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qtVlm 5.10.7 not working on raspberry pi

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3 years 4 months ago #1117 by tdml02r
Hi,
trying to run qtVlm 5.10.7 on raspberry pi but getting the following error:

      ./qtVlm
      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: linuxfb, minimal, offscreen, xcb.

     Aborted

i have tried to install  libxcb-xinerama0 but it is already the latest version (1.14-3)

any ideas  what's wrong?

thanks

Tom
 

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3 years 4 months ago #1118 by maitai
Hello,
First of all we are now running 5.10.9-p1, please update.
Also have a look at documentation page 9.
--Philippe.

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3 years 4 months ago #1119 by oxygen77
Also, if updating is not enough, launch qtVlm from command line after inputing this:
Code:
export QT_DEBUG_PLUGINS=1

And put the output here

 

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3 years 4 months ago #1120 by tdml02r
thank you for the fast responses.
upgraded to 5.10.9-p1 and tried everything on page 9 of the manual : still same issue.
debug output:
QFactoryLoader::QFactoryLoader() checking directory path "/home/pi/Downloads/qtVlm/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/home/pi/Downloads/qtVlm/platforms/libqlinuxfb.so"
Found metadata in lib /home/pi/Downloads/qtVlm/platforms/libqlinuxfb.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"linuxfb"
]
},
"archreq": 0,
"className": "QLinuxFbIntegrationPlugin",
"debug": false,
"version": 331008
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/home/pi/Downloads/qtVlm/platforms/libqminimal.so"
Found metadata in lib /home/pi/Downloads/qtVlm/platforms/libqminimal.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"minimal"
]
},
"archreq": 0,
"className": "QMinimalIntegrationPlugin",
"debug": false,
"version": 331008
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/home/pi/Downloads/qtVlm/platforms/libqoffscreen.so"
Found metadata in lib /home/pi/Downloads/qtVlm/platforms/libqoffscreen.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"offscreen"
]
},
"archreq": 0,
"className": "QOffscreenIntegrationPlugin",
"debug": false,
"version": 331008
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/home/pi/Downloads/qtVlm/platforms/libqxcb.so"
Found metadata in lib /home/pi/Downloads/qtVlm/platforms/libqxcb.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"xcb"
]
},
"archreq": 0,
"className": "QXcbIntegrationPlugin",
"debug": false,
"version": 331008
}


Got keys from plugin meta data ("xcb")
Cannot load library /home/pi/Downloads/qtVlm/platforms/libqxcb.so: (libxcb-util.so.0: cannot open shared object file: No such file or directory)
QLibraryPrivate::loadPlugin failed on "/home/pi/Downloads/qtVlm/platforms/libqxcb.so" : "Cannot load library /home/pi/Downloads/qtVlm/platforms/libqxcb.so: (libxcb-util.so.0: 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: linuxfb, minimal, offscreen, xcb.

Aborted


Thanks
Tom

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3 years 4 months ago #1121 by oxygen77
I guess that you are on a recent version of raspbian ?

Can you try :
- go in: /usr/lib/arm-linux-gnueabihf
- do: ln -s libxcb-util.so.1 libxcb-util.so.0

Launch again qtvlm

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3 years 4 months ago #1122 by tdml02r
Yes I’m using the latest version (bullseye)
That worked, thanks very much

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