Comment 2 for bug 212790

No the keys don't produce acpi-events.
Instead they produce scancodes that are not recognized by the userspace (see http://people.freedesktop.org/~hughsient/quirk/quirk-keymap-scancodes.html)

There are two possible solutions:
1. add some lines to the file "samsung.hk" of the package "hotkey-setup" but this seems to be deprecated
2. make the scancodes known using "hal" by adding them to hal-fdi-file "30-keymap-misc.fdi" which is already done upstream (21hour ago ;-) ) according to http://gitweb.freedesktop.org/?p=hal-info.git;a=blob;f=fdi/information/10freedesktop/30-keymap-misc.fdi

I think the second one would be the better solution, which might be integrated automatically with the next hal-info-merge.