Description of problem:

I use KDE and have set up xkb so that the Alt keys send Alt and the Win keys send Meta.   When typing "Meta-x" (for example) in emacs I just get "x" instead of the expected behaviour: the Meta key is ignored.

xev shows that the four keys all transmit the right keysym:

KeyPress event, serial 190, synthetic NO, window 0x7200001,
    root 0xb6, subw 0x0, time 26219164, (149,45), root:(1649,480),
    state 0x0, keycode 133 (keysym 0xffe7, Meta_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 190, synthetic NO, window 0x7200001,
    root 0xb6, subw 0x0, time 26248916, (2,41), root:(1502,476),
    state 0x0, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 190, synthetic NO, window 0x7200001,
    root 0xb6, subw 0x0, time 26271820, (-2,88), root:(1498,523),
    state 0x0, keycode 108 (keysym 0xffea, Alt_R), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 190, synthetic NO, window 0x7200001,
    root 0xb6, subw 0x0, time 26293988, (-2,83), root:(1498,518),
    state 0x0, keycode 134 (keysym 0xffe8, Meta_R), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False


Version-Release number of selected component (if applicable):
   emacs-23.3-8.fc16.x86_64


How reproducible: Always


Steps to Reproduce:
1. Start up emacs in X mode
2. Ensure (using xev) that the Win keys send meta
3. Hit "Meta" and "x" together in emacs
  
Actual results:
  An "x" is inserted in the current buffer


Expected results:
  The ":" prompt should be display for [(meta) x]

Additional info: