Alex Mayorga Adame, thank you for providing the requested information.
As per http://esupport.sony.com/US/p/model-
home.pl?mdl=VPCCW1FFXL&LOC=3#/downloadTab a update is available for your
BIOS (R0210Y5). If you update to this, does this change anything?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-nouveau in Ubuntu.
https://bugs.launchpad.net/bugs/551668
Title:
Fn+F5 and Fn+F6 don't modify brightness on Sony VAIO VPCCW (GT 230M)
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https://bugs.launchpad.net/nouveau/+bug/551668/+subscriptions
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