https://bugs.kde.org/show_bug.cgi?id=418462
Bug ID: 418462
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-b...@kde.org
Reporter: daniilgavs...@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
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