivityE
    _ZN7QObject11connectImplEPKS_PPvS1_S3_PN9QtPrivate15QSlotObjectBaseEN2Qt14ConnectionTypeEPKiPK11QMetaObject
    _ZNK7QString8endsWithE13QLatin1StringN2Qt15CaseSensitivityE
    _ZN6QImage4fillEN2Qt11GlobalColorE
    _ZNK7QString7indexOfE5QChariN2Qt15CaseSensitivityE
    _ZN20QEventDispatcherGlib13registerTimerEiiN2Qt9TimerTypeEP7QObject
    _ZN20QEventDispatcherUNIX13registerTimerEiiN2Qt9TimerTypeEP7QObject
    _ZNK6QImage11transformedERK10QTransformN2Qt18TransformationModeE
    libQt5Gui.so.5
    libQt5DBus.so.5
    libQt5Core.so.5
    libQt5XcbQpa.so.5
    Qt_5_PRIVATE_API
    Qt_5
    Qt_5.9
    Qt: XKEYBOARD extension not present on the X server.
    Qt: Failed to initialize XKB extension
    Qt: Unsupported XKB version (We want %d %d, but X server has %d %d)
    Qt: failed to select notify events from xcb-xkb
    Qt: Couldn't interpret the _XKB_RULES_NAMES property
    Qt: Failed to compile US keymap, shortcut handling with non-Latin keyboard layouts may not be fully functional!
    Qt: failed to retrieve the virtual modifier names from XKB
    Qt: failed to retrieve the virtual modifier map from XKB
    Qt: failed to get modifier mapping
    Qt: failed to retrieve the keyboard mapping from XKB
    Qt: Failed to create XKB context!
    Qt: Could not determine keyboard configuration data from X server, will use hard-coded keymap configuration.
    Qt: Failed to compile a keymap!
    Qt: Failed to create xkb state!
    Qt: couldn't get core keyboard device info
    XInput version %d.%d is available and Qt supports 2.2 or greater
    Qt: Session management error: %s
    org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5
    QtMetaTypePrivate::QSequentialIterableImpl
          <annotation value="QDBusMenuLayoutItem" name="org.qtproject.QtDBus.QtTypeName.Out1"/>
          <annotation value="QList&lt;int&gt;" name="org.qtproject.QtDBus.QtTypeName.In0"/>
          <annotation value="QDBusMenuItemList" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QList&lt;QDBusMenuEvent&gt;" name="org.qtproject.QtDBus.QtTypeName.In0"/>
          <annotation value="QList&lt;int&gt;" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QList&lt;int&gt;" name="org.qtproject.QtDBus.QtTypeName.In0"/>
          <annotation value="QList&lt;int&gt;" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QList&lt;int&gt;" name="org.qtproject.QtDBus.QtTypeName.Out1"/>
          <annotation value="QDBusMenuItemList" name="org.qtproject.QtDBus.QtTypeName.In0"/>
          <annotation value="QDBusMenuItemKeysList" name="org.qtproject.QtDBus.QtTypeName.In1"/>
          <annotation value="QXdgDBusImageVector" name="org.qtproject.QtDBus.QtTypeName"/>
          <annotation value="QXdgDBusImageVector" name="org.qtproject.QtDBus.QtTypeName"/>
          <annotation value="QXdgDBusImageVector" name="org.qtproject.QtDBus.QtTypeName"/>
          <annotation value="QXdgDBusToolTipStruct" name="org.qtproject.QtDBus.QtTypeName"/>
    Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
    QtMetaTypePrivate::QPairVariantInterfaceImpl
    QtMetaTypePrivate::QAssociativeIterableImpl
    WARNING Qt AtSpiAdaptor: Could not find accessible on path: 
    WARNING Qt AtSpiAdaptor: Could not find application interface for: 
    WARNING Qt AtSpiAdaptor: Could not find table interface for: 
    WARNING Qt AtSpiAdaptor: Accessible invalid: 
          <annotation value="QSpiAttributeSet" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiAttributeSet" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiRangeList" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiAttributeSet" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiAttributeSet" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiIntList" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiIntList" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiRect" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiActionArray" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReferenceArray" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiRelationArray" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiUIntList" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiAttributeSet" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiAccessibleCacheArray" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiAccessibleCacheItem" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiObjectReference" name="org.qtproject.QtDBus.QtTypeName.Out0"/>
          <annotation value="QSpiDeviceEvent" name="org.qtproject.QtDBus.QtTypeName.In0"/>
          <annotation value="QSpiDeviceEvent" name="org.qtproject.QtDBus.QtTypeName.In0"/>
    

    Does that mean that this library is for Qt 5.9? And is not compatible with Qt 5.12.9 that we have installed with Qt installer?

    We're getting the similar results for the ls command,

    -rw-r--r-- 1 root root    1602 Feb  7  2020 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.prl
    lrwxrwxrwx 1 root root      21 Feb  7  2020 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so -> libQt5XcbQpa.so.5.9.5
    lrwxrwxrwx 1 root root      21 Feb  7  2020 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 -> libQt5XcbQpa.so.5.9.5
    lrwxrwxrwx 1 root root      21 Feb  7  2020 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.9 -> libQt5XcbQpa.so.5.9.5
    -rw-r--r-- 1 root root 1070840 Feb  7  2020 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.9.5
    
    1 Reply Last reply
    0
    • hskoglundH Online
      hskoglundH Online
      hskoglund
      wrote on last edited by
      #39

      Indeed, the apt version of Qt you've got is 5.9.5. which does not play well with 5.12.9 :-(

      Easiest short-term solution to get AppImage working is to try downgrade your 5.12.9 to 5.9.5 (with a bit of luck any 5.9.x version will do, but see if you can find 5.9.5 first).

      (Long-term: try purging all apt-flavored Qt stuff from your Ubuntu system and rely solely on Qt's online installer.)

      S 1 Reply Last reply
      0
      • hskoglundH hskoglund

        Indeed, the apt version of Qt you've got is 5.9.5. which does not play well with 5.12.9 :-(

        Easiest short-term solution to get AppImage working is to try downgrade your 5.12.9 to 5.9.5 (with a bit of luck any 5.9.x version will do, but see if you can find 5.9.5 first).

        (Long-term: try purging all apt-flavored Qt stuff from your Ubuntu system and rely solely on Qt's online installer.)

        S Offline
        S Offline
        singhravi
        wrote on last edited by
        #40

        @hskoglund Thanks for the confirmation!
        Actually as per the application doc, its required to be 5.12 or greater,
        For Desktop : you will need Qt5 (5.12 or newer). C++11 support is required!

        I've uninstalled qt5-doc and other dependent packages installed via apt and built it again but xcb error is still there.
        I'm checking if there is anything else remained to be removed.
        Will update.

        hskoglundH 1 Reply Last reply
        0
        • S singhravi

          @hskoglund Thanks for the confirmation!
          Actually as per the application doc, its required to be 5.12 or greater,
          For Desktop : you will need Qt5 (5.12 or newer). C++11 support is required!

          I've uninstalled qt5-doc and other dependent packages installed via apt and built it again but xcb error is still there.
          I'm checking if there is anything else remained to be removed.
          Will update.

          hskoglundH Online
          hskoglundH Online
          hskoglund
          wrote on last edited by
          #41

          @singhravi To get rid of that faulty libQt5XcbQpa.so.5, try:

          sudo apt remove libqt5gui5
          

          (note: just guessing..)

          S 2 Replies Last reply
          0
          • hskoglundH hskoglund

            @singhravi To get rid of that faulty libQt5XcbQpa.so.5, try:

            sudo apt remove libqt5gui5
            

            (note: just guessing..)

            S Offline
            S Offline
            singhravi
            wrote on last edited by
            #42

            @hskoglund Yeah this should remove it. But wouldn't this library be needed by the Qt installed by online installer?
            Let me run the build after removing this meanwhile.

            1 Reply Last reply
            0
            • hskoglundH hskoglund

              @singhravi To get rid of that faulty libQt5XcbQpa.so.5, try:

              sudo apt remove libqt5gui5
              

              (note: just guessing..)

              S Offline
              S Offline
              singhravi
              wrote on last edited by
              #43

              @hskoglund Actually other programs are depending on this qt library installed. Like VLC player, screen recorder and other Qt based apps.
              So doing sudo apt remove libqt5gui5 would also remove those apps.

              1 Reply Last reply
              0
              • hskoglundH Online
                hskoglundH Online
                hskoglund
                wrote on last edited by
                #44

                If those other programs are installed using apt, then apt should warn you if you issue a sudo apt remove libqt5gui5, then other programs are dependent on it (I think so). But I suggest yoy go for it and try the AppImage. Later, if the VLC player malfunctions, you can always do:
                sudo apt install libqt5gui5

                Also, about the Qt version installed by the online installer: it resides 100% in your $HOME directory, it does not touch anything in /usr/lib/x86_64-linux-gnu, nor does it need any Qt files to be installed in /usr/lib/x86_64-linux-gnu.

                Only disadvantage is that, since apt is unaware of it, you have to keep it updated yourself (but Qt Creator has a nice plugin that periodically checks that for you).

                S J 2 Replies Last reply
                1
                • hskoglundH hskoglund

                  If those other programs are installed using apt, then apt should warn you if you issue a sudo apt remove libqt5gui5, then other programs are dependent on it (I think so). But I suggest yoy go for it and try the AppImage. Later, if the VLC player malfunctions, you can always do:
                  sudo apt install libqt5gui5

                  Also, about the Qt version installed by the online installer: it resides 100% in your $HOME directory, it does not touch anything in /usr/lib/x86_64-linux-gnu, nor does it need any Qt files to be installed in /usr/lib/x86_64-linux-gnu.

                  Only disadvantage is that, since apt is unaware of it, you have to keep it updated yourself (but Qt Creator has a nice plugin that periodically checks that for you).

                  S Offline
                  S Offline
                  singhravi
                  wrote on last edited by
                  #45

                  @hskoglund Yup, when ahead with this as the primary focus right now is to get this going.
                  And then i ran the command to create the build as well.
                  But it failed as qmake was not able to find Qt.

                  [qt/stdout] Found Qt modules: concurrent core dbus gui network qml quick quickcontrols2 quicktemplates2 svg texttospeech widgets 
                  [qt/stdout] Extra Qt modules:  
                  [qt/stdout] Using qmake: /usr/bin/qmake 
                  [qt/stdout] ERROR: Call to qmake failed: qmake: could not find a Qt installation of ''
                  [qt/stdout]  
                  [qt/stdout] ERROR: Failed to query Qt paths using qmake -query 
                  

                  Should i set some environment variable or create some softlinks for installed Qt to be used?
                  Something of that sort should fixed this i think.

                  1 Reply Last reply
                  0
                  • hskoglundH Online
                    hskoglundH Online
                    hskoglund
                    wrote on last edited by
                    #46

                    Hmm, if that /usr/bin/qmake is still around, you should get rid of it (I think it's qtchooser):

                    sudo apt remove qtchooser
                    

                    Then to point the linphone-desktop package to where your 5.12.9 is, on their github page it says, set these exports:
                    Qt5_DIR="~/Qt/5.12.9/gcc_64/lib/cmake"
                    PATH="~/Qt/5.12.9/gcc_64/bin/:$PATH"

                    S 1 Reply Last reply
                    0
                    • hskoglundH hskoglund

                      Hmm, if that /usr/bin/qmake is still around, you should get rid of it (I think it's qtchooser):

                      sudo apt remove qtchooser
                      

                      Then to point the linphone-desktop package to where your 5.12.9 is, on their github page it says, set these exports:
                      Qt5_DIR="~/Qt/5.12.9/gcc_64/lib/cmake"
                      PATH="~/Qt/5.12.9/gcc_64/bin/:$PATH"

                      S Offline
                      S Offline
                      singhravi
                      wrote on last edited by
                      #47

                      @hskoglund
                      The env variables, Qt5_DIR and PATH are set with what you suggested.
                      I think qmake is required that is why i must have installed it.
                      I've ran the build again. Lets see.

                      hskoglundH 1 Reply Last reply
                      0
                      • hskoglundH Online
                        hskoglundH Online
                        hskoglund
                        wrote on last edited by
                        #48

                        BTW, found another option: if you can upgrade your Ubuntu 18.04 to 20.04 then you're in luck: the Qt version installed by apt on Ubuntu 20.04 is 5.12.8 :-)

                        1 Reply Last reply
                        1
                        • S singhravi

                          @hskoglund
                          The env variables, Qt5_DIR and PATH are set with what you suggested.
                          I think qmake is required that is why i must have installed it.
                          I've ran the build again. Lets see.

                          hskoglundH Online
                          hskoglundH Online
                          hskoglund
                          wrote on last edited by
                          #49

                          @singhravi Your Qt 5.12.9 has the qmake program in ~/Qt/5.12.9/gcc_64/bin/ so that PATH export setting should point the script to the correct qmake.

                          S 1 Reply Last reply
                          3
                          • hskoglundH hskoglund

                            @singhravi Your Qt 5.12.9 has the qmake program in ~/Qt/5.12.9/gcc_64/bin/ so that PATH export setting should point the script to the correct qmake.

                            S Offline
                            S Offline
                            singhravi
                            wrote on last edited by
                            #50

                            @hskoglund I believe we've found the solution to this.
                            The problem was ~ (tlide) was not working with .zshrc config.
                            Hence qmake and other binary were not being found.
                            I've changed it to the absolute path now.
                            Running the build again. Lets see :)

                            1 Reply Last reply
                            1
                            • S Offline
                              S Offline
                              singhravi
                              wrote on last edited by
                              #51

                              It Worked! :facepalm: :D
                              Thanks a lot @hskoglund for helping me troubleshoot this! You're great.
                              So the problem was a ~ from the beginning. This was too silly.
                              Build is sucsessful and Package is running fine now.

                              1 Reply Last reply
                              2
                              • hskoglundH Online
                                hskoglundH Online
                                hskoglund
                                wrote on last edited by
                                #52

                                Hah, so it was a ~ that sent you on a wild goose chase!
                                (tildes can be a PITA, I remember tripping on them when trying to ssh into Ubuntu from Windows)
                                Anways, glad to hear its working now :-)

                                1 Reply Last reply
                                2
                                • hskoglundH hskoglund

                                  If those other programs are installed using apt, then apt should warn you if you issue a sudo apt remove libqt5gui5, then other programs are dependent on it (I think so). But I suggest yoy go for it and try the AppImage. Later, if the VLC player malfunctions, you can always do:
                                  sudo apt install libqt5gui5

                                  Also, about the Qt version installed by the online installer: it resides 100% in your $HOME directory, it does not touch anything in /usr/lib/x86_64-linux-gnu, nor does it need any Qt files to be installed in /usr/lib/x86_64-linux-gnu.

                                  Only disadvantage is that, since apt is unaware of it, you have to keep it updated yourself (but Qt Creator has a nice plugin that periodically checks that for you).

                                  J Offline
                                  J Offline
                                  Jalpesh
                                  wrote on last edited by
                                  #53

                                  @hskoglund thank Man!

                                  sudo apt remove qtchooser
                                  sudo apt install libqt5gui5

                                  boom.... its work

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                                  • C Offline
                                    C Offline
                                    chEguy
                                    wrote on last edited by chEguy
                                    #54

                                    Guys I still am getting this error

                                    qt.qpa.xcb: could not connect to display :0
                                    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, xcb.
                                    Aborted

                                    BTW I am using Ubuntu20 on Windows10 with xcvsrv as X server

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                                    • C chEguy

                                      Guys I still am getting this error

                                      qt.qpa.xcb: could not connect to display :0
                                      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, xcb.
                                      Aborted

                                      BTW I am using Ubuntu20 on Windows10 with xcvsrv as X server

                                      C Offline
                                      C Offline
                                      chEguy
                                      wrote on last edited by
                                      #55

                                      I actually am not able to connect it to the display

                                      Please help

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                                      • hskoglundH Online
                                        hskoglundH Online
                                        hskoglund
                                        wrote on last edited by
                                        #56

                                        Hi just guessing but maybe the solution in this post will help you too.

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                                        1
                                        • L Lengendary

                                          Thanks very much!
                                          I spent several hours trying to solve this problem until I got here.
                                          sudo apt-get install libxcb-xinerama0
                                          Thanks!

                                          M Offline
                                          M Offline
                                          Matriarch
                                          wrote on last edited by
                                          #57

                                          @Lengendary This is working solution for me, thank you

                                          sudo apt-get install libxcb-xinerama0

                                          V 1 Reply Last reply
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