Darrell Anderson via tde-devels wrote:

I presume you are referring to "quick launch" buttons?

Yes

• Does .xsession-errors show anything?

No

• Is there a TDE menu option for the same? Does launching from the menu

succeed?

Yes there are TDE menu entries, but it does not start from there. The Signal one is special as it does not show in the tray. This is why I start it with ksystray command.

• "Right-click" on the icon, select "Configure Signal button" or

similar. In the respective popup dialog, look in the Applications tab. Note the command and try to launch the same in a terminal window.

As written in my post, in the terminal it starts and this is what I do not understand.

• Look for a signal.desktop file or something named like that (locate

signal | grep desktop). In that file will be an Exec= key. If there is no such file then likely nothing will appear in the TDE menu either.

Exec=/opt/Signal/signal-desktop %U Exec=/opt/teams-for-linux/teams-for-linux %U

what does %U mean? User?

• Check the package contents to see if there are any related *.desktop

files.

/usr/share/applications/signal-desktop.desktop /usr/share/applications/teams-for-linux.desktop

I don't understand why it starts in the console and not from menu or from the panel

Darrell Anderson via tde-devels wrote:

I presume you are referring to "quick launch" buttons?

• Does .xsession-errors show anything?

After some time (for example I started Signal in the morning) the app is gone from systray. In .xsession-errors I find following

{"level":30,"time":"2025-05-19T11:29:00.135Z","msg":"close event {"readyForShutdown":false,"shouldQuit":false}"} {"level":30,"time":"2025-05-19T11:29:00.136Z","msg":"maybeRequestCloseConfirmation: Checking to see if close confirmation is needed"} {"level":30,"time":"2025-05-19T11:29:00.147Z","msg":"maybeRequestCloseConfirmation: Response received"} {"level":30,"time":"2025-05-19T11:29:00.148Z","msg":"System tray service: rendering no tray"} {"level":30,"time":"2025-05-19T11:29:00.149Z","msg":"Updating BrowserWindow config: %s {"maximized":true,"autoHideMenuBar":false "fullscreen":false,"width":1510,"height":808,"x":23,"y":28}"} {"level":30,"time":"2025-05-19T11:29:00.149Z","msg":"config/set: Saving ephemeral config to disk"} {"level":30,"time":"2025-05-19T11:29:00.161Z","msg":"config/set: Saved ephemeral config to disk"} {"level":30,"time":"2025-05-19T11:29:00.161Z","msg":"requestShutdown: Requesting close of mainWindow..."} {"level":30,"time":"2025-05-19T11:29:00.177Z","msg":"requestShutdown: Response received"} {"level":30,"time":"2025-05-19T11:29:00.285Z","msg":"before-quit event {"readyForShutdown":true,"shouldQuit":false "hasEventBeenPrevented":false,"windowCount":1 "mainWindowExists":true,"mainWindowIsFullScreen":false}"} {"level":30,"time":"2025-05-19T11:29:00.285Z","msg":"System tray service: markShouldQuit"} {"level":30,"time":"2025-05-19T11:29:00.285Z","msg":"close event {"readyForShutdown":true,"shouldQuit":true}"} {"level":30,"time":"2025-05-19T11:29:00.289Z","msg":"main window closed event"} {"level":30,"time":"2025-05-19T11:29:00.289Z","msg":"System tray service: updating main window. Previously, there was a window, and now there is not"} {"level":30,"time":"2025-05-19T11:29:00.289Z","msg":"System tray service: rendering no tray"} {"level":30,"time":"2025-05-19T11:29:00.289Z","msg":"will-quit event {"hasEventBeenPrevented":false,"windowCount":0 "mainWindowExists":false}"} {"level":30,"time":"2025-05-19T11:29:00.289Z","msg":"quit event {"hasEventBeenPrevented":false,"windowCount":0 "mainWindowExists":false}"}

Where is this event coming from? Why is it happening now? Same for teams-for-linux ...

It might be or may not be a TDE panel issue. I am doing an update that upgrades both. Will reboot and write back. Very strange in any case.