My application creates a SystemTray icon as its primary user interface. This has caused issues with some desktops (notably GNOME shell) but so far I have been able to find workarounds for these issues.
Until now, SystemTray has worked perfectly on Raspberry Pi OS. The latest version of this (based on Debian bookworm) uses Wayland by default instead of X11. The xwayland apt package is installed. SystemTray is not working in this environment, with SystemTray.isSupported() returning false. There is a raspi-config option to use X11 instead of Wayland. If I select this and reboot, everything works perfectly as previously. For now, I can tell users to do this but at some point there will be Linux distros with no option to make this change. I have searched extensively to try to find out if this is a known issue or limitation and I haven't found anything. There is JDK-8146318 but this is very old and seems to be a different issue. Should it be possible to make SystemTray work with the current JDK on Wayland with xwayland by setting some system configuration? (I have tried the latest JDK 23 EA build.) If not, is there any possibility that this could be fixed by a change in the JDK? Many thanks, Simon
