Hi Meanie,
Fn+num keys are disabled if you have kbd option in the X server options which is required if you want to enable stickykeys...
I found a solution to have both Sticky Keys and Fn+num!
For those that are interested in sticky keys and FN-1 .. FN-4 the workaround to use both is:
I used the instructions from Meanie to enable sticky keys.
To enable Fn-1 to Fn-4 again after enabling sticky keys I made the
following changes:
In /etc/X11/kb/akita.xmodmap I changed the lines for the keys 1 to 4 to
keycode 49 = 1 exclam F13 F1
keycode 50 = 2 quotedbl F14 F2
keycode 51 = 3 numbersign F15 F3
keycode 52 = 4 dollar F16 F4
and in /home/root/.config/openbox/rc.xml I added
<keybind key="F13">
<action name="Execute"><execute>xrandr -s 0</execute></action>
</keybind>
<keybind key="F14">
<action name="Execute"><execute>xrandr -s 1</execute></action>
</keybind>
<keybind key="F15">
<action name="Execute"><execute>setfl-wrapper</execute></action>
</keybind>
<keybind key="F16">
<action name="Execute"><execute>setfl +</execute></action>
</keybind>
Restarted X and voila - sticky keys and Fn-num works
I did only minor tests until now to but it seems to work.
Now if I get Fn-Tab for Capslock to work all my keyboard issues are solved.
(Note: setfl-wrapper is a script from weeXpc to ensure, that you can't switch off the screen using Fn-num)
regards
Bernd