Can't Adjust Brightness Using F1 and F2 Keys

My MBP was having difficulties starting up today (stalling at the grey screen w/ the Apple symbol) so I ran Disk Utility to repair, and everything seemed to be fine.
But now all the pre-set function keys are working save the F1 and F2 keys. I've tried pressing the fn keys before, but I am still not able to adjust the brightness. I also tried resetting the PRAM, but that did no good either. Currently, all the other function keys are doing their pre-set commands -- I didn't change any of them. What can I do to get the F1 and F2 keys working again?
Thanks!

My guess is that something you've installed is playing havoc with your system. When you reinstalled Lion you probably didn't do a clean install, thus the problem continued. Try creating a new user, then work in that acoount for a while. If the problem stops, you know the problem exists in your user account only. If the problem continues, its system wide and will require a clean install and reinstallation of your software.

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My guess is that something you've installed is playing havoc with your system. When you reinstalled Lion you probably didn't do a clean install, thus the problem continued. Try creating a new user, then work in that acoount for a while. If the problem stops, you know the problem exists in your user account only. If the problem continues, its system wide and will require a clean install and reinstallation of your software.

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Hi @Hayder-Hikmet ,
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Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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Hi NIdisha,
Thank you for your post, I will do my best to assist you.
I understand that you are experiencing an issue with the brightness and the fn keys. When I looked up the specifications, I see it came with FreeDos. I am providing you links, to the software and driver page for your computer,HP 15-d006tu Notebook PC Drivers and Frequently Asked Questions About FreeDOS (FAQs). Please note the compatible keyboard driver. I would suggest you uninstall and reinstall the drivers for the keyboard. I am also providing you a document on Notebook Keyboard Troubleshooting (Windows 8), that may assist you. If you would like furhter assistance, please let me know if you are still running FreeDos, or have changed the operating system.
I hope this has helped.
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

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This is a known bug in the power manager logic within fedora 15. They are testing the package before it makes officially to the repository.
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Cheers and regards,
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Can't Adjust Brightness Using F1 and F2 Keys

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