Thanks Chris
So turning the screen down to zero brightness will turn off the backlight yes?
----- Original Message -----
From: Chris Blouch
To: [email protected]
Sent: Tuesday, July 07, 2009 8:03 PM
Subject: Re: Turning off MacBook screens?
As has been mentioned, the video card is still driving the LCD display with
the backlight off, but the bulk of the energy cost is the backlight, not the
LCD. This is why LCD displays such as clocks or thermometers can run for months
off a little battery. So while you're not going to hit 0% energy use, it's
going to be a lot less than having some backlight on.
CB
Justin Harford wrote:
Yes it turns off the backlighth completely, but the pixels are still
showing your desktop, making it discernable if for example you are sitting out
in the sun.
On Jul 6, 2009, at 7:40 AM, James & Nash wrote:
No I don't think you are Scott. However, I did read someone that turning
down the screen brightness to zero actually turns off the backlight on the
screen - effectively turning it off. I just wondered if this was possible as I
have no need for a screen bu from waht I remember turning down the screen
brightness increased batery life dramatically.
Thanks
James
----- Original Message -----
From: Scott Howell
To: [email protected]
Sent: Monday, July 06, 2009 2:04 PM
Subject: Re: Turning off MacBook screens?
James, why is that a shame? Surely you recognize that turning off the
screen would generally not make a lot of sense. These aren't machines designed
exclusively for the blind, so turning off the screen would only benefit those
of us who would not typically use the screen. It just isn't one of those
features Apple or any other computer manufacturer would really consider. You
have the option to turn the screen brightness down to the point where no one
could read it and that alone would help conserve battery life. However, to say
it is a shame seems a little odd when you consider the larger scope here. I am
not sure what purpose this feature would serve even on a lInux machine, but
maybe there is something I'm missing here beyond the possible extension of
battery life.
On Jul 6, 2009, at 8:43 AM, James & Nash wrote:
Thanks Scott,
That is a real shame I think.
Take care
James
----- Original Message -----
From: Scott Howell
To: [email protected]
Sent: Monday, July 06, 2009 10:46 AM
Subject: Re: Turning off MacBook screens?
Screen curtain does not turn the screen off. If you turn the
brightness down as far as it will go, that will help save your battery, but I
do not believe you can turn the screen off entirely-in other words cut power to
it.
On Jul 6, 2009, at 5:38 AM, James & Nash wrote:
Hi,
Am I corect in thinking that the Linux commandline options will
work under Mac OS X? If so, if I could find out how to write shell scripts or
whatever they are called do you think they would work under Mac OS X? Also, do
the Screen Brightness and Screen Curtain options actually turn the screen off?
Take care
james
----- Original Message -----
From: Alex Jurgensen
To: [email protected]
Sent: Monday, July 06, 2009 5:22 AM
Subject: Re: Turning off MacBook screens?
Hi,
James,
Just continue with Screen Brightness and Screen Curtain
together. I should write a CLI script for this.
Regards,
Alex,
On 5-Jul-09, at 2:39 PM, James & Nash wrote:
Hi folks,
This might sound like an odd question, but as i cannot see
the screen I was wondering if there was a way to turn it off? I know that you
can turn the screen brightness right down and use the Screen Curtain which
effectively does this which was what I used to do. But I was wondering if there
was a solution via the Command Line. In Linux, this can be achieved by
something like dpms off. This keeps the screen off until you either use dpms on
our restart the pc.
I have tried turning off my laptop screen in Windows, and JFW
doesn't like it too much. As VO is built directly into the system i assume it
doesn't use video intercept but instead gets its access info direct from the
Mac OS X kernel?
Thanks for any help that you can provide
Thank you for taking the time to read this.
Take care
James
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