Allow an extended desktop for imac G5 using OS X 10.3

I got a new display for Christmas that I connected to my imac G5 using a mini VGA, which i intend to use as an extended desktop. I went to System preferences and they said if I don't have an extended desktop option, that means my computer can only display a mirror image on the new monitor.
Is there anyway I can modify my imac to treat the new display as an extended desktop instead of just mirroring the image?

<http://www.rutemoeller.com/mp/ibook/ibook_e.html>
Note the warnings.

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Hi,
I have a late 2012 i5 Mac Mini with 8GB RAM currently I am running two displays on it using a thunderbolt to HDMI cable for one and a HDMI to HDMI cable for the other. I use both screens as an extended desktop (i.e. not in mirror mode).
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I don't have one to test, but it should work as advertised.
Check the reviews at > https://www.elgato.com/en/thunderbolt/thunderbolt-dock
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I have the 20 inch Intel iMac at home, and the 13 inch Intel MacBook for the road. When I have both at home, can the the MacBook be connected to the iMac and serve as an extended desktop?

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Last edited by valnour (2008-03-18 20:10:07)

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How to avoid extended checks for the events used in ALV.

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I typically use my 13" MBP with a 20" LG monitor in extended desktop mode. I would regularly plug in my computer when I got home to do work, and unplug it when i left the next morning. I hadn't used extended desktop for a few days, and the next time I plugged in the monitor, it came up with weird resolution with a different aspect ratio and an off center picture. The option for 1600 x 900 at 60Hz isn't listed in system preferences anymore. Do I have a hardware problem here?
Note: I did switch to a shorter VGA cable to reduce clutter on my desk before this problem occurred, but I can't get extended desktop to work properly with my old cable, so I don't think its a faulty cable.

OK open System Preferences/Displays and click the Colour Tab
Does a Profile appear in the left hand column that matches the name of your external monitor ?
If others appear try selecting one of them and then going back to the first
Uncheck "Show profiles for this display only' then try selecting some alternatives to see if this kicks it into action.
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AFAIK this can't be done. Sure Nvida's PCI version can dual display but it hasn't had the firmware crippled by Apple.
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Setting Up Extended Desktop

I am trying to set up an extended desktop for my iMac. The operating system on it is 10.6.8 and I am trying to set it up so that the extended desktop utilizes my Macbook Pro system 10.7.5. I have the thunderbolt cable and have connected it to both computers and tried the following:
System Preferences -> Displays -> Arrangement
However, when I go into system preferences there is no option under displays for arrangement. What am I doing wrong or what should I be doing to make this work? Is it even possible? Thank you.

There is no MacBookPro model that I know of that you could use as an extended desktop for your iMac. I don't think any MBP's ever supported use of the MBP as a display for another computer.
Only certain iMac models support(ed) their use as a monitor for another computer connected to it via miniDP. If you have such an iMac, you may be able to use it as an extended desktop for your MacBookPro, but not the other way around.

Dual Monitor (Extended Desktop) Information Requested

Hello,
I am gathering information regarding the addition of an additional monitor to serve as an extended desktop for my iMac 2GHz Intel Core Duo (purchased in early 2006).
Questions:
1) Is it possible for this 2 1/2 year iMac to have an additional monitor?
2) My iMac has a Mini-DVI port on the back. While looking at other monitors, I have been seeing 15 pin High-Density D-shell (VGA), Video - 24 pin DVI-D, and Video - HDMI interface inputs
3) Which one of those interface types is recommended?
4) Does Apple require a proprietary cable to connect with the above mentioned monitor?
Thank you for any information!
Tony
3)

Yes it is possible to have an additional monitor. I would compare the 20" iMac display to DVI quality although I believe HDMI is the highest quality (probably comparable to the 24" iMac displays). You will need a mini-DVI adapter to connect any display (see link below). I would recommend a DVI connection using a monitor the same size as your iMac that can handle the same resolution as your iMac display. If unsure what this resolution is go to system preferences>displays.
http://store.apple.com/us/product/M9321G/B
You can also read some of the reviews from this mini-DVI adapter as most of them are trying to do what you are doing. You will also need a standard DVI cable (sometimes included with monitor) to connect to the new monitor to this adapter. There is also a mini-DVI to VGA adapter - although I wouldn't recommend this connection because it will be lower quality than your regular display. And a cable that connects DVI to HDMI if you decide to go that route.
http://store.apple.com/us/product/M9320G/A
http://store.apple.com/us/product/TL952LL/A

Extended Desktop (video out) issues

Hi, I'm having trouble figuring out how to set up an extended desktop onto another monitor using my iMac G5, 1.8 GHz. Mirroring the desktop is fine, and the help screen says that if there's no "Arrangement" option, then it won't be able to set up the extended desktop. I don't see this, but I seem to remember having this computer use a second display as an extended desktop before. Is there a solution for this or am I destined for mirrored desktops only?

yep, sounds like your computer doesn't support spanning, only mirroring...
As someone else said there is a firmware extension script called 'screen spanning doctor' (google it). I wouldn't call it a hack as you can remove it by resetting your pram, i think... however, it can mess your computer up, so really think before you want to use it!!
js

Allow an extended desktop for imac G5 using OS X 10.3

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