I am using x2go under Windows 7 with the latest VcXsrv. I connect to an Arch server and mainly using Emacs. In Emacs there are shortcut keys like Ctrl+Alt+A and Ctrl+Alt+K. But it seems like Emacs does not aware of these keys.
I found I need to change the default shortcut by changing the ~/.x2go/config/keystrokes.cfg
<!DOCTYPE NXKeystroke>
<keystrokes>
<keystroke action="close_session" Control="1" AltMeta= "1" Shift="1" key="F4" />
<keystroke action="switch_all_screens" Control="1" AltMeta= "1" key="F11" />
<keystroke action="minimize" Control="1" AltMeta= "1" key="F4" />
<keystroke action="resize" Control="1" AltMeta= "1" key="F10" />
<keystroke action="defer" Control="1" AltMeta= "1" key="F3" />
<keystroke action="ignore" Control="1" AltMeta= "1" key="F12" />
<keystroke action="force_synchronization" Control="1" AltMeta= "1" key="F5" />
<keystroke action="debug_tree" Control="1" AltMeta= "1" key="F6" />
<keystroke action="regions_on_screen" Control="1" AltMeta= "1" key="F9" />
<keystroke action="test_input" Control="1" AltMeta= "1" key="F1" />
<keystroke action="deactivate_input_devices_grab" Control="1" AltMeta= "1" key="F2" />
<keystroke action="fullscreen" Control="1" Shift="1" AltMeta= "1" key="F10" />
<keystroke action="viewport_move_left" Control="1" Shift="1" AltMeta= "1" key="Left" />
<keystroke action="viewport_move_up" Control="1" Shift="1" AltMeta= "1" key="Up" />
<keystroke action="viewport_move_right" Control="1" Shift="1" AltMeta= "1" key="Right" />
<keystroke action="viewport_move_down" Control="1" Shift="1" AltMeta= "1" key="Down" />
</keystrokes>
Even after doing this, the Ctrl+Alt+A does not work still. But it seems this file actually take effects. Because the Ctrl+Alt+F does not work like before.