source: trunk/doc/src/getting-started/known-issues.qdoc@ 561

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

/*!
    \page known-issues.html
    \title Known Issues in 4.6.1
    \ingroup platform-specific
    \brief A summary of known issues in Qt 4.6.1 at the time of release.

    An up-to-date list of known issues with Qt 4.6.1 can be found via the
    \l{http://bugreports.qt.nokia.com/}{Qt Bug Tracker}.

    For a list list of known bugs in Qt 4.6.1, see the \l{Task Tracker}
    on the Qt website.

    An overview of known issues may also be found at:
    \l{http://qt.gitorious.org/qt/pages/Qt460KnownIssues}
    {Known Issues Wiki}.

    \section1 Installation Issues

    \section2 Installing the Source Package on Unix systems

    \list

    \o  If you download a Zip source package, you will need to convert
        Windows-style line endings (CR/LF) to Unix-style line-endings (LF) when
        you uncompress the package.  To do this, give the "-a" option when you
        run the "unzip' command.

    \o  If you fail to supply the "-a" option when unzipping the package, you
        will see the following error message when you attempt to execute the
        configure command:
        "bash: ./configure: /bin/sh^M: bad interpreter: No such file or directory"

    \endlist

    \section2 Installing on Mac OS X 10.6 "Snow Leopard"

    \list

    \o Performing a new install of the Qt 4.6 beta on Snow Leopard
       triggers a bug in the installer that causes the install to fail.
       Updating an existing Qt installation works fine.

    \o There are two workarounds, either disable spotlight for the target
       drive during the install, or do a custom install where you deselect
       documentation and examples. Run the installer again as a full
       install to get the documentation and examples installed.

    \endlist

    \section1 Issues with Third Party Software

    \section2 X11

    \list
    \o  There is a bug in the 169.xx NVIDIA drivers on certain GeForce 8 series
        cards that is triggered by the OpenGL paint engine when using QPainter
        on a QGLWidget to draw paths and polygons. Some other painting
        operations that end up in the path fallback are affected as well. The
        bug causes the whole X server to repeatedly hang for several seconds at
        a time.
    \o  There is an issue with NVIDIA's 9xxx driver series on X11 that causes a
        crash in cases where there are several \l{QGLContext}s and the extended
        composition modes are used (the composition modes between and including
        QPainter::CompositionMode_Multiply and
        QPainter::CompositionMode_Exclusion). This affects the composition mode
        demo in Qt 4.5, for example. The crash does not occur in newer versions
        of the drivers.
    \endlist

    \section2 Windows

    \list

    \o  When using version 6.14.11.6921 of the NVIDIA drivers for the GeForce
        6600 GT under Windows XP, Qt applications which use drag and drop will
        display reduced size drag and drop icons when run alongside
        applications that use OpenGL. This problem can be worked around by
        reducing the level of graphics acceleration provided by the driver, or
        by disabling hardware acceleration completely.

    \o  With NVIDIA GeForce 7950 GT (driver version 6.14.11.7824), a fullscreen
        QGLWidget flickers when child widgets are shown/hidden. The workaround
        for this is to use \l{QWidget::}{setGeometry()} with a width/height 1
        pixel bigger than your geometry and call \l{QWidget::}{show()}.

    \o  A bug in the Firebird database can cause an application to crash when
        \c{fbembed.dll} is unloaded. The bug is fixed in version 2.5.

    \o  On Windows 7, resizing windows is slower than on Vista/Xp. This is because
        the gesture initialization process (required for native gesture support)
        currently calls winId() on widgets, which causes whole widget hierarchies
        to use native window handles. This slows down resizing.

    \o  Compile errors with Intel C++ Compiler.\br
        There seems to be a bug in the Intel compiler with respect to
        over-agressive inlining of code.
        The problem will manifest itself during the link phase of QtGui where
        it fails with the error that it cannot find QObjectData::~QObjectData().
        See \l{http://bugreports.qt.nokia.com/browse/QTBUG-5145} for updates on this
        bug.
        Also, due to some bugs in WebKit, the QtScript and QtWebKit modules
        will not compile.
        See \l{http://bugreports.qt.nokia.com/browse/QTBUG-6297} for a
        workaround for QtScript.
        
    \endlist

    \section2 Mac OS X

    \list

    \o  If a sheet is opened for a given window, clicking the title bar of that
        window will cause it to flash. This behavior has been reported to Apple
        (bug number 5827676).

    \endlist

    \section2 Symbian

    \list
    \o  Check known issues for Symbian at
    \l{http://qt.gitorious.org/qt/pages/Qt460KnownIssues} {Known Issues Wiki}.
    \endlist
*/