# Can't start latest stable on ubuntu 20.04

**URL:** <https://discourse.slicer.org/t/cant-start-latest-stable-on-ubuntu-20-04/14029>\
**Category:** Support\
**Created:** [October 14, 2020, 3:58am UTC](https://discourse.slicer.org/t/cant-start-latest-stable-on-ubuntu-20-04/14029 "2020-10-14T03:58:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [October 14, 2020, 4:05am UTC](https://discourse.slicer.org/t/cant-start-latest-stable-on-ubuntu-20-04/14029/2 "2020-10-14T04:05:53Z")

</div>

OK. As per [this thread,](https://askubuntu.com/questions/308128/failed-to-load-platform-plugin-xcb-while-launching-qt5-app-on-linux-without) setting:  
export QT\_DEBUG\_PLUGINS=1

revealed missing library libxcb-xinerama0. Installing it fixed the problem.

```
maga@magalab-ubuntu:~/Downloads/Slicer-4.11.20200930-linux-amd64$ export QT_DEBUG_PLUGINS=1
maga@magalab-ubuntu:~/Downloads/Slicer-4.11.20200930-linux-amd64$ ./Slicer 
QFactoryLoader::QFactoryLoader() ignoring "com.nokia.qt.QGuiPlatformPluginInterface" since plugins are disabled in static builds 
QFactoryLoader::QFactoryLoader() ignoring "com.trolltech.Qt.QStyleFactoryInterface" since plugins are disabled in static builds 
QFactoryLoader::QFactoryLoader() ignoring "com.trolltech.Qt.QInputContextFactoryInterface" since plugins are disabled in static builds 
QFactoryLoader::QFactoryLoader() ignoring "com.trolltech.Qt.QImageIOHandlerFactoryInterface" since plugins are disabled in static builds 
QFactoryLoader::QFactoryLoader() checking directory path "/home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/lib/QtPlugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/lib/QtPlugins/platforms/libqxcb.so"
Found metadata in lib /home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/lib/QtPlugins/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 "/home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/bin/platforms" ...
Cannot load library /home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/lib/QtPlugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)
QLibraryPrivate::loadPlugin failed on "/home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/lib/QtPlugins/platforms/libqxcb.so" : "Cannot load library /home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/lib/QtPlugins/platforms/libqxcb.so: (libxcb-xinerama.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: xcb.

error: [/home/maga/Downloads/Slicer-4.11.20200930-linux-amd64/bin/SlicerApp-real] exit abnormally - Report the problem.
```

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_[View the full topic](https://discourse.slicer.org/t/cant-start-latest-stable-on-ubuntu-20-04/14029)._