Comment 28 for bug 280646

Since the num lock bug is old, I'm trying to work out why the brightness keys don't work when that gconf key is set.

When numlock_on is false, gnome-power-manager sees KeyPress events for the brightness keys in gpm_button_filter_x_events and responds.

When numlock_on is true, gpm_button_filter_x_events is never even called.

The callback is registered like this:

                /* use global filter */
                gdk_window_add_filter (button->priv->window,
                                       gpm_button_filter_x_events, (gpointer) button);