Niels de Vos wrote:

Jiri Kosina wrote:

quoted

On Tue, 6 Jan 2009, Niels de Vos wrote:

quoted

on my HP/Compaq nc6400 there are three keys (info, presentation and
battery) not directly recognized. If I press any of the keys, I get:

atkbd.c: Unknown key released (translated set 2, code 0xd9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e059 <keycode>' to make it known.

[ ... ]

quoted

Where should I start looking for creating a patch for solving problems 
of this kind? There seem to be quirks in atkbd.c, but I think they are 
used for some other workarounds.

Please see 
http://people.freedesktop.org/~hughsient/quirk/quirk-keymap-index.html

Just for the record:

Okay, for these (and a lot more) keys I (and you) need at least
hal-0.5.10 as said in the link above from Jiri. The keys supported by
hal are available in the 30-keymap-*.fdi files from the hal-info git:

http://cgit.freedesktop.org/hal-info/tree/fdi/information/10freedesktop

I hope this helps people with the same questions and problems.

Thanks for your help,
Niels