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Frantisek
Asked: 2011-10-15 10:16:48 +0800 CST

How to unbind ALT in Lubuntu (LXDE)?

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In Ubuntu when I hovered my mouse over VirtualBox and held the ALT key, it was sent to VirtualBox OS.

However, in Lubuntu (LXDE), when I hold the ALT key, it wants to switch between desktops and I can't use the ALT key inside VirtualBox.

How do I disable/unbind the ALT in LXDE, so it works in the VirtualBox window?

lubuntu

2 Answers

  1. Best Answer

    Unlike Gnome - the keybinding and mouse binding is controlled by a configuration file created when you first login - ~/.config/openbox/lubuntu-rc.xml

    Open the file:

    leafpad ~/.config/openbox/lubuntu-rc.xml

    search for 

    <context name="Desktop">

    Just below this are the statements highlighted:

    enter image description here

    Replace A-Up with A-S-Up and A-Down with A-S-Down

    Alternatively just delete the lines below if you no longer want any ALT key mappings.

    <mousebind>....</mousebind>

    You should be able to move between desktops with ALT+SHIFT and Clicking.

    You will also note if you search for A-Up & A-Down there are various other similar mousebind XML tag situations where Alt and click are used - you could also think about changing these mappings to be consistent.

    Save the file, logout and login to test the new key-mappings

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  2. #

    ! Disable Alt key

    keycode 64 = NoSymbol NoSymbol NoSymbol NoSymbol

    keycode 108 = NoSymbol NoSymbol NoSymbol NoSymbol

    ! Enable Alt key

    !keycode 64 = Alt_L ISO_Next_Group Alt_L ISO_Next_Group

    !keycode 108 = Alt_R ISO_Next_Group ISO_Level3_Shift

    #

    Save the above on a file eg:"disalt" and => xmodmap disalt

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