My settings seem to be stored in Gconf. You can access these in the gconf-editor under /apps/metacity/global_keybindings or /apps/metacity/window_keybindings.
These settings are stored in $HOME/.gconf/apps/metacity/global_keybindings/%gconf.xml
and $HOME/.gconf/apps/metacity/window_keybindings/%gconf.xml
. If you'll be changing the XML directly, I recommend logging out, making changes in a virtual terminal, and then logging back in.
Sample entries in my gconf-editor (changing them here should take effect immediately):
Default values:
Name Value
switch_to_workspace_down <Ctrl><Alt>Down
switch_to_workspace_up <Ctrl><Alt>Up
Modified values:
Name Value
switch_to_workspace_down <Mod4>Down
switch_to_workspace_up <Mod4>Up
Sample entries in my global_keybindings XML:
<gconf>
<entry name="switch_to_workspace_down" mtime="1274412610" type="string">
<stringvalue><Mod4>Down</stringvalue>
</entry>
<entry name="switch_to_workspace_up" mtime="1274412607" type="string">
<stringvalue><Mod4>Up</stringvalue>
</entry>
<entry name="switch_to_workspace_right" mtime="1274412603" type="string">
<stringvalue><Mod4>Right</stringvalue>
</entry>
<entry name="switch_to_workspace_left" mtime="1274412594" type="string">
<stringvalue><Mod4>Left</stringvalue>
</entry>
</gconf>
p.s. I wonder if your troubles with the settings UI are caused by a specific driver or keyboard layout. You might try setting or tweaking the layout or keyboard model used (System > Preferences > Keyboard, Layouts tab). Also check the Options dialog on the same tab; there are some tweaks for the Alt/Win keys.
http://askubuntu.com/questions/101226/where-does-ubuntu-store-its-keyboard-shortcut-configuration – Ciro Santilli 新疆改造中心法轮功六四事件 – 2016-03-15T10:12:15.810