I will make my comments on each models :
*** VGN-BZ12XN ***
1- you have 2 backlights interfaces : one from sony-laptop, the other from
acpi, you may have backlight control for it through acpi, or an applet.
2- you have the "sony-laptop" module, correctly associated in hal : "sony vaio
jogdial" & "sony vaio keys".
So, that means either "hal" informations to associate FN-keys are wrong, or
sony-laptop module does not support your model.
Your keymaps are (extract from your file) :
input.keymap.data = {'0x06:mute', '0x07:volumedown', '0x08:volumeup',
'0x09:brightnessdown', '0x0a:brightnessup', '0x0b:switchvideomode',
'0x0e:zoom', '0x10:suspend'} (string list)
Please, verify that the informations are correct, with this link :
http://people.freedesktop.org/~hughsient/quirk/quirk-keymap-modules-data.html#sony
*** VGN-Z21WN_B ***
1- You have a Geforce "GeForce 9300M GS", so you won't have backlight control
on it (the backlight control on geforce 8 is still experimental)
2- same second point as "VGN-BZ12XN"
*** CR-220E ***
1- you have 3 backlight interfaces : 1 sony, 2 throught acpi
2- same second point as "VGN-BZ12XN"
Unfortunately, if nothing is wrong with the 2nd point, that probably
means that new vaios FN keys are different from the existings ones, in
that case, I don't have the necessary knowledge to deal with it, you
should contact Mattia Dongili, writter of the sony-laptop module. Here
is his wiki link : http://www.linux.it/~malattia/wiki/index.php/Sony-
laptop
--
Fn keys on VAIO don't produce keystrokes nor ACPI events
https://bugs.launchpad.net/bugs/251665
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