Comment 35 for bug 1077930

Mint 17, 64 bit.
Keyboard Layout: German (eliminate dead keys).

1. Fresh install, plus all current updates. Ctrl-Alt-t doesn't work. Ctrl-Alt-t doesn't do any action at all.

2. Press Ctrl-Alt-l. It locks the screen, which is correct.

3. Create custom shortcut via Keyboard -> Keyboard shortcuts -> Custom Shortcuts.
    Create a custom shortcut for gnome-terminal.
    Here occur several problems.
    a) When assigning a shortcut, press Ctrl-Alt-t. The displayed shortcut will be Ctrl-Alt_L. That is wrong.
        When I press Ctrl-Alt-q, or Ctrl-Alt-w, or Ctrl-Alt-q, they assigned shortcut is correctly displayed as Ctrl-Alt-q, Ctrl-Alt-w, or Ctrl-Alt-e. The wrong shortcut is displayed for Ctrl-Alt-t only.

    b) After assigning Ctrl-Alt-t, press Ctrl-Alt-t. This works. gnome-terminal will be started.
        After pressing Ctrl-Alt-l the same action is triggered as Ctrl-Alt-t, and gnome-terminal is launched again.
        Screen lock that was assigned to Ctrl-Alt-l now will not be triggered.

    c) After removing custom shortcut Ctrl-Alt-t from the list both Ctrl-Alt-t and Ctrl-Alt-l will be removed. Ctrl-Alt-t will again don't trigger any action. Ctrl-Alt-l will again trigger Screen Lock.

It seems that when assigning a custom shortcut the Ctrl-Alt-t is somehow interpreted twice: first as Ctrl-Alt-t, then as Ctrl-Alt-l.