Hi
I have iMac 21 with 16 gb of RAM.
The problem im encountering is screen brightness controls do not work eather from keyboard nor from system prefrences.
Bootcamp 4.0
After i Install Bootcamp, screen brightness works only untull a next reboot, then i have to reinstall it again and it will not work any more.
Any ideas how i can fix that?
MacBook
forgot to mention,
this is the latest iMac 21 with Radeon 6750
You need to upgrade Catalyst to the November or December driver. If you have and have the problem, then look elsewhere. But do that first.
Hi
Tried that first thing. Got myself latest catalyst driver before NY, and no help. It was December driver from oficial website.
Tried again now. The same driver. The same result.
The controls do show up when i try to ajust brightness, but unfortunately nothing happens. ITs still the same: at about average, which kills my eyes at this level with global lightning around much lower.
Any other tips from anyone who has solved that problem before under same curumstances?
My Profile: Bookmarks - one of the ones recently added at top:
The reason your brightness is not working is because bootcamp isn't communicating correctly with the PRAM in your macbook. Reset your PRAM --> http://support.apple.com/kb/HT1379.
I had to figure this out the hard way after reinstalling windows and then realizing that I should of simply reseted the PRAM. Seems to be a bug in bootcamp.
Problem solved but not by what you have offered.
All i had to do is to delete rEFI from my system. It solved the problem at no time.
Thanks that information also helps. Seems like it was reported as a bug hopefully it will get fixed.
http://sourceforge.net/tracker/index.php?func=detail&aid=3393024&group_id=161917 &atid=821764
I have same problem. Control of brightness stoped working. I do not have rEFI and I reseted my PRAM (I statrted to hold Cmd-Option-R-P when starting sound sounded, holded till it sounded next two times) and nothing helped.
I have latest NVIDIA drivers.
Win7 x64 screen brightness control problem
