Screen nice and bright when using power thru the adapter

Hi there
I am a new macbook user and I am wondering if this is 'normal'. I have two questions about the screen on my macbook.
When I use the macbook while it is plugged into the wall outlet my screen is nice and bright. If I unplug it, and the battery is fully charged, the screen dims. If I plug it back into to outlet the screen brightens. Is this "normal?"
Second question. If I am near a lamp or other light source my screen brightens. If the lamp is turned down to a dimmer setting, the screen on my mac dims. Is that normal?
I'm sorry if these questions sound ridiculous

Both of Your questions concern System Preferences, the first one You can set in Energy Saver, tag Battery.
The second You can control in System Preferences, Monitors panel.

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Hi guys!
I am running Adobe Premiere Pro CS6 on Windows 7 (Ult) on a machine equipped with NVidia GTX 780M (4 GB VRAM) graphics card. The source and the preview monitors are both black if I select GPU accelerated rendering. There is a yellow bar above the timeline clips, I can hear the sound tracks, but there is no image. If I choose the Software Only rendering (CPU) then I do see the image as well, but the real-time playback and rendering times are awful!
At first, the application would not allow me to use the GPU acceleration using NVidia’s CUDA processing. Once I entered my video card name in the “cuda_supported_cards.txt” file in the Adobe Premiere Pro CS6 folder I was able to choose between Mercury Playback Engine Software Only and Mercury Playback Engine GPU Acceleration CUDA.
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Hi there,
As stated before, I had the same problem. Apparantly the solution for me was to check the Nvidia settings. My setup has both an onboard GPU and a Nvidia GPU (on purpose specifically for video editing and gaming). Normally the system should switch to Nvidia automatically. However, the Nvidia settings for Premiere where set to favor the onboard GPU. After changing this. everything works fine again!
kind regards. Bart

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Mal,
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When using my iMac the screen turned blue and so I turned the compute off. When I turn on again power does get to the computer but there are no chimes and the screen remains black. Any advise please. David

When using my iMac the screen turned blue and so I turned the compute off. When I turn on again power does get to the computer but there are no chimes and the screen remains black. Any advise please. David

Hello DJJOC,
Thanks for using Apple Support Communities.
To start troubleshooting this issue where your iMac's screen will not illuminate, please reset your SMC by following the information outlined below.
Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
Note: For Intel-based Xserve computers that are not responding, you can shut down locally, or by using remote commands, or by pressing and holding the power button for five seconds.
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
Take care,
Alex H.

My macbook pro won't turn on. it just stays stuck on a white screen with a little circle spinning around and around when you power it on.

my macbook pro won't turn on. it just stays stuck on a white screen with a little circle spinning around and around when you power it on. i don't know how to get it to progress past this loading page.

Resetting your Mac's PRAM and NVRAM
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Resetting your Mac's PRAM and NVRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
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When using my ipad air it keeps coming off the page I'm on or app and going back to the home screen. Also when using my ipad the screen will go white with a black apple icon in the middle for about 20 seconds then it makes a ping

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Read here:
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as title
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machine TYPE: THINKPAD T430 /2349CTO
operating system :Lenovo OEM ultimate X64 SP1
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I just order 8 calendars from iPhoto and they came to me fine. Now I need to order two more but when I go thru the process I get a message saying:unable to assemble calendar. There is a probleme with the photo with the file name"(Null)" more........ .

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OT

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If your are using IOS 4, see below.
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Screen nice and bright when using power thru the adapter

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