[jd_user123]

[edit: solved the original problem with switching from wayland to x11 via sudo raspi-config => advanced options => wayland. thanks everyone for rubberducking ]


Hi
first thank you all for providing this great tool!
When I start JD on a freshly set up and updated Raspberry Pi 4 Model B Rev 1.5 with debian bookworm in GUI mode with openjdk ov version 17.0.13 with

sudo java -jar JDownloader.jar

The first time JD starts up normallyb esides an error dialogue "Tray isn't supported!", which is not bothering me.


however after closing and starting JD subsequently times in the same way again, JD starts up, but the main window stays blank:


The program seems running as the cmd window keeps showing activity, for example when resizing the window, but the window stays blanc.

Google results so far seem really old, so I'd like to ask here if a solution is known. thanks!

so far tried:
added

export _JAVA_AWT_WM_NONREPARENTING=1 
AWT_TOOLKIT=MToolkit

to /etc/profile alongside what i found here: **External links are only visible to Support Staff****External links are only visible to Support Staff**

checking on the window manager i found

>>echo $DESKTOP_SESSION
LXDE-pi-labwc

added

export GDK_BACKEND=x11

to environment variables

running the program with

java -Dsun.java2d.uiScale=1 -Dsun.java2d.opengl=true -jar JDownloader,jar

resulted in some GUI elements rendered, but very buggy and lots of java errors in the cmd


other references:
https://board.jdownloader.org/showthread.php?t=76920
https://board.jdownloader.org/showpo...0&postcount=22 from thread https://board.jdownloader.org/showthread.php?t=76920
**External links are only visible to Support Staff****External links are only visible to Support Staff**

Thank you for any hints to get this to run!

[Jiaz]

@jd_user123: You switched to wayland and thus requires xwayland to be installed. Java does not support pure wayland environment yet. So switching back to x11 or proper xwayland should solve the issue.
Your edit shows that you already solved it by yourself with same solution Thanks for the feedback!