Hi Team,

I am facing a problem with the KDE desktop launch issue. I have integrated my image openembedded-core, meta-openembdded, meta-yocto-kde,meta-yocto-kf5,meta-qt5, meta-yocto-kde-demo layers. I have built my KDE demo image successfully.
But while booting my image I am able to launch the KDE login prompt. I have mentioned login name: KDE and password: KDE. display side I have integrated both x11 & Wayland. Using the export DISPLAY=:0.0 command I am able to get the login prompt fine.

After entering the login prompt I am getting a black screen with a cursor.

showing Xwayland compositor press the right control key to grab input. when enter (alt+ f2 ) am able to see my applications.
But directly it is showing only black screen can you please guide me what I had done mistake my end.

check below my log :

Code: Select all

kwin_wayland
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/var/volatile/tmp/runtime-kde'
No backend specified through command line argument, trying auto resolution
error: XDG_RUNTIME_DIR not set in the environment
FATAL ERROR: could not add wayland socket
semi-u740:~$ export XDG_RUNTIME_DIR=/var/volatile/tmp/runtime-kde
semi-u740:~$ kwin_wayland
No backend specified through command line argument, trying auto resolution
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5040:46: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5042:48: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5044:48: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5048:47: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5050:46: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5058:48: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5062:46: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5064:46: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5068:45: this compose seque
kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5071:46: this compose seque
QImage::scaled: Image is a null image
OpenGL vendor string:                   X.Org
OpenGL renderer string:                 AMD CAICOS (DRM 2.50.0 / 5.10.41)
OpenGL version string:                  OpenGL ES 3.1 Mesa 20.1.8
OpenGL shading language version string: OpenGL ES GLSL ES 3.10
Driver:                                 R600G
GPU class:                              Unknown
OpenGL version:                         3.1
GLSL version:                           3.10
Mesa version:                           20.1.8
Linux kernel version:                   5.10.41
Requires strict binding:                no
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
kwin_core: eglPostSubBufferNV not supported, have to enable buffer preservation - which be
Filter multi-plane format 961959257
Filter multi-plane format 825316697
Filter multi-plane format 842093913
Filter multi-plane format 909202777
Filter multi-plane format 875713881
Filter multi-plane format 961893977
Filter multi-plane format 825316953
Filter multi-plane format 842094169
Filter multi-plane format 909203033
Filter multi-plane format 875714137
Filter multi-plane format 842094158
Filter multi-plane format 909203022
kwin_xkbcommon: XKB: inet:224:50: unrecognized keysym "XF86FullScreen"
QImage::scaled: Image is a null image
KscreenConfig::instance called after the first use - ignoring
QImage::scaled: Image is a null image
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
virtual QStringList Solid::Backends::UPower::UPowerManager::allDevices()  error:  "org.fr"
qt.svg: <input>:303:258: Could not add child element to parent element because the types .
qt.svg: <input>:303:463: Could not add child element to parent element because the types .
qt.svg: <input>:303:659: Could not add child element to parent element because the types .
qt.svg: <input>:303:913: Could not add child element to parent element because the types .
qt.svg: <input>:303:1049: Could not add child element to parent element because the types.
qt.svg: <input>:303:1251: Could not add child element to parent element because the types.
qt.svg: <input>:303:1453: Could not add child element to parent element because the types.
qt.svg: <input>:303:1631: Could not add child element to parent element because the types.
qt.svg: <input>:303:1739: Could not add child element to parent element because the types.
qt.svg: <input>:303:1980: Could not add child element to parent element because the types.
qt.svg: <input>:303:2223: Could not add child element to parent element because the types.
QImage::scaled: Image is a null image
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserLisl
Authentication failure
Authentication failure
kde








QImage::scaled: Image is a null image






(EE) event0  - NOVATEK USB NETVISTA FULL WIDTH KEYBOARD: client bug: event processing lagw
(EE) event0  - NOVATEK USB NETVISTA FULL WIDTH KEYBOARD: client bug: event processing lagw




qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
virtual QStringList Solid::Backends::UPower::UPowerManager::allDevices()  error:  "org.fr"
QImage::scaled: Image is a null image
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserLisl














/var/volatile/tmp/runtime-kde/var/volatile/tmp/runtime-kde/var/volatile/tmp/runtime-kde/ve
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