IMac 21.5" MC309LL/A -- Can I have an external monitor?

Hello all -- I have a 2011 iMac Model MC309LL/A --
Is it possible to have a 2nd display on this iMac? I've done some research and it seems you can with the 2010 model -- so im a bit confused as why they would take this feature away in a newer year. Any help is appreciated. Thanks!

They did not take that feature away. The 2011 iMacs support external monitors just as the 2010 models do, using the same Mini-DisplayPort adapters.
Regards.

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Satellite P100: Can I connect two external monitor to VGA & DVI port at the same time?

The Satellite P100 comes with two external monitor port. A VGA and a DVI. Can you have have two external monitor working at the same time? Can you have two external monitor as well as your internal display working at the same time (for a total of 3 display at the same time?
Here is what I have confirm:
Internal display + DVI connector display
OR
Internal display + VGA connector display
Is it possible to have:
DVI connector display + VGA connector display?
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DVI connector display + VGA connector display + Internal display?

As far as I know this is not possible and you can use either DVI or VGA port.
For signal output can be used only one port for external display.

My iMac (2007) keeps shutting off when in Full Screen mode (DVD, iTunes Visualizer, etc.) This only happens when I have an external monitor hooked up HDMI.

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Try using another connection such as VGA or DVI to see if the problem repeats itself.

HT5019 Why can I not find a miniport to external monitor cable that works? I have bought for different types, two from Apple, cost me $300+ and still have no external monitor. Help, please.

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What have you bought?
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Can T43 drive 2 *external* monitors?

Hi folks -- this is my first posting and I didn't see this exact question asked before so I thought I'd try the experts! I have an IBM ThinkPad T43, model 1871-4CU, with Mobile Intel 915GM/GMS, 910GML Express Chipset Family (according to the Device Manager). I also have a docking station P/N 74P6734. I'm trying to run two external monitors instead of using the laptop's display and a single external monitor, but my system doesn't seem to support this. I can certainly run the display and a single external monitor (off the VGA port on the dock) with no problem, but when if I close the laptop and try to run two external monitors, the Display Settings control panel doesn't seem to recognize the second monitor (run off the DVI port on the dock). The Intel GMA Driver for Mobile control panel also doesn't recognize that a second monitor is attached. I know the second monitor and the DVI cable are fine because if I remove the VGA monitor the DVI one works just fine. My hunch is that since the laptop itself only has a VGA port on it and no DVI, that by design it can only support one external monitor at a time and not two. I was hoping, though, that since the dock has both ports that I'd be able to to drive two external monitors (again, just two external monitors, not those two plus the laptop's display for a total of three). Am I correct in thinking I can't get around this or maybe there's something I'm overlooking -- like a driver update -- that would allow me to drive two external monitors? Thanks in advance for your help here!
Solved!
Go to Solution.

The reason your T41 works with DVI is it has the ATI 7500 discrete graphics. The original poster had a T43 with the Intel integrated graphics which did not support DVI.
I don't have my T42 with the ATI card with me so I cannot check using it on my 1680x1050 DVI monitor but I know I have used it with an external VGA 1440x900 monitor.
Did you upgrade to the latest driver?
See also here.
Message Edited by zilla on 2009-05-15 02:05 PM
T500: Vista 32, 2.8GHz, 4GB RAM, 15.4" 1680x1050, 500GB 7200rpm, ATI Radeon HD3650 + Intel 4500MHD. T42: XP, 1.7GHz, 2GB RAM, 14.1" 1024x768, 250GB PATA, ATI Radeon 7500.

Can I attach an external monitor to my iMac G5 (ALS) if the video card is dead?

I don't know for a fact that the video card is dead, but the screen on my iMac (PPC/ALS) 20" gradually started flaking out over several months and is now dead. Computer boots up fine and I'm looking at it through target mode right now. I want to keep using the computer if I can, so I am wondering if I can attach an external monitor through the DVI slot even if the video card is kaput. I'd like to get an opinion or two on this before I buy a used monitor and cable. Thanks!

You have found the answer. If the video chipset is OK but there is a fault in the internal display or its cabing, an external monitor will work. However, if the video chipset--which is farther "upstream" in the system--goes bad, the option of an external monitor is off the table.

Can I have an external video source run in a window instead of using the full display?

I'm aware that the 27" iMac models are capable of accepting external video sources, but I'm wondering if it's possible to have an external video source run in a window on the desktop, rather then use the full display. Does anyone know if there's any software I can download to allow this, or will I have to purchase a special capture device?

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I have sensory issues. How can I find an external monitor that isn't too bright?

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There are two ways. Likely if you have the money, the Apple monitor would likely be the best options since it powers your macbook and other stuff as well. It is expensive though. For a nonApple monitor the feature you are looking for is called backlight level. The brightness control doesn't actually control brightness as might be expected because it modifies the signal. The backlight level however does control the brightness of the backlight itself, like the buttons on a real mac. You won't be able to use the buttons on the keyboard though. So when you go shopping, make the salesman show you this feature in the store in the monitors interface and you should be good to go.
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Is there a way to have an external monitor dim like the main screen on an iMac?

i have an apple 24 inch external monitor attached to a 27 inch imac. the main screen dims according to the energy saver settings but the external monitor stays bright. there seem to be no settings in the energy saver pane in system settings to control the dim function, any suggestions?

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Can I use an external monitor in portrait mode?

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I will leave this answer to my original question.
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question."
So yesterday, I took my Samsung SyncMaster 204T monitor to the local Apple retailer to try it out on an actual system. I specifically tried it out on the 24" iMac with the nVidia 7300GT graphics card, since that is the system I was interested in.
It turned out that this monitor works beautifully in portrait mode with the above system using Tiger 10.4.8.
So, I went and bought it!!

How can I make an external monitor the main display?

I have a mid 2007 iMac running OS X 10.4. The internal monitor is broken and all it shows is a bunch of lines.
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Gustavo J. Mata

Hi everybody!
To solve the problem I wrote a script that creates a Systems Preferences windows which shows up in the external monitor. Once this happens the configuration can be changed manually, to make the external monitor the main display. This is what I did:
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tell application "System Preferences"
activate
set x0 to 1080
set y0 to 200
set dx to 800
set wx to 600
set wy to 600
set the bounds of the first window to {x0, y0, x0 + dx + wx, y0 + wy}
end tell
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Cheers,
Gustavo J. Mata

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With an 11"-inch Macbook Air (mid-2012) using a mini DisplayPort-to-VGA adapter plugged into the Thunderbolt port:
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I'd like to see something like
External monitor / Built-in display

Yes, I can't see why not.
Just give it a try and report back if you have a problem.

How can I split an external monitor's screen on MacBook Pro

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Thanks!!

I'm using a Matrix DualHead2Go to connect the two external montors to the Mini-DVI port on the Mac
The behavior you describe in Windows is exactly how much multiple display system works but I have two graphics cards capable of driving two displays each. I believe you have identified the problem in the above sentence. I believe that the Mac sees the Matrix device as a single display and not the two displays themselves. With the two external monitors attached, open System Preferences and select the Displays tab. If the Mac OS sees the displays as two separate displays you should see a dialog in each of the monitors and on your MacBook Pro. If I am correct you won't see three display dialogs, you'll only see two, one on the Mac and one on one of the two external displays.

CS5 Playback Settings grayed out and no longer can set playback on external monitor.

I like to view my projects while editing on an external monitor but the Playback Settings are grayed out. I've done all my prior projects with external monitor display enabled with no problems and can go back to a prior projects completed and view them using an external playback monitor. For some reason, the Playback Settings on my latest project are grayed out and I'm not able to set Desktop Video Display During Playback.
The last project worked on was about 3 months ago. Last week, I started working on two new projects and noticed that I wasn't able to set playback to my external monitor. All my devices are hooked up and I can review older projects on the external monitor but can't set two new projects to use display on the external monitor.
Anyone have any ideas?
Problem solved. My fault.
The Sequence Preset Settings selected must support the device the external monitor is connected to. In my case, IEEE 1394 firewire. I corrected the new project to the correct Sequence Settings and can now view playback on the external monitor.

http://www.blackmagicdesign.com/press/pressdetails?releaseID=42319
"The Desktop Video 9.7.5 software update allows users to take advantage of many new features in the Adobe Creative Cloud desktop applications such as powerful new editing timelines and shortcuts and audio mixing with Adobe Premiere Pro® CC and new creative and visual effects tools with Adobe After Effects® CC."
So everything should be covered on that front. And as I listed, I was getting playback out of AE CC, so I feel it is solely an issue in Premiere. That was worth checking out though since CC is so new. Thanks for replying.

Can I use an external monitor as an extension to my workspace

Could anyone please tell me if I can use an external monitor such as an apple 20” or 30” display as an extension to my workspace. I am using an apple 17”1.5 power book & I would like to drag & drop[p photos etc. from one monitor to another etc.
17"powerbook 1.5 Mac OS X (10.4.6)

yes, when you connect an external display you can either mirror the laptop display, or have it act as an extended desktop
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IMac 21.5" MC309LL/A -- Can I have an external monitor?

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