https://bugs.kde.org/show_bug.cgi?id=451782

steen.me...@gmail.com <steen.me...@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |steen.me...@gmail.com

--- Comment #1 from steen.me...@gmail.com <steen.me...@gmail.com> ---
I have the same, since the last few weeks, probably since the upgrade, Falkon
cannot start. Sometimes a window shows up for a fraction of a second. Error
message in console:
WebEngineContext used before QtWebEngine::initialize() or OpenGL context
creation failed.
QGLXContext: Failed to create dummy context
Failed to load python support plugin "Cannot load library
/usr/lib/qt/plugins/falkon/PyFalkon.so:
(libpyside2.cpython-310-x86_64-linux-gnu.so.5.15: cannot open shared object
file: No such file or directory)"
Falkon: 1 extensions loaded
Fatal: Failed to create OpenGL context for format QSurfaceFormat(version 2.0,
options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24,
redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1,
stencilBufferSize 8, samples 0, swapBehavior
QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace
QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile) 
zsh: IOT instruction (core dumped)  

There is no 'libpyside2' on the system and no
'cpython-310-x86_64-linux-gnu.so.5' but lots of
'cpython-310-x86_64-linux-gnu.so'

After pyside2 is installed the same behaviour produces this error:
WebEngineContext used before QtWebEngine::initialize() or OpenGL context
creation failed.  
QGLXContext: Failed to create dummy context
Failed to load python support plugin "Cannot load library
/usr/lib/qt/plugins/falkon/PyFalkon.so:
(/usr/lib/qt/plugins/falkon/PyFalkon.so: undefined symbol:
_ZN6PySide16fillQtPropertiesEP7_objectPK11QMetaObjectS1_PPKcj)"
Falkon: 1 extensions loaded
Fatal: Failed to create OpenGL context for format QSurfaceFormat(version 2.0,
options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24,
redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1,
stencilBufferSize 8, samples 0, swapBehavior
QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace
QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile) 

Note: /usr/lib/qt/plugins/falkon/PyFalkon.so exists.

Linux 5.15.28-1-MANJARO

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