How to adjust external monitor brightness / contrast

I just recently bought a MacBook Pro, and I am trying to calibrate my Lacie photon20vision (not mark II) but cannot figure out how to adjust the brightness and contrast. The problem lies in that when using the DVI input on the monitor the on screen adjustments are not available. You are required to use software to adjust the levels when using the DVI on this monitor. In Windows I would just go into the driver properties and adjust and all was fine. On my mac I can choose resolution and err, that's it.

Hi
I am not too sure if I get to the Windows because screen is damaget so much you cannot see anything, but bo matter what I do external monitor is in power safe mode. And I know for sure the monitor is good - tried on different system and it works.
The whole idea is I do not need to use this laptop as portable device, I was planning to connect external monitor, keyboard and mouse and use it as office CPU.

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Adjusting second monitor brightness?

I'm currently playing around with a dual-monitor setup with my laptop and a crappy dell monitor, using xinerama :
$ xrandr --output LVDS1 --mode 1280x800 --output VGA1 --mode 1280x1024 --right-of LVDS1
The only thing is that when I set the brightness, using either /sys/class/backlight/acpi_video0/brightness or xbacklight, only my laptop screen is affected. I noticed both screens have the same $DISPLAY variable so I can't use that one to maybe choose one of the screens with xbacklight -d option. Is it not possible to adjust the external monitor brightness other than physically pushing the buttons on it? Please point me in some direction. Thanks

Probably not what you want but redshift has a "-b" (brightness) option and is supposed to handle multiple monitors. (redshift will not tell the monitor to change its brightness, but rather tell the graphics card to lower the brightness... for a different result I suppose.)
Edit: the command line would look something like:
redshift -l 45:5 -t 6500:6500 -b 0.5
Last edited by stqn (2011-08-14 14:59:04)

How do I configure the brightness, contrast and colour settings of the built-in HD Camera on iMac?

I have recently purchased an iMac after making the switch from PC.
I am struggling to find an app, or settings configuration where I can modify the brightness, contrast, color and white balance settings for the built-in HD camera. The online manuals didnt give me any answers so I thought I would turn to the communities pages for some help.
The room where the iMac is situated has a light behind me and I am facing the wall so not much light in front of me except the ambient light from the screen. Friends on FaceTime, Skype etc. say that the picture from the built-in camera is too dark and difficult to make out my face clearly. How can I fix this?
Any and all help is most welcome.
Thanks
UKRichard

I would move it if it weren't the main room light that is fixed to the ceiling. Not remodelling my house just for the iMac camera. On my old PC all the webcams came with utilities to adjust these settings, I am surprised Apple dont have something similar for free.
I did see another post about iGlasses here, but not sure I want to pay $10 just to adjust my camera settings
Message was edited by: ukrichard

How big an external monitor can i plug into the X60?

I will be running Serato Scratch Live SL3 DJ software on my X60 and it would be nice to have a little extra sceen area for the display. How big of an external monitor can I plug into my X60? What can the built in graphics card handle?
Thanks!
(best notebook I have ever owned btw! light, strong, stable)

i have tried 24 inch with WUXGA resolution.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

U110 How to Retain External Monitor Resolution

I'm trying to help someone with an IdeaPad U110 and an external monitor. The Lenovo allows me to login with an external keyboard and monitor but as soon as it boots Windows, the external monitor goes dark and I have to choose FnF3 each time to re-enable the external monitor and then reset the resolution to 1680 X 1050. Isn't there a way to get the Lenovo to retain these settings so I don't have to do this each time I boot it up? THANKS!!

Hi JLNH,
Welcome to Lenovo Community Forums!
Please try these steps.
1 – Click the Start button.
2 – Click Control Panel.
3 – Click Appearance and Personalization.
4 – Click Adjust screen resolution.
Now once you have the resolution page
1 Select your exrernal monitor
2 Set the display type to duplicate
3 Place a check
Restart the computer and check if it remains on.
Hope this helps
Cheers!

Broken iMac Screen; How To Attach External Monitor?

I have an intel 17" iMac and the screen is broken. How can I attach and use just the external monitor as the main monitor? Thanks.

For a DVI monitor, you will need a Apple Mini-DVI to DVI Adapter and a DVI-D cable.
For a VGA monitor, you will need a Apple Mini DVI to VGA Adapter and a VGA cable.
Then once the monitor is hooked up, go to: Apple > System Preferences > Displays and turn Mirroring Off. Then go to the Arrangement tab and drag the menu bar from the iMac display to the connected monitor.

How to use external monitor with laptop closed

My external monitor goes to sleep when i close the Macbook Air lid. How do i stop that from happening?

Mac notebooks: How to use your computer in closed clamshell ...

How to setup external monitor?

I know it's been asked numerous times before, but I can't find the solution I'm looking for.
I'm running a dual 2.0 powermac g5, with dual 20" monitors for editing, and I'd like to hook up an external televison that ONLY shows the canvas in FCP 5.
Here's the catch: I don't want to have to go through a camera to do this.
There has to be an easy solution here... when I was in college, they had it setup that way, but they were on PC's and Premiere. Is going through a camera or a dv to analog converter box the ONLY way to do this?? How could it be so easy on a PC, and difficult on a mac. That just doesn't make sense.
I'm sick of doing color correction, then having to burn to dvd, then going to watch it on the big screen just to see that the colors are totally different, and starting the whole process over again till I get it right.
thanks -brown

I pretty sure that the PC's at school DID NOT go through a converter box, and I'm positive they didn't go through a camera. If I remember correctly, it was just an audio/video cable that came directly out of the computer, and directly into the external monitor. Then it was as simple as setting it up in Adobe Premiere to just show the "canvas".
I just don't see why mac would make it difficult. Seems to me that it should be a top priority for them to make it as simple as connecting a cable. Doesn't every editor want an external ntsc/pal monitor to view thier stuff?? and doesn't apple get a lot of thier sales from post production people??
I don't get it. Oh well... I guess I'll put some money aside for the converter box.
Any other ideas still welcome. I read a post in hear about the "screen spanning doctor" and I think someone said they got it to work that way... but it wasn't perfect.
-brown

How to get external monitor to obey Energy Saver settings

I have a 23 inch Apple Cinema Display connected to a 2010 15 inch 2.8 GHz i7 MacBook Pro running Mac OS X (10.6.5). I'm running the laptop in clamshell mode. Everything is working fine, but for one thing. For some reason the external display does not obey the Energy Saver Control Panel settings. I have the Energy Saver Control Panel set up so the laptop never sleeps but the display is set to sleep after 5 min. of inactivity. Unfortunately the external monitor never sleeps.
Anybody know how to get only the external monitor to sleep in clamshell mode?
Thanks…
Dragon Dictate in use. Occasionally mistakes are made. I correct the ones I notice…

Basically, reinstall the Boot Camp video drivers manually and if that doesn't work then go to the AMD/Radeon website and install the Windows drivers directly for your video card model.
If you want to do a search you will find others that have pretty good luck doing it either way.

Satellite P300 - screen is broken - How to enable external monitor

My screen is totally broken.
I have hooked a desktop monitor to the laptop.
I need to know to disable the broken one and enable the external one.
I turn it on and im looking at one kinda glowing screen and the cracked and broken one.
I'm sure this can be do i just dont know what buttons to push because i cant see a screen.
Ihis is my first forum ever thanks!

Hi mate
I recommend using the key combination FN + F5
You can use this in order to switch to external monitor or TV output.
This key combination support several options:
- internal screen + external screen
- external screen only
- TV out
- etc...
You have to press FN + F5 several times in order to get the right output.

How to adjust the screen brighteness and contrast

I programmed a media player.
I want to adjust the brightness and contrast in the screen of movie.
How can I do it?
Thank you

programmed a media player how? JMF? There are filters or processors you could put in the chain to do whatever to the media

How do I calibrate monitor brightness?

I have been trying to re-calibrate my monitor. I set contrast control to its highest setting - no problem - but I can't calibrate brightness because the square is totally black - no lighter coloured oval visible at all, no matter where I move the slider to, and no difference in the shades round the oval - just totally black.

I, too, am having trouble with the monitor. It is very dim. I tried the above mentioned process but nothing changed. One day it was bright and the next time I opened the lid, dim. I have to strain to see the words I'm typing now. Any help is appreciated.

How to measure/set monitor brightness with specific reference

My prints come out dark; printing advice suggests the i-Mac monitor is quite bright and to set brightness at 120cd; however, the i-Mac brightness function only offers a 1-10 scale with no reference. What is the equivalent of 120 on in i-Mac, or is there another function that allows me to specifically identify a 120cd setting?

What is the color profile of the image files that print dark? If they are Adobe RGB that could be the reason as that profile does muddy up prints to ink jet printers. Otherwise try calibration the monitor thru the color portion of that preference pane.
You might look at the printer settings as I have had more success in managing color thru them than adjusting the brightness of the monitor. What printer do you have? What app are you printing from?

How to reproduce the new brightness & contrast effect from photoshop?

hello
i've made a composition in photoshop and imported it to AE. among other layers, it had a "brightness and contrast" adjustment layer.
since photoshop cs4 (i think), the brightness and contrast has changed, and instead of uniformly adjusting the brightness of each pixel, it looks at the whole image and tries to move the brightness of pixels in a more considerate and smart way (i think). anyway its very different.
thing is, that in AE, the "brightness and contrast" effect stayed the same, so when importing the composition with all the adjustment layers, the image looked completely (disasterously) different.
in photoshop i've noticed the checkbox "use legacy". when checked, it made the adjustment layer do the same thing it did in AE (which came out horrible). i tried to work on it for an hour to produce an effect even remotely similar to the one i had without the legacy, and gave up.
so,
is there any way - hidden options, combinations of several adjustment layers, third party plugins - anything, in AE, that could reproduce the new photoshop way of controlling brightness and contrast?
thanks,
michael
photoshop and AE both cs5, 64bit, windows

Paul,
can you show with a screenshot what you are trying to do? Also... to assist with terminology...
what you are calling "reproduce" is, in Numbers and other spreadsheet jargon, called referencing a cell.
I think what you are saying is you ALWAYS (even if you add a new row) want to refer to the same cells location.
To do this you should the function INDIRECT() like this:
row 1 us a header in this example and:
C1=INDIRECT("A2")
this notation means in cell C1 type or paste the formula "=INDIRECT("A2")" without the double quotes then hit enter
now added a new row:

Satellite A200-1AE: How to set external monitor as main display on Win XP

Model: A200-1AE
OS: XP SP2
I wish to use the external display in Windows XP. It would be necessary that the external display was the main thing, and desktop expansions occurred on the laptop display. The driver, downloaded from your site do not allow to make it... Though in Windows Vista such possibility is.
How it is possible to solve my problem?

Hi
As far as I know this is not possible. In my case this option is grayed out!!!
But maybe its possible on your notebook. In such case you should access the graphic card properties. Then go the last tab called Settings.
There you should mark the display 2 and should enable the option called use this device as the primary monitor.
But if this option is not available you will be not able to set this!!!!
Best regards

How to adjust external monitor brightness / contrast

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