This post is for if you are using XFCE4 (xubuntu-desktop) and you’re having issues with auto completion. This is also taking under consideration that auto completion is working in SSH.
If it’s not working for either try
sudo apt-get remove autocompletion && sudo apt-get install autocompletion
I the problem still persists then, try using CTRL+I for the time being then you need to open up a session whether it being ssh or rdp and do the following:
edit
~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml
find the line
<property name=”<Super>Tab” type=”string” value=”switch_window_key”/>
and change it to
<property name=”<Super>Tab” type=”empty”/>
reboot or whatever and then tab will work properly!
I have no idea why but when using vnc this file seems to override tab’s normal behaviour and makes it into a switch window key.