I've created a patch to fix the problem where it was impossible alt-tab (or use any other window manager key combos) to switch away from TDM. This patch works for both windowed and full screen modes.
- It will no longer grab exclusive input of the keyboard by default. This allows the window manager to process the keyboard input and do things like alt-tabbing. To get the old behaviour set 'in_grabkeyboard' to 1 (Exception: Full screen console will now ungrab, previously only windowed console would ungrab.).
- In order to get the above behaviour to work in full screen mode, full screen mode initialisation has been modified so that it asks the window manager to handle the window as a full screen window. To get the old behaviour set 'v_nowmfullscreen' to 1 (this will force it to grab the keyboard input too, regardless of 'in_grabkeyboard' or other conditions).
I've only tested it on Linux Mint 17.2, 64 bit.