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I've extracted HDD with existent 12.04 installation out of one laptop and plugged it in another laptop. Then I upgraded kernel from 3.2 to 3.8. Now I can see that some hardware features does not work as expected.

For example laptop display brightness can be decreased by one level only. (by fn+special key combination pressing). This worked good on previous laptop and I was able to increase/decrease display brightness by several times.

Another problem is my network card, which is disabled by default and after returning from suspend mode whereas wifi card is enabled.

One more issue is touchpad right button, which does not invoke context menu rendering as right mouse button does.

I'm not sure this can be fixed at all, but I have an assumption that some of current issues I'm experiencing now wouldn't reproduce in case of clean system installation.

Is it possible to force all system drivers re-installation/re-initialization?

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