Won't recognize Monitor through Monitor Share

If I plug my monitor directly into my G5, the G5 knows it's a Dell D1226H. BUT if I plug my monitor into a monitor share, the G5 tries to use some generic monitor extension, and the display is really hard to see.

We have 2 iMacs and 1 PowerBook, networked through a
router. Our Epson printer is hardwired to one of the
iMacs, and printer sharing has been selected and
turned on in the Printer & Fax preferences of the
System Preferences. Initially this worked fine, but
now the PowerBook will not locate the printer through
the network, no printers at all show up in its
printer list. We've tried resetting the printer prefs
in both the iMac and the Powerbook, but still no
luck. Any help?
My Epson R200 never did share properly no matter what I did. My Brother works fine as does the Canon950 but not the Epson. My thought is the driver is garbage for anything other than basic, local printing. My next attempt will be my workhorse 1280 and I also have a small USB print server plus a builtin print server on the Airport that I am going to try.

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My mac won't recognize an external monitor. The screen Goes Blue Once, then goes blue again and the second monitor just turns off. I am using an HDMI adapter to a visio TV. I also have my xbox on the tv. Can anyone Help??

My mac won't recognize an external monitor. The screen Goes Blue Once, then goes blue again and the second monitor just turns off. I am using an HDMI adapter to a visio TV. I also have my xbox on the tv. Can anyone Help??

Lol, figured out the first part. Just for those who may be searching, when you click on the Display Preferences, and click on the arraingment tab... it not only shows where your two screens will be displayed, but the WHITE BAR at the top of one screen is the dock/toolbar. Click and hold to grab this and just slide it over to the screen you'd like it to be on.
You have to release it IN the screen box, not on top of it... and it should pop right over to the new (or old) screen. At any rate, you can put the dock on either (or any) screen that you prefer.
I am thinking of ordering more of these. Lol. 3 monitor setup seems like it would be crazy good.
Still looking for the answer to keeping the new 16" screen on the right without switching between screen #s with that... not expose... Lion feature.
Thanks. Hope my other question has an answer out here.
Paul H

Mini DisplayPort to VGA isn't working. It won't recognize any external monitor. It worked just fine with my older spring 2011 MacBook Pro running Snow Leopard, but now with my brand new 2012 MacBook Pro running Mountain Lion, it no longer works

I just bought a new MacBook Pro this summer and was all excited. But I'm very frustrated right now because I can't connect to any external monitors through VGA. My thunderbolt (DisplayPort Mini) to HDMI works just fine, but when I try with my other connector to go from Thunderbolt (DisplayPort Mini) to VGA, Nothing works. my screen goes blue and changes size like it recognized something but nothing is ever detected on the external moniter or projector. I'm not sure what is wrong but it's very frustrating. I'm just very depressed that it worked just fine with my 2-year-old MacBook Pro but isn't working now. I'm running OS X 10.8.2. I just upgraded yesterday from 10.8.1 but that upgrade did nothing to fix my problem. Can anyone help? Thanks

I am haveing this exact same issue. I have plugging in 3 monitors and tried two different VGA to mini displayport and nothing is working. I recently bought a Acer monitor and it work for an hour and now it back to doing the same thing.
When I plug the VGA adapter in to the monitor the monitor think its not connected to a computer then when disconnecting the VGA adapter the monitor thinks it is connected to a computer.
NEED SOME HELP!!! at the point of all my hair is pulled out.
^^^
that is the same problem i am having! if anyone can help that would be great i'm losing my mind over here

New iMac won't recognize my external monitor.

I just upgraded my workplace computer to a late-2012 iMac (with the thin edges) from the previous older model.
I have an external monitor that I use as a secondary screen - a Samsung SyncMaster BX2440 - that worked great on my older machine using the DVI adapter.
When I plug the same adapter into my newer machine, it won't recongize the external monitor.
I tried resetting the PRAM, but no dice.
Is this a Thunderbolt issue, and if so, how easy is it to resolve? Do I just need to get a newer DVI adapter?

Loner: I looked at that and it only shows the main iMac display. Doesn't show the other device.
The model I'm using is a Thunderbolt machine (has the lightning bolt arrow icon). The previous machine was a DisplayPort model.
The adapter is the Apple-issued DVI adapter, but I'm guessing that even though TB and DP use the same physical plug interface, the adapters are not compatible?
(The adapter has the standard monitor icons on it - box with vertical lines on either side).

I'm trying to set up a dual monitor for my new iMac. I'm using a second display I used with my old G5. My iMac recognizes the second monitor but the monitor won't turn on. Power button doesn't do anything on the monitor itself.

I'm trying to set up a dual monitor for my new iMac. I'm using a second display I used with my old G5. My iMac recognizes the second monitor but the monitor won't turn on. Power button doesn't do anything on the monitor itself.

If it won't turn on then the monitor is dead (power supply?, video circuits?). Not worth repairing.
If you have a new iMac then it has thunderbolt. So exactly what is that monitor you are trying to connect? For TB you can connect a mini-displayport monitor. Probably (not 100% sure with TB) can use dvi or vga too if you have the appropriate adapter.

Does OSX Mountain Lion recognize an external monitor through a USB Port?

I am thinking of buying an external monitor soon and I dont know if my Mac Mini 2011 will recognize the external monitor through a USB port. Is their a software that I would have to download? It will be going throught the port with this http://www.walmart.com/ip/SIIG-USB-2.0-to-VGA/10884548 or even this http://www.directron.com/k33928us.html?gsear=1. Thanks

That is to complicated, requires special drivers and most likely will produce a poor quality siginal to the monitor.
For 24" or smaller monitors your best bet it to buy a monitor with HDMI and/or DVI input and use a good HDMI cable between the Mac Mini and Monitor, or optionally the supplied HDMI to DVI Adapter and a DVI-D cable.
For larger Monitors you will want one with a DVI or Display Port input and use a Mini DisplayPort to DVI Adapter and a DVI-D cable or a Mini DisplayPort to Display Port cable.

T410 won't recognize external monitor on KVM

I have a ThinkPad T410 with Windows XP SP3. I've installed the latest Presentation Director (4.55) and the latest Intel HD drivers (6.14.10.5273). If I hook up my external LCD monitor (an HP L2045w) directly from the VGA port on the monitor to the VGA port on the laptop, I can extend my video display to this monitor. However, if I attach the monitor through a KVM switch (a Belkin Omniview E series), I can't. I don't have a dock for this laptop.
The weird thing is that if I set the BIOS so that the external display is the boot display, the external mointor shows the boot screens even when on the KVM switch. I can even get the external display to work on the KVM switch if I boot into Safe Mode. But when I boot into Normal mode while on the KVM switch, the external monitor goes dark as soon as Windows switches video modes, and after I log in I can't extend my display onto the external monitor.
Any ideas?
BlueBearr

I'm having exactly the same problem.. I'm thinking it might be a power issue (the power adapter for the omniview series was optional) - but I've never seen this before, and I'm seeing other external monitor issues crop up... let me know if you find a solution.
Oh, my keyboard and mouse work fine, just not the monitor.

How do I get my Mac Pro to see the second monitor through a video splitter and/or switcher?

In a recording studio we have a Mac Pro with two video display monitors in the control room and we want to be able to show the content of the second monitor to the person in the recording room on a big display monitor there. However, when we interpose a switcher or splitter between the computer and the second monitor so that we can (with a switcher) switch the second monitor signal from the control room monitor to the record room monitor or (with a splitter) split the signal to go to both monitors, we have no luck. On startup the computer does not see the monitor through the switcher, so it doesn't recognize its existence. If we start the computer up without the switcher in the signal chain, it sees the second monitor just fine, and (weirdly enough) we can then change the cabling to interpose the switch, which then works to switch back and forth between second monitors (control room and record room), but that cable swapping's a royal PITA. We want a simple solution that will allow us to start up the computer, see the second monitor in the control room, then choose to show it to the person in the record room with a simple flip of the switch (or even better, split the signal so it's available both places). The splitter we've tried most recently is this one: http://tinyurl.com/curen39 I'd appreciate any advice from people who have tried this configuration or something similar with success. We have a full ProTools HD Accel 3 system installed, so there's no room to install a second video card. Thanks.
Mac Pro 8-Core 2.4 GHz, OS 10.6.8

Christopher Dobrian wrote:
Thanks for the response! Yes, it's a 5x70 video card, a 5770 I believe. In any case, it does have the three ports, but (a not-well documented fact) that doesn't mean one can really get three full-resolution signals out of it at one time, as you alluded to in your message. So, yes, we did try hooking all three up directly to the computer, but the computer would only recognize two of those monitors, and the only way to get it to "de-recognize" the second monitor and recognize the third monitor was to physically disconnect the second monitor.
I did say when you want to connect three monitors to 5x70's there are some rules to adhere to. These are covered in the first two apple docs mentioned above, or by title:
Mac Pro (Mid 2010), Mac Pro (Early 2009): Issues with three displays and multiple DVI, HDMI connections
Mac Pro (Early 2009), Mac Pro (Mid 2010): Supported display configurations
The general gist of these rules is that to drive three monitor son a 5x70 you need two active adapters. That is why one of your monitors was disabled when you tried to add a third.
Here's a good explanation of what's going in here and why you need two active adapters on these cards:
Active vs. Passive Displayport adapters *the truth*
If you use DVI monitors and any of them have resolutions less than 1920 x 1200 then you can use single link active adapters. The "AMD Eyefinity Validated Dongles" chart shows some active (and passive) adapters that are acceptable. For example of a single link DVI active adapter is the Accell B087B-006B. An example of a dual link DVI active adapter would be the one from monoprice.com if you need to connect monitors with a resolution greater than 1920 x 1200.
I'm doubtful that SwitchResX would be able to convince the computer that there were only two monitors connected and direct the second monitor signal to the correct place, but it certainly seems worth a try, so thanks for the idea! Any other ideas are still welcome in the meantime.
I'm not doubtful. It is a very powerful utility for dealing with all aspects of multiple monitor configurations (they call them "Display Sets") complete with forcing EDID information if necessary. The different configurations can be controlled with a (contextual) menu and/or hot key.
SwitchResX is academic at this point if you want to have all three monitors connected. You would need to get that working first. Then use SwitchResX to vary the configuration combinations. So if you go this route the "name of the game" is figure out the active adapters you need.
I only described in general terms above about the adapters since you never said exactly what kind of connections these monitors require (single link DVI, dual link DVI, hdmi, mini-displayport, vga).

Mac mini doesn't recognize the second monitor

I have Mac mini mid 2011 with dual display setup - one HDMI, the Second one thunderbolt to DVI adapter.
Majority of times it doesn't recognize the second monitor connected through thunderbolt. Sometimes it start suddenly after a while, I've read there are some issues with the 10.10.2 Yosemite...
Any suggestions how to sort it out please? Many thanks, this is really a pain in the *** for me, strugling for a half an hour with a monitor...

Thanks lllaass I tried it but doesn't work. I tried with different cables, still doesn't work.
The strange thing is that sometimes it suddenly starts and works smoothly... Really strange problem. I will try a new adapter Thunderbolt to HDMI....
What is the worst, when both monitors work smoothly and I put the computer to sleep or i shut it down, when started all over the monitor is not recognized.
Ehhh :-(

I plugged in my brand new nano to my husbands desktop to get it registered, but had a problem mid way through when I tried to used an apple login that already existed. Now it's not registered and the computer won't recognize my device. How do I fix this

I plugged in my brand new nano to my husbands desktop to get it registered, but had a problem mid way through when I tried to used an apple login that already existed. Now it's not registered and the computer won't recognize my device. How do I fix this?

iPod not recognized in 'My Computer' and in iTunes for Windows
Call U.S. iPod and Mac technical support: 1-800-APL-CARE (1-800-275-2273) to register your iPod Nano.

Is it possible to use my ipad 4 as a second monitor through a USB connection.

Is it possible to use my ipad 4 as a second monitor through a USB connection.

perhaps, but my information was current. I had the same question and was looking for and answer and found it. So I responded in order to help others who found this question and were looking for an answer. This community is made more helpful and kept current by adding new answers with current information.
imobl... air display was a valid response for 2011 predating the question. Also using Monitor2go was valid in 2012. There were USB mirroring and as a 2nd display for an iPad options at the time the original question was asked.

I have a PowerBook G4 with a non-functioning monitor. It used to work with an external monitor, but I reinstalled the OS, which cleared the display preferences and now when I restart it won't detect the external monitor. How do I fix?

I have a PowerBook G4 with a non-functioning monitor. It used to work with an external monitor, but I reinstalled the OS, which cleared the display preferences and now when I restart it won't detect the external monitor. This means I can't use the computer anymore. How do I fix? I tried using the Command+F2 keyboard shortcut, but it doesnt' work. It's possible that since I reinstalled the OS, it still needs to be set up, so there's only a welcome screen (but since I can't see it I'm not sure).

There is no limit to the number of times you can re-install Office on the same computer.
You can activate by telephone:
The last paragraph is the relevant bit

Can I daisy chain a DisplayPort-only monitor through the 2nd TB connector on a WD 8TB My Book Thunderbolt Duo to a mid-2011 Mac Mini?

I'm very tempted by a refurb HP Smartbuy ZR2740w 27" WQHD display, but it doesn't have a HDMI port. It does have DisplayPort.
Since the mid-2011 Mac Mini I have has either HDMI or Thunderbolt to choose from, plus I've just bought an external TB storage system, I think I'd need to connect the monitor to the second TB port on the external TB storage and hope that the external storage would pass the DisplayPort signals along.
I've read that DisplayPort connections are compatible with TB ports on Macs, and that you can daisy chain TB devices.
I don't want to assume those statements hold when I'd need to connect the DisplayPort cable to the 2nd TB port on the external storage.
Anyone know if this will work?
Is it "supported"?
Thanks!
Andrew

23. How do I connect my Mini DisplayPort monitor or monitor using a Mini DisplayPort adapter to my Thunderbolt-equipped Mac when I have other Thunderbolt devices connected?
When connecting a Mini DisplayPort display or a display using a Mini DisplayPort adapter to a Thunderbolt peripheral (except as described in question 24), make sure the display is connected at the end of the Thunderbolt chain. You can use only one Mini DisplayPort device in the Thunderbolt chain.
Note: Systems with more than one Thunderbolt port, like an iMac, can have more than one Mini DisplayPort monitor or monitor connected with a Mini DisplayPort adapter connected as each Thunderbolt port can support one Mini DisplayPort display.
24. Can I connect my Mini DisplayPort monitor or monitor using a Mini DisplayPort adapter to my Apple Thunderbolt Display?
Mini DisplayPort Monitors or Monitors connecting with Mini DisplayPort adapters will not function when connected through a Thunderbolt Display. They must be connected directly to the Thunderbolt port on the computer or to a non-display device as indicated above.
from
http://support.apple.com/kb/HT5219#23

I downloaded the new osx mavericks system, and it would not recognize my external monitor. I have a macbook pro.

Any ideas on how to get my new osx mavericks that i just downloaded to recognize my external monitor?

Hello maggiefromloudon,
Thanks for using Apple Support Communities.
For more information on this, take a look at:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Best of luck,
Mario

Networking 2 computers to share files problem. won't recognize login/pass

hey
i really need help with this.
i now have 2 computers, a powermac G5 and a powerbook G4 connecting to each other with an ethernet cable so i can share files. for some reason when i try to connect as a user instead of guest it won't recognize my login/or password. it was working briefly before.
the only thing i did different was go into my account settings in both computer's preferences and changed the user name and password so they would be the same. they were the same before other than a capital letter but that sometimes affects things so i wanted to make them the exact same. now no matter what i try i cannot login to the network other than as a guest. and i want to be able to access my whole other computer.
this is what it says:
'Unknown user, incorrect password, or login is disabled. Please retype the name and password or contact the server's administrator.'
appletalk is on in the ethernet tab.
file sharing is on.
i've repaired disk permissions.
any help on this asap would be great. thanks

See this.
How to use an iPod with more than one computer.
You say the iPod is already set to manual transfer. If so, files cannot be automatically be erased from the iPod when connecting to a different computer that does not contain the same files.
Manual transfer is how you have control of the iPod when using it on more than one computer. Files on the iPod are added and deleted manually by the user and not automatically by the computer and iTunes.

Won't recognize Monitor through Monitor Share

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