Wayland: Tray Applet dont get loaded?

[LinuxDonald]

Details about the problem

Tray Applet is not visible on KDE Plasma Wayland

Operating System / Desktop Environment / Version(s)

Manjaro KDE Wayland with OpenRazer 3.2.0 and
polychromatic latest git.

[lah7]

Can confirm under Wayland that it doesn't appear initially at boot, but it works when ran from a terminal later:

polychromatic-tray-applet -v

There is some weirdness with KDE Plasma and a GTK tray applet starting at login. Adding a delay seems to work:

• In the main application: Edit → Preferences → Tray Applet → Autostart Delay → Set to 4 seconds
• If you prefer to edit by hand instead, change autostart_delay in ~/.config/polychromatic/preferences.json

[LinuxDonald]

With restart Tray Applet it show it. But not terminal it get this warning:

polychromatic-controller  ✔
/usr/bin/polychromatic-tray-applet:224: DeprecationWarning: Gtk.ImageMenuItem.set_image is deprecated
item.set_image(img) # GTK3: Deprecated, no replacement!

[lah7]

The DeprecationWarning is expected and no cause for concern. 👍🏼 GTK4 dropped support for the tray icons¹²

This application will port the tray applet to Qt in future as another option, which should integrate better with KDE (and possibly Wayland).

Footnotes

1. https://discourse.gnome.org/t/what-to-use-instead-of-statusicon-in-gtk4-to-display-the-icon-in-the-system-tray/7175) ↩

2. https://blogs.gnome.org/aday/2017/08/31/status-icons-and-gnome/ ↩