Comment 10 for bug 288265

OK, I tried the ati driver (Section "Device" Driver "ati"). OpenGL stopped working but the home key still does the same thing.

I just tried xev by itself without the sed filter suggested by the hotkeytroubleshooting page and the following output is generated when I press Home:

FocusOut event, serial 30, synthetic NO, window 0x3e00001,
    mode NotifyGrab, detail NotifyAncestor

FocusIn event, serial 30, synthetic NO, window 0x3e00001,
    mode NotifyUngrab, detail NotifyAncestor

KeymapNotify event, serial 30, synthetic NO, window 0x0,
    keys: 69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Working keys seem to generate KeyPress and KeyRelease events instead of FocusIn, FocusOut, KeymapNotify.