Turning brightness to 0 does turn off the display.

Ricardo Walker
rica...@appletothecore.info
Twitter:@apple2thecore
www.appletothecore.info

On Aug 15, 2012, at 5:33 PM, Christopher-Mark gilland <clgillan...@gmail.com> 
wrote:

> Is there a way to literally turn the display off?  I don't mean set 
> brightness to 0 or turn on the curtain.  I literally mean turn off the 
> display completely.
> 
> This is a mid 2010 stocked 13 inch white macbook.
> 
> Chris.
> 
> ----- Original Message ----- From: "Chris Blouch" <cblo...@aol.com>
> To: <macvisionaries@googlegroups.com>
> Sent: Wednesday, August 15, 2012 5:19 PM
> Subject: Re: Technically speaking, How Does Screen Curtain Actually Work?
> 
> 
>> I should say that turning down the brightness on the Mac does make its 
>> battery last longer, but that turning it off is the best and that screen 
>> curtain seems to have no or minimal impact on battery life.
>> 
>> CB
>> 
>> On 8/15/12 2:55 PM, Mike Arrigo wrote:
>>> I think it does save battery power. On IOS devices, the light on the 
>>> display is turned off, or at least on a very low setting. On the mac, I 
>>> don't use the screen curtain, instead I turn the brightness down to 0
>>> Original message:
>>>> Ok, one of my notorious "just wondering" questions.
>>> 
>>>> I've heard many discussions about whether screen curtain saves battery 
>>>> life in laptops and the smaller devices. I'm wondering if screen curtain 
>>>> works by modifying information that's already been passed to the display, 
>>>> or whether it bypasses the display altogether. If it's used on an Ipod, 
>>>> for example, does it still use a lot of resources? Does anyone know how it 
>>>> works, technically speaking?
>>> 
>>>> Thanks,
>>>> Teresa
>>> 
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