I'm sending an extract of my .config/plasma-org.kde.plasma.desktop-appletsrc. It shows that the panel containment has ID=2. The panel has a system tray applet, whose containment id is 21.
The system tray in turn has several applets in it. The interesting part is the general section. For ID=21 neither org.kde.plasma.volume nor org.kde.plasma.bluetooth is listed. Funnily enough I have an analogous general section with a different ID (ID=7), that lists both such items. The point there is no containment with ID=5. BTW there are other two general sections (for containment IDs 33 and 25), which are the exact copy of the section for ID=21 (the system tray), and aren't linked to any actual containment either. Here's the relevant part of that rc file: ----------------------------------------------------------------------- [...] [Containments][2] activityId= formfactor=2 immutability=1 lastScreen=0 location=4 plugin=org.kde.panel wallpaperplugin=org.kde.image [Containments][2][Applets][20] immutability=1 plugin=org.kde.plasma.systemtray [Containments][2][Applets][20][Configuration] SystrayContainmentId=21 [...] [Containments][21] activityId= formfactor=2 immutability=1 lastScreen=0 location=4 plugin=org.kde.plasma.private.systemtray wallpaperplugin=org.kde.image [Containments][21][Applets][22] immutability=1 plugin=org.kde.plasma.clipboard [Containments][21][Applets][23] immutability=1 plugin=org.kde.plasma.devicenotifier [Containments][21][Applets][24] immutability=1 plugin=org.kde.plasma.notifications [Containments][21][Applets][25] immutability=1 plugin=org.kde.discovernotifier [Containments][21][Applets][26] immutability=1 plugin=org.kde.plasma.networkmanagement [Containments][21][Applets][27] immutability=1 plugin=org.kde.plasma.battery [Containments][21][Applets][28] immutability=1 plugin=org.kde.plasma.mediacontroller [Containments][21][ConfigDialog] DialogHeight=1320 DialogWidth=1760 [Containments][21][General] extraItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard knownItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard [Containments][25][General] extraItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard knownItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard [Containments][33][General] extraItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard knownItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard [Containments][7][General] extraItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.bluetooth,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.volume,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard knownItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.bluetooth,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.volume,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard [...] ----------------------------------------------------------------------- I've tried to manually correct the file, but nothing changes. It's like those two applets are no longer available? Here's the changed version: ----------------------------------------------------------------------- [...] [Containments][2] activityId= formfactor=2 immutability=1 lastScreen=0 location=4 plugin=org.kde.panel wallpaperplugin=org.kde.image [Containments][2][Applets][20] immutability=1 plugin=org.kde.plasma.systemtray [Containments][2][Applets][20][Configuration] SystrayContainmentId=21 [...] [Containments][21] activityId= formfactor=2 immutability=1 lastScreen=0 location=4 plugin=org.kde.plasma.private.systemtray wallpaperplugin=org.kde.image [Containments][21][Applets][22] immutability=1 plugin=org.kde.plasma.clipboard [Containments][21][Applets][23] immutability=1 plugin=org.kde.plasma.devicenotifier [Containments][21][Applets][24] immutability=1 plugin=org.kde.plasma.notifications [Containments][21][Applets][25] immutability=1 plugin=org.kde.discovernotifier [Containments][21][Applets][26] immutability=1 plugin=org.kde.plasma.networkmanagement [Containments][21][Applets][27] immutability=1 plugin=org.kde.plasma.battery [Containments][21][Applets][28] immutability=1 plugin=org.kde.plasma.mediacontroller [Containments][21][Applets][29] immutability=1 plugin=org.kde.plasma.bluetooth [Containments][21][Applets][30] immutability=1 plugin=org.kde.plasma.volume [Containments][21][ConfigDialog] DialogHeight=1320 DialogWidth=1760 [Containments][21][General] extraItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.bluetooth,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.volume,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard knownItems=org.kde.discovernotifier,org.kde.plasma.networkmanagement,org.kde.plasma.devicenotifier,org.kde.plasma.bluetooth,org.kde.plasma.battery,org.kde.plasma.notifications,org.kde.plasma.volume,org.kde.plasma.mediacontroller,org.kde.plasma.clipboard [...] -----------------------------------------------------------------------
