[kstart] [Bug 418463] New: "qt.qpa.xcb: could not connect to display". Cant start plasma after update and reboot

[Daniel]

https://bugs.kde.org/show_bug.cgi?id=418463

            Bug ID: 418463
           Summary: "qt.qpa.xcb: could not connect to display". Cant start
                    plasma after update and reboot
           Product: kstart
           Version: 5.18.1
          Platform: Kubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: daniilgavshin at gmail.com
  Target Milestone: ---

SUMMARY


STEPS TO REPRODUCE
1. pkcon update
2. reboot

OBSERVED RESULT
$> kstart5

Got keys from plugin meta data ("wayland-xcomposite-glx")
QFactoryLoader::QFactoryLoader() looking at
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
Found metadata in lib
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 331264
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms"
...
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/KWinQpaPlugin.so"
Got keys from plugin meta data ("wayland-org.kde.kwin.qpa")
QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqeglfs.so"
Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqlinuxfb.so"
Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqminimal.so"
Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/libqminimalegl.so"
Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/libqoffscreen.so"
Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqvnc.so"
Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/libqwayland-egl.so"
Got keys from plugin meta data ("wayland-egl")
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/libqwayland-generic.so"
Got keys from plugin meta data ("wayland")
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/libqwayland-xcomposite-egl.so"
Got keys from plugin meta data ("wayland-xcomposite-egl")
QFactoryLoader::QFactoryLoader() looking at
"/usr/bin/platforms/libqwayland-xcomposite-glx.so"
Got keys from plugin meta data ("wayland-xcomposite-glx")
QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqxcb.so"
Got keys from plugin meta data ("xcb")
loaded library "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
qt.qpa.xcb: could not connect to display 
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: wayland-org.kde.kwin.qpa, eglfs, linuxfb,
minimal, minimalegl, offscreen, vnc, wayland-egl, wayland,
wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Linux 5.3.0-40 generic 18.04 Ubuntu
(available in About System)
KDE Plasma Version: 4:5.18.2+p18.04+git20200303
KDE Frameworks Version: 
Qt Version: 
5.14.1+dsfg-0+xneon+18.04+bionic+build81
ADDITIONAL INFORMATION

-- 
You are receiving this mail because:
You are the assignee for the bug.