I did not change any settings. I installed yesterday's builds of rockbox, rockdoom, and the freedoom wad on a new 80g ipod.
The menu prior to the game screen works fine.
The game screen loads, and appears to look correct, and there is animation of the character space on the bottom bar.
However, once in the game screen, no buttons work anymore. In fact, I cannot even return to rockbox menus without rebooting (must hold down select/menu for 10 seconds).
So, I tried also setting the keys using the rockdoom menus. However, that did not help any.