All the answers I've been able to find are for LXDE but I need the answer for LXQT.

What command/DBus message opens the main menu? Clicking the existing entry in the Shortcut Keys utility only lets me enable/disable it, not modify the shortcut or see what command it runs.

Is there a way to see what command the existing entry runs? The documentation doesn't seem to have a configuration file location.

  • 1
    So you don't want the default Super key to open LXQt's menu? You want to set it to something else?
    – DK Bose
    Commented May 26, 2020 at 4:21
  • I could change it to Meta+Space through the GUI. What difficulty are you facing?
    – DK Bose
    Commented May 26, 2020 at 4:26
  • Looks like it is that simple. Fro some reason I thought that since I can't edit the command, I can't change the shortcut key either. Just curious though, what is the command that gets executed by this binding? Commented May 26, 2020 at 5:04
  • I'll see if I can dig that out for you.
    – DK Bose
    Commented May 26, 2020 at 5:09
  • Hmmm... look in ~/.config/lxqt/globalkeyshortcuts.conf for path=/panel/mainmenu/show_hide and look in /usr/share/lxqt/lxqt-panel/mainmenu.desktop which has Type=Service and ServiceTypes=LXQtPanel/Plugin. Neither indicate a conventional command! Sorry I can't help more but I'll pass on your query to guiverc who is part of the Lubuntu team.
    – DK Bose
    Commented May 26, 2020 at 5:33

2 Answers 2


In Lubuntu 20.04, pressing the Super_L key, aka the left Meta or Windows key, launches the LXQt menu.

To change that, use Menu > Preferences > LXQt Settings > Shortcut Keys.

In the GUI that opens,

GUI for changing shortcuts in LXQt

scroll to the item having the description Show/hide main menu. Select that line by left-clicking on it and then click on Modify near the top right.

Click in the box Shortcut box showing Super_L and type your preference. Then OK and close the GUI. You're done.


The answer does not allow you to change it to another modifier, though - the original binding is "special" as it is not possible to enter that in the UI. However one can use xmodmap to make any key into the Super_L key. For example, I have swapped the "Search" key (which acts as Super on my Chromebook) with the right Control key, so that I get Search acting as Control and the right Control key acting as the menu key.

There is no need to mess with window manager configurations, as this is simply a job for xmodmap. On lubuntu 21.10, I am able to do the following:

Create .config/autostart/xmodmap-autostart.desktop

[Desktop Entry]
Comment=xmodmap autostart
Exec=xmodmap $HOME/.config/xmodmap

and create .config/xmodmap

remove control = Control_R
remove mod4 = Super_L
keycode 133 = Control_R
keycode 105 = NoSymbol
add control = Control_R
keycode 105 = Super_L
add mod4 = Super_L

The trick is using NoSymbol as I am trying to swap right control with the super key, but you can't do it all at once.

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