How are keyboard keys for screen brightness handled?

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https://bbs.archlinux.org – I think the OP might be asking how to change the backlight when not using X... at least I think so.  With my new thinkpad, I believe that my backlight keys are actually controlled by the thinkpad_acpi module.  I would have said that the kernel did not handle this just a couple months ago, but that was before I realised that there are specialized acpi modules for many different harware vendors.So I think that if this is what you are asking, you are going to have to dig into the lowest levels of the system. WonderWoofy https://bbs.archlinux.org/profile.php?id=60312 2012-0 (HowTos)