Hey, I have the same problem in konsole on my notebook with Debian testing installed. It doesn't have an NVIDIA video card and I'm not using neo2.
/etc/defaults/keyboard: XKBMODEL="pc105" XKBLAYOUT="us" XKBVARIANT="" XKBOPTIONS="" BACKSPACE="guess" And I have a somewhat exotic ~/.Xmodmap: keycode 37 = Control_L keycode 64 = Alt_L keycode 93 = Meta_L keycode 94 = z Z bar brokenbar keycode 105 = Meta_R keycode 108 = ISO_Level3_Shift keycode 133 = Super_L keycode 135 = Multi_key keycode 205 = clear lock clear control clear mod1 clear mod3 clear mod4 clear mod5 add control = Control_L add mod1 = Alt_L add mod3 = Meta_L Meta_R add mod4 = Super_L add mod5 = ISO_Level3_Shift m.