Problem with laptop after upgrading to 7.10

[Anom]

Hi all,

yesterday i just upgraded my feisty to gutsy using the alternate cd.
And I also have update all the package.

But right now some of the key in my laptop doesn't work right. That
key is fn+up-arrow and fn+down-arrow for changing screen brightness,
and also fn+right-key and fn+left-key for change the speaker volume.

no change at all when i press those keys. It is working when I'm still
using feisty.

fyi, I'm using lenovo 3000 y400.

TiA

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