brightness key don't work

[collinm]

hi,

i installed opensuse 11.2 rc2 on a sony vaio VGN-C240E

i use kde 4

my brightness key don't work, xev seem to recognize thees keys...

KeyRelease event, serial 34, synthetic NO, window 0x4600001,
    root 0x10b, subw 0x0, time 39518976, (-503,636), root:(88,661),
    state 0x0, keycode 232 (keysym 0x1008ff03, XF86MonBrightnessDown), same_screen YES,                                                                         
    XLookupString gives 0 bytes:                                                
    XFilterEvent returns: False                                                 

KeyPress event, serial 36, synthetic NO, window 0x4600001,
    root 0x10b, subw 0x0, time 39519954, (-503,636), root:(88,661),
    state 0x0, keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp), same_screen YES,                                                                           
    XLookupString gives 0 bytes:                                                
    XmbLookupString gives 0 bytes:                                              
    XFilterEvent returns: False

xbackligh work fine

any idea?