Imac dual monitor primary monitor issue

This is driving me nuts and I must be missing something...
I have a 27" Imac (all-in-one) fully loaded with all the software I need (which I will call my old machine). I then bought another iMac but a newer one (I will call my new machine) again loaded with the software I need. I linked them together with the correct cable and the dual monitors worked great - my old machine being the primary display my new machine being the external display. It worked great for about 2 years but yesterday I thought I would like to switch the machines around so my new machine is the primary machine I work on (because it has a faster processor and some newer software) and my old machine will be the external display.
I just cannot do it!!! The arrangement tab in the display only shows on my old machine and no matter what I do with the screen and menu bars it is always the old machine which is primary with the older software.
I have tried unplugging each machine in different sequences, rebooting several times with always the same result - my old machine is the one with the Arrangement tab and therefore this is the primary display (with the older software).
Can anyone offer any advice on how to resolve this please.
Thank you in advance.
Tony

- What specific model iMacs do you have?
- Just how are you connecting them?
You may be using Target Display mode
Target Display Mode: Frequently Asked Questions (FAQ)
If so only the new machines can be used at a Target Display
BTW, you posted in the Mac Mini desktop forum.

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Section "ServerLayout"
Identifier "X.org Configured"
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Screen 1 "Screen0" LeftOf "Screen1"
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FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/75dpi"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/100dpi"
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FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/share/fonts/local"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/ttf/western"
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FontPath "/usr/share/fonts/truetype"
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FontPath "/usr/share/fonts/defoma/TrueType"
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ModeLine "1024x768" 75.0 1024 1048 1184 1328 768 771 777 806 -hsync -vsync
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ModeLine "1280x1024" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
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this does not happen in DWM, but should work ok with ratpoison too...so I'm guessing it's a wrong setup on my part.
Enabling Xinerama in xorg.conf doesn't even start X at all...it segfaults
What other steps should I take to makea working dual monitor environment? I would like to have 2 X screens btw (my laptop to be screen :1 and CRT screen :0 (the default))

Scratch that..it was working..but silly me forgot to use ":nextscreen" in Ratpoison..so the windows would open at 1280x800 since the damn thing though I'm still on the first monitor

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But when I build the application, the vi that is supposed to be on the second monitor, shows up over the vi on the primary monitor.
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Kenny
Kenny

Hello Kenny,
might be a bug. but the following code offers more options:
Ton
Message Edited by TonP on 09-02-2006 04:35 PM
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!
Attachments:
fillscreen.JPG ‏35 KB

How do i fix this dual monitor issue?

I'm trying to use two monitors in Premiere Pro: my main monitor for my timeline and editing, and the second for putting bin windows on. The issue is when I simply try to click to play a clip, full screen playback comes up on both monitors and basically freezes. I have to unplug the second monitor to get the monitor to respond.
I am up to date, I have tried checking and unchecking the second monitor playback button in Prefrences > Playback menu, I've restarted the program, and tried restarted my computer.
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Please help if you can. This is for my trading business and I need it desperately.

When requesting assistance, please provide the brand and model name and/or product number of the computer in question. Without this information, it may be difficult or impossible to resolve your issue.
Have you swapped the two monitors to see if the problem follows the monitor or remains at the same location??? Try that first... if the problem follows the monitor, perform a hard reset by unpluging the monitor from power then holding the power button for 30 seconds. If the problem stays in the same location, you know both monitors are good and I would suspect the KVM isn't passing the "EDID" data to the computer. Removing the KVM should will tell you if this is the case.
Please post back with your troubleshooting results.
Please send KUDOs
Frank
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