How to setup extended desktop with second dispay

I am not able to setup a second display for use with my new 2.3 i7 MacBook Pro, running Lion. I can run the displays mirrored. If I try extended, I get the dock and menu bar on the second display and the prefs window on the 'book display. The cursor remains firmly with the second display and cannot be moved to the 'book display, forcing a power button shutdown to right things.
The same monitor, an Eizo, runs perfectly in extended desktop with 10.6.8 on my year older MacBook Pro.

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HT5019 If my second display is not showing up on the graphics display window, yet the second display is showing a mirror image, how can I get it to recognize the second display and allow me to setup extended desktop?

I'm running 10.9.2 on a Power Mac from 2013. I am using two identical HP monitors. I have a Y adapter to connect the monitors. Which I'm guessing means the computer is only seeing one display since there is only one display output.

There are no PowerMacs from 2013. The desktop tower from 2006 on got named Mac Pro. The problem is probably the Y adapter. You need a videocard with two display ports, or two videocards to be able to make an extended desktop from one to the other. If you gave us the Y adapter make and model, we could tell if it supports screen spanning or not.

Can my computer display 'extended desktop' with a second monitor?

I believe I have a G4 Quicksilver 867 (2001) (bought it used and figuring out which model G4 is not that easy). I recently got a second monitor, but I only seem to have the option to have a mirrored setup (which works well). Is there anything I can do or rather what are my options to get it to show extended desktop. My video card is
Chipset Model: GeForce2 MX
Type: Display
Bus: AGP
Slot: SLOT-1
VRAM (Total): 32 MB
Vendor: nVIDIA (0x10de)
Device ID: 0x0110
Revision ID: 0x00a1
ROM Revision: 1049
Will I have to get a new graphics card or is there a workaround of some sort?

Thanks, not what I wanted to hear, but helpful. hope you'll answer a couple of questions. I bought this computer as a second (do taxes, surf the internet, connected to my wireless router, escape my three kids wanting to use the primary). I've been very happy with it for its limited use (my primary is one of the first Imac G5's).
1st: Do you think it's worth putting a faster processor in it? My G5 has the latest OS, but I'm hesitant to go past 10.411 with the G4 867
2nd: Would you recommend a video card update to run extended desktop?
3rd: Can you run extended desktop on the original IMAC G5's (1.8 ghz, GeForce FX 5200, 64 mb ram)?

Extended desktop with 2 LEDTVs and VGA?

Hi everyone,
I really need some help here.
I have 2 40" Samsung LEDTVs with the model UA40D5003BRXXM. They are docked on the wall side by side. Basically i want to achieve extended desktop (not mirroring) for my mac mini (if can). Assume I open a browser 1 on 1st LEDTV, i can drag that browser to the 2nd LEDTV. So i can see more stuff at 1 time.
However I am not using HDMI or DVI as the cables are too short. Based on my contractors, HDMI cable is max 2 meters. So we got them to work on VGA cables. The mac mini and the LEDTVs are quite far away. The cables are already connected below the flooring and hacked into the wall.
So few questions:-
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b) can I achieve dual LEDTVs for extended desktop here?
If i can't find a way to do it, then i will have to buy non Mac here i prefer mac if can.
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I have never personally used one of these DisplayLink adapters myself. According to their Mac software download page, you can have up to 4 of them on a single Mac. See http://www.displaylink.com/support/mac_downloads.php
I could not find specific mention of whether it supports using them as an extended desktop rather than mirroring, but as they support up to four screens (on a Mac) and mirroring only applies to using two, one can deduce this means extended desktop is supported.
Upate: Ok, the user guide does confirm extended desktop support is included, as well as mirroring.
Note: USB does not have enough bandwidth to drive multiple hi-res screens at the same time, DisplayLink gets round this by using the computers GPU to compress the data before sending it to the DisplayLink interface. They do say it supports playing movies. However I personally would expect that you may see some peformance hit and that the low end Mac mini with just an Intel GPU might struggle.
I could not find system requirements for Mac use other than that it currently is not Lion compatible - just spotted a beta version for Lion so you could use it.
If your VGA cable is not solidly embedded in plaster etc. i.e. is reasonably loose, you could consider (after testing the Cat5 HDMI devices) using the VGA cable to pull the new cable through.

Extending display with second monitor

I am trying to add a second monitor to expand my desktop area. I routinely do this with my G5 laptop by simply plugging in a second monitor, clicking on DISPLAY in SYSTEM PREFS, clicking ARRANGEMENT, and clicking off MIRROR DISPLAYS.
With the iMAC G5 ARRANGEMENT does not appear as an option and default seems to be mirror. Any way to make this work?

This is an update to my previous post. I searched on Google about this problem and found an answer -- an old Macworld article:
http://www.macworld.com/article/39969/2004/10/imacscreenspanning.html
It describes a freeware program called Screen Spanning Doctor. I printed out the page and followed the instructions. It worked! I now have a Samsung SyncMaster 930B set at 1280 x 1024 and my iMac G5 set at 1440 x 900 (maximums for both) and They are not mirrored; the Samsung monitor extends the desktop of my iMac G5. I couldn't be happier.
Just in case Screen Spanning Doctor does not work for you, be sure to print out this Apple support document, Resetting your Mac's PRAM and NVRAM:
http://support.apple.com/kb/HT1379?viewlocale=en_US
You can never be too careful. I believe what this will do is undo whatever changes Screen Spanning Doctor does. Per the Readme:
"This program is intended to unlock some features of the graphics hardware in some Macs (iBook, iMac, eMac but not for all models - you can find a complete list at my website http://macparts.de/ibook). On supported Macs it will allow the use of an extended desktop where usually only mirrored mode is available. This enables you to use an external display to extend your workspace. It will also unlock additional resolutions for the external display making it possible to driver high-resolution screens. This is especially nice if you want to use an LCD panel that has a higher native resolution than the 1024*768 of the internal display. After you apply the patch you should see an additional tab in the displays prYou will only see this tab if you have at least the monitor adapter plugged in."
Good luck! (I'm going to make a donation to macparts.de, which created this program. I figure it's worth $19 -- what I paid for the VGA display adapter at the Apple Store.

Qosmio G30: How to enable extended desktop?

Is it possible to extend the desktop across the laptop monitor and and external monitor when it is connected to an external monitor? I see in the manual it talks about "simultaneous" display using external and laptop monitor, but I need it to be "extended" across both monitors and not just "duplicated" to both monitors.
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Maybe not only do I need to wait for a 1900 monitor, but also that capability. I wonder how the another laptop works with this? Maybe back to looking at that option.
Phil

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I have a 2.4 GHz MacBook I purchased this summer. I was considering using it for my desktop needs, but I need to have a two-monitor extended desktop. I don't particularly care for the thought of using the notebook's monitor in addition to the 24" display. I'd rather have dual 24" displays, but in talking with the "chat" line on the store website, they said this is impossible to have an extended desktop this way. I'm stubborn and can't help but think that is not impossible with the appropriate work-around.
Suggestions? Thoughts?
Thanks so much.

The only option for dual external displays on a Mac laptop is the Matrox DualHead2Go. But with a MacBook, you could only get a maximum of 1024x768 on the two montors, a completely waste of a 24" monitor IMO.

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10:06 PM Tuesday; August 7, 2012
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Spoiler (Highlight to read)
+--- The Configuration ---+
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+--- The Configuration ---+I've made 2 subnets:192.168.1.x (Existing)192.168.10.x (New)and configured 4 APs on each (1 PRO and 3 Normal using Trunking between 2 HP 1910 24 Switches) and then again found some strange thing that: Only 1 Normal AP can be connected to PRO in a Workgroup Bridge Mode, and vice versa.
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OR
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Thanx! The information is very helpful.

HT3235 My second monitor is working but I can't figure out how to use it! I can't get anything to drag. I know how to adjust extended desktops on PCs but I can't figure this one out.

I am used to working on duel monitors. I bought a new MacBook Pro 15' yesterday, the adapter for my monitor, and the monitor is on with the generic background but I can't drag any windows over to it. I can do it on PCs but can't figure out on the Mac. Can someone please help the noob out?
Thanks
Nikki

The blue blocks in that screen are Icons for your actual screens. Their sizes are proprtional to the number of pixels in each screen. They can be dragged to new locations relative to each other -- as long as they are touching at some point. You are expected to drag them so that they correspond with the actual screen location on your bench, so that the movement from one scrren to the other is intuitive.
The white stripe represents the menuBar. It can also be dragged to any screen, and that screen will then be the one with the MenuBar. It will also become the screen with the Startup icons on it.

How to setup extended desktop with second dispay

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