IMac display getting yellow when external display is attached?

Hi,
I have a problem with my IMac (27'' Mid 2010):
I have an external TV attached via MDP->DVI->HDMI cable. When I turn on the TV, the iMac recognizes it and the iMac display turns blue shortly, then the desktop returns and my TV is ready.
What I noticed: After the desktop returns, the iMac sometimes suddenly becomes "more yellow". Don't know exactly how to describe it, but I can clearly see how the desktop returns and then suddenly the imac display turns a little yellow, could also be that the display just gets a little darker (although the display brightness is the same as before). it's nothing that really disturbs me, and although I never saw the color return to normal it does (but I think only after rebooting the iMac)
anything on this? anyone else noticed that?
Message was edited by: nachdenki

Hi nachdenki
I've used both TV's and Monitors with my iMac over the years and that default iMac Profile has always looked yellow in comparison. Try one of those other sRGB, RGB Profiles or create a new Color Profile for the iMac's display.
http://www.computer-darkroom.com/colorsync-display/colorsync_1.htm
Dennis

Similar Messages

MBP display turns off when external monitor is attached

Hi there,
Over the last few days I have been trying to get Windows 7 to work with an external monitor. I am running a Mid 2012 15" Macbook Pro with a Nvidia GeForce GT 650M GPU. I sucessfully installed windows 7 in bootcamp and everything worked flawlessly until I try to connect my monitor with the mini displayport via a VGA <-> Displayport adaptor. When I connect it the monitor powers on, with the windows desktop and is responsive but the mouse dissapears and the MacBook Pro's monitor turns off. The mouse is still useable but invisible, so its very difficult to do anything. I have tried to update the Nvidia drivers as well as trying everything I can think of and haven't been able to find a solution. Has anyone else out there exerinced this, or found a solution?

Okay, so a little update. I have determined that the problem is the nvidia driver. When I roll back the driver to the "Microsoft Basic Display Adaptor" driver and connect the monitor then it behaves as excpected. The external monitor isn't detected and everything continues to work properly.
So is there anyone out there who is running a Mid 2012 15" MacBook Pro with an external monitor in either Windows 7 or 8.1? If so please let me know what your setup is and what driver version you are using. This is driving me crazy. Thanks.

HT3924 Can I use my 27"iMac late 2009 as an external display for a non apple product such as a cable box?

Can I use my 27"iMac late 2009 as an external display for a non apple product such as a cable box?

To get TV on your iMac off the cable box you would need to use an external TV tuner device such as the company ElGato is highly regarded for. I have used one of their EyeTV products for many years with my iMac to watch television shows from my Comcasst cable TV box. You can look at the models here:
http://www.elgato.com/elgato/na/mainmenu/products.en.html

HT3924 Using a 27-inch iMac (Mid 2012) as an external display?

As I have been using MacBook Pro (Mid 2010) and Mac Air (Mid 2011) for business purpose, I wanna use them working at home.
I really expected that there was new cinema display with Retina display, but there wasn't. However, New iMac looks really nice & I would love to buy it.
But Using a 27-inch iMac(Mid 2012) as an external display is one of my important required function to buy it.
What do you think? is a 27-inch iMac (Mid 2012) able to use target display mode?

there's a lot of misinformation so far here. Yes you can use all the 27-inch iMacs as external displays.
However there a few problems.
2009-2010 27-inch iMacs can only work with Apple computers that have the Mini-DisplayPort.
2011-2012 21-inch and 27-inch iMacs can only work as a display with Macs that have thunderbolt ports.
so as long as your 2011 MBA has thunderbolt, the new one will do fine. your 2010 MBP will not be able to use the iMac as a display.

Does the New Imac 21 works as an external display using thunderbolt to thunderbolt cable plugged into a MacBook Pro?

Does the New Imac 21" works as an external display using thunderbolt to thunderbolt cable plugged into a MacBook Pro?

Hi there LDIMERY,
You may find the troubleshooting steps in the article below helpful.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
-Griff W.

Can an early 2009 iMac be used as an external display?

Can an early 2009 (I think the one released in March) iMac be used as an external display? I think the late 2009 one does but not too sure about mine.
Thanks

What about this video then?
http://www.google.com.au/m/url?client=safari&ei=B6UkToG-FY2urAf99LPoAg&hl=en&oe= UTF-8&q=http://www.youtube.com/watch?v%3DGsyDlvnVYmc&ved=0CBYQtwIwAA&usg=AFQjCNG 5nKsKR5tEOGMiTNrAhDRVis0eQw

IMac cannot handle Mavericks and external display?

I am a long-time apple-user and long-time user of this wonderful forum. This is, however, the first time I have needed to ask a question of my own having been unable to find an answer on here or elsewhere. In fact, I haven't read of anyone experiencing the issues that I am.
I recently purchased a second hand Apple iMac "Core 2 Duo" 2.0 20-Inch (Al) to replace my old white one. I understand that this is the oldest iMac to be able to handle Mavericks, but I have upgraded the RAM to 4GB just to be safe. I also bought myself a lovely HP W2207H Monitor that is HDMI input and, when on Snow Leopard before my upgrade yesterday, was a beautiful extended desktop with no issues whatsoever.
Since upgrading to Mavericks, the monitor has not been working properly; but it's not any of the other, well-documented issues that I have read already. The monitor doesn't flicker, it is recognized beautifully and the resolution is spot on the native...
Right now, for instance, the monitor is working fine. However, if I was to open a new Firefox tab, or open a new application on my iMac, the monitor would go black (not to sleep or shutting down as the light remains on) for two seconds or so. It seems as if the iMac is struggling with doing something and therefore cuts the monitor feed whilst it's doing the process I have just requested. Furthermore, the iMac's fans are running quite hard despite activity monitor showing the decreased usage as Mavericks promised!
For your information: Apple iMac "Core 2 Duo" 2.0GHz 20-Inch (Al) 4GB RAM connected to HP W2207H by Mini-SP to HDMI adaptor and HDMI Cable.
I wonder if anyone could help me solve this problem on Mavericks, or will I simply need to regrade down to Snow Leopard for optimal performance of the external display?
Many thanks in advance,
Mike

hey.. the display starts up with the imac...
I'm having trouble adusting the brightness on my cinema display...
hopefully get a answer today.. I have a 24" imac

Using iMac (Target Display Mode) as an External Display for MacBook Air

I have a Mid 2010 iMac with a 2 thunderbolt ports. I now have a brand new MacBook Air (2012 Core i5 1.8GHz with 8GB RAM) with a thunderbolt port. I have a Belkin Mini Displayport Cable to connect the two. I want to use the iMac as an external monitor for the MacBook Air. I cannot seem to get this to work. Can I do this? Do I have the right cable?

You can do it but you need a thunderbolt cable to connect the two. Then just hit CMD F2 on the iMac and it will enter Target Display Mode.

Help: 2011 imac 27" won't detect External Display connected via thunderbolt to HDMI

I have an 2011 imac 27" and I'm trying to connect an Acer 23" monitor as an external display. I'm using a miniDV(thunderbolt) to hdmi cable. For some reason the computer is unable to detect the display. However when I reboot into windows via bootcamp, the display is detected and works perfectly.. Any way to force thunderbolt to detect this?

Well, weird outcome... I took the monitor back and exchanged it for a better model, better brand. The thunderbolt to hdmi cable works fine with this new monitor in osx. Thanks again..

IMac Retina 5K (2015) with 1xTDM iMac (2011) and 1x Dell External Display possible?

I have 1 x 27" iMac Retina 5K (2015), 1 x 27 " iMac (mid 2011) and a Dell P2715Q. I'd like to know if it's possible to run the 2011 iMac in Target Display Mode and my Dell as a secondary display from my 2015 iMac? My desired configuration is the 2015 iMac running two external displays. The 2015 iMac has an AMD Radeon R9 M295X 4GB Gfx card and both iMacs are running Yosemite 10.10.1
I have verified that running the 2011 iMac only via TDM works. Also running the Dell as an external Display only works (either at 4K resolution or the same resolution as the external iMac (2560x1440) via SwitchResX). With the Dell running @ 2560x1440, trying to put the 2011 iMac into TDM, causes a slow grey screen, then some display artefacts when coming out of TDM. Going in and out again appears to refresh the screen. But it doesn't seem to work.
I was wondering if anyone else has a similar configuration working and if so what settings or configuration changes to make?
Thanks!

I stopped by the Apple Store yesterday, and they were nice enough to try the Screen Sharing solution with me.
Indeed, we were able to share the screen of a MacBook Pro and display it on the iMac Retina 5K over a Thunderbolt Bridge network. (should also work over WiFi)
As I expected, (based on the native resolutions) the MBP window maxed out at about 55-60% of the height and width of the 5K display.
I didn't try experimenting with lower resolutions on the 5K.
I'd actually be OK with that solution except as we increased the font sizes, (e.g. 48 pt) we noticed a *lot* of ghosting around the characters.
I will have to try it again at normal font sizes and decide if that is something I can work with all day long.
Otherwise, I am leaning towards buying last year's iMac, which kinda' grates me the wrong way.
Thanks,
n8

Imac 17" core duo 1.83ghz broken display how to connect external display?

Hi there! I have a 2006 Imac 17" core duo and the screen broke by accident. The repair costs are extremely high and thus I was thinking about buying an external display and hooking it up to the imac. Firstly, would such a thing be possible, and if indeed possible how would one go about setting it up?

Try F7

Mouse skipping problem when external display connnected

I recently purchased a Macbook, and I connect it to a Dell 3008 display using the mini DisplayPort to dual-link DVI adaptor. My issue is that when the Dell is connected and in use, the mouse pointer skips across the screen when I move it, like something is interrupting the input for a very brief period, and it's being interpolated wrongly when the input comes back.
The problem doesn't occur when the external display is disconnected, and it happens with wired USB, wireless USB and wireless Bluetooth mice.
No adjustment of mouse sensitivity options seems to fix it, and the interruption in the pointer movement seems to happen at semi regular intervals of between 5 and 10 seconds apart, although I can't be 100% sure.
Interestingly, it doesn't happen when I connect a lower resolution external display using the same adaptor. So it only happens at 2560x1600. I'm wondering if it's a problem with a hardware accelerated mouse cursor and the NVIDIA graphics driver.
Anyway, it's a real barrier to me using the Macbook, so hopefully someone has a solution.
Thanks!

Same problem here: wireless MS Laser Mouse 6000, either a samsung or LG external display connected via mini adaptor. Have the MS intellipoint drivers installed. It began to happen about a fortnight ago, and seemed to coincide with the Java update 4/Bluetooth Firmware/ Safari update applied on 24/6. This may have been around the time I changed display preference to 'best performance', so could well be a graphics driver issue?
In my case, it tends to happen in certain spots on the screen, and the likelihood of a skip seems to depends on the speed I'm moving the pointer. Faster = more likely.
It's messing up my tanking in warcraft something terrible.

Mouse cursor problem when external display connected

When my external Apple display is connected to my MacBook Pro (Retina, Mid 2012, 10.10.2) the cursor jumps to a spot on the external display and will not release from it. I move the cursor anywhere and it jumps back to that original spot. Cursor operates normally when the external monitor is not attached. I've used the monitor for a few years with no problem, but this started just recently. I do not use the external monitor daily and I cannot recall doing anything that might have triggered this problem. Any ideas on a fix? Thanks.
Bill

Just an update to close this. Call Apple Support. An advanced support tech walked me through several procedures. Eventually, the problem disappeared after deleting a bunch of plist files and startup items. Which particular file caused the problem we don't know. But problem gone and I will monitor going forward. Hopefully it was a one-time corruption of one of the preference files.

Fan running when external display is connected

I have a MacBook Air 13in, mid 2011, 4GB memory, 1.7 GHz (iCore 5), running OS X 18.3.
With the laptop on, every time I connect an external display (HP LA2205wg) through a miniDisplay to VGA adapter, the fan starts running wild and it is so loud to disturb my work. Yet, I check the activity monitor (All processes) and there does not seem to be any process taking a lot of CPU.
However, if I swich the MBA off, wait a few seconds for the fan to stop, and then restart the MBA, there is no fan noise. I have to do this every day I get to the office and connect the external display. It's annoying, as I have to reopen the same files etc.
I have browsed the apple support forums and I have seen similar posts, some dated 2009. Yet no actual fix is suggested in the posts. I am still giving it a shot, hoping I don't need to waste even more time to go to an Apple store. Any help would be greatly appreciated.
Mario

I was experiencing this 100% of the time at work with projectors. I found that once I forced the GPU to NVIDIA in the BIOS... the issue was resolved.
I'd rather have stability than battery life.
W530: i7-3720QM, K1000M, 32GB RAM, 512GB SSD, FHD

Displaying iPhoto slideshows on external display

I'm trying to get my wife's MacBook Pro w/ iPhoto '09 8.1.2 to display the slidehow on an external VGA monitor. She's using the miniDisplay port to VGA adapter. The symptom of the problem is a slideshow on the built-in Display (OK) but a black screen on the external display.
Current workaround:
The slideshow plays fine on the external VGA display when "Turn on Mirroring" is selected in Display Prefs.
BUT....
She doesn't want to turn on/off mirroring every time she wants to show photos. There's no settings in iPhoto that I found that would specify using an external monitor. Quicktime Player DOES allow you to do this. Does this feature just not exist for iPhoto slideshows? Was the slideshow function only intended for a few people to huddle around a computer screen? Hopefully it's more than that.
My wife's comment was "MS Powerpoint is smart enough to display my PPT presentation on the external display, why isn't iPhoto smart enough to do the same thing for slideshows."
I think this is a reasonable expectation of Apple iPhoto but the solution eludes me. I really don't want to have her use the export function in iPhoto as this seems like an unnecessary waste of hard drive space and time. It seems like the feature is sooooo close to being great but it's not (Apple had enough foresight to include an instant slideshow function).

Greetings,
As you pointed out, iPhoto supports mirrored display mode. In extended desktop mode, only the one display is used (this is normal).
When I want to use an external display / projector / TV with my images:
__Use Quicktime player
__Use an AppleTV to stream iPhoto content directly to my TV
__Use Keynote (Apple's Presentation software kinda like MS Power Point) to play a presentation
If you would like to see iPhoto support extended desktop mode submit feedback from within the iPhoto Application:
iPhoto > Provide iPhoto Feedback
or
http://www.apple.com/feedback/iphoto.html
Cheers.

IMac display getting yellow when external display is attached?

Similar Messages

Maybe you are looking for