Apple monitor not recognizing keyboard

My 7 day old Apple 23" monitor is not recognizing my 7 day old Apple keyboard (hardwired, not wireless). I am using a MacBook Air. All was fine until last night.
Suggestions?
Thanks!
Elizabeth

Some similar things but not many. I have not changed anything in the computer. Update , I did borrow a VGA to VGA cable was able to get this to work. But for the life of me I cannot get a signal from the Displayport. Also I tried a Displayport to DVI-D cable with no results. I would like to use a digital signal rather than an analog. Maybe I will try to update my Bios.
Thanks for your reply. Anybody else had this problem?

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Monitor not recognized by Mac anymore?????

Hi
This is big and what is APPLE doing to solve this issue??
I just copy some posts from the forum to show how big this issue is, there is 8 more pages with the same problem, and i am one of them!!!!
HELP!!!! WE ARE FREAKING OUT HERE AND NEED A SOLUTION!!!
Yes, me. I have an HP w2207 who worked with my 3 y.o. old MacBook (OS 10.4.??) via the DVI-port flawlessly. Then bought a brandnew MacBook Pro with 10.6.X and the external monitor stopped being recognized. It works now that I have changed the connection to the VGA-port of the monitor (and bought yet another adapter for the MacBook Pro) but the quality is not what I'm used to.
MacBook Pro Mac OS X (10.6.1) HP w2207 external monitor
MattLTH
Posts: 15
From: Salt Lake City, UT USA
Registered: Dec 4, 2007
Re: External monitor not recognized!
Posted: Dec 1, 2009 1:29 PM in response to: cruzcj
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Yes. I've tried 7 different Macs including a MacBook Pro with Snow Leopard (10.6.2) and my external monitor doesn't work with it either.
For me here's a recap:
Installed SL on a Mac Pro connected to a 23" Cinema via DVI and Olevia 537 via HDMI Input #1 and now that input no longer works with Mac computers.
Reinstalled 10.5.8 on the Mac Pro and HDMI #1 still didn't work, so I plugged the Mac into HDMI #2 and it worked.
Reinstalled SL on the Mac Pro connected to a 23" Cinema via DVI and Olevia 537 via HDMI Input #2 and now that input no longer works with Mac computers.
Since then, every device (PCs, DVD Players, Video Cameras, etc...) I connect to either of the HDMI inputs work fine. However, neither HDMI input works with ANY of the 7 different Macs (regardless of OS version) I've tried, except for a 10-year-old G4 running Panther or Tiger.
The monitor had previously worked with the MacPro (HDMI input #1) and a G5 (HDMI input #2) for almost 2 years.
When I plug the MacPro into any other monitor via HDMI, it works fine. Same thing with the G5.
My theory is still that the installer for Snow Leopard somehow made my monitor's HDMI inputs incompatible with Macs. I'm so frustrated that I'm ready to buy a new monitor, but since there's no guarantee that a new monitor won't be adversely affected by Snow Leopard, I'm still dubious.
Matt
MacPro, MacBook Pro, PowerMac G5 Mac OS X (10.6.2)
Stephen Darling...
Posts: 59
From: London, UK
Registered: Sep 24, 2004
Re: External monitor not recognized!
Posted: Dec 5, 2009 8:22 AM in response to: Roger Kaufmann
Reply Email
Another "me too" post...
Not sure exactly when it stopped working (since I don't use it every day) but my Viewsonic VX2455wm stopped working with my MacBook recently too. Checked with another MacBook (six months newer than my Late 2006 model) and that exhibited the same problem. Both machines have fully patched Snow Leopard installs. Both started with Tiger. Mine is regularly connected to the external monitor, the other has never been connected. I'm connecting using a DVI cable and a mini-DVI-DVI adapter.
The monitor appears to work correctly. I've checked with a Windows laptop connected on the VGA port. I want to test with another DVI-enabled machine to see whether or not its the cable.
MacBook C2D 2Ghz Mac OS X (10.6.2) iPhone
cruzcj
Posts: 4
From: California
Registered: Nov 28, 2009
Re: External monitor not recognized!
Posted: Dec 13, 2009 10:38 PM in response to: Stephen Darling...
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My wife's 15" MBP arrived on Wednesday. Connected it tonight to her new Dell 23" ST2310 via a MiniDisplayPort to VGA and it works fine.
MacBook Pro 15" 2.8GHz Mac OS X (10.6.2)
Gaston55
Posts: 4
From: Sweden
Registered: Dec 15, 2009
Re: External monitor not recognized!
Posted: Dec 15, 2009 12:06 AM in response to: Roger Kaufmann
Reply Email
Hi Guys
I have the same problem with my new Dell 2209WAf. It worked fine before i changed from L to SL.
I didn't know what happened so i have spend hours and hours to resolve the problem.
Hours with Mac support and friends didn't change anything, i still cant make my Dell to work, or show up in preferences. I am working as a photographer and this issue is a real problem.
I just heard from Mac Support that Apple is working on it.....well, doesn't help us with the problem today.
So Apple, DO SOMETHING ABOUT THIS! NOW! this problem should NEVER showed up, this is something you should have fixed before telling all the Macers to upgrade!!!
Macbook Pro Mac OS X (10.6.2)
RWildman465
Posts: 2
From: Illinois
Registered: Dec 16, 2009
Re: External monitor not recognized!
Posted: Dec 16, 2009 1:18 PM in response to: Gaston55
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Experiencing the same issues. However, on bit different hardware.
I'm using the XLR8 ProView USB input devices. Using these devices on a mixture of 10.5.8 and 10.6.2 systems (2 MacBooks, 2 Mac Mini and 1 iMac).
I can confirm the following:
When attempting to mirror video, or extend the desktop, using a mini-DVI to S-Video/Composite device on OSX 10.6.2 no video is sent to the mini-DVI device (inputing into the XLR8).
When attempting to mirror video, or extend the desktop, using a mini-DVI to S-Video/Composite device on OSX 10.5.8 video is sent to the mini-DVI device (inputing into the XLR8).
Let me also state, that the mini-DVI port on the Mac Mini's do work. They have been connected to 19" monitors and working without issue. Today, the mini-DVI devices were replaced with minidisplay port devices, which are use in conjunction with the mini-DVI ports.
It would appear, in my case, that the problem is that the mini-DVI port on both the MacBook and Mac Mini, running 10.6.2, as a secondary display device is not operating properly.
iMac Mac OS X (10.6.2)
Todd Camp
Posts: 2
From: Chicago
Registered: Dec 19, 2009
Re: External monitor not recognized!
Posted: Dec 23, 2009 12:41 PM in response to: RWildman465
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Same problems here. I reloaded OS 10.4.6 which is what shipped with my MBP1,2 17" 2.16 Intel Core Duo 2GB ram and after installing that, i was able to select 1920x1080 for my external HP w2338h, DVI-VGA, never been able to connect DVI-HDMI. On SL, the max rez I was able to "use" was 1600x1200 which looked horrible. So this leads me to suspect that this must be an issue with SL.
I spoke with Apple Tech support on Sat and was no help. The only suggestion was that I take my MBP and Monitor to the Apple Store. Those of you who are fortunate enough to live in Chicago in the winter, then you know that option really isn't that feasible, it is but just a giant pain.
Early 2006 MBP 17" Mac OS X (10.6.2)
Salm0n
Posts: 1
From: Minneapolis
Registered: Dec 27, 2009
Re: External monitor not recognized!
Posted: Dec 27, 2009 9:57 AM in response to: Todd Camp
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I have an iMac 9,1 Intel Core 2 Duo that I bought last June. It came with Leopard, but I upgraded to Snow Leopard. Currently, it's running 10.6.2. My HP w2207 Widescreen monitor works perfectly with it using the DVI port on the HP and the mini-display (not mini-DVI) port on the iMac.
However, I just bought the top-of-the-line iMac 11,1 Intel Core i5 QuadCore three days ago and it crashes nearly every time that it wakes from "sleep" when the HP w2207 is connected to it. It doesn't even recognize that the w2207 is connected to it. Additionally, when the w2207 is connected, it (a) looks terrible - very dim and very granular, and (b) causes the iMac QuadCore to operate very sluggishly. When I disconnect the HP w2207, the iMac QuadCore is lightning-fast.
Much like my older iMac, the QuadCore is running 10.6.2 and I'm using the mini-display port.
iMac 11,1 & iMac 9,1 Mac OS X (10.6.2)
Marjorie Colletta
Posts: 20
Registered: Mar 17, 2005
Re: External monitor not recognized!
Posted: Jan 6, 2010 6:07 PM in response to: Roger Kaufmann
Reply Email
This is a Me too post, I have a MacBook and NEC Multisync Monitor that worked fine before I upgraded to 10.6.2. I've tried to get it to work without any luck. I've written NEC to see if they have a solution.
MacBook 2 GHz Intel Core 2 Duo Mac OS X (10.6.2)
davej147
Posts: 12
Registered: Jun 1, 2006
Re: External monitor not recognized!
Posted: Jan 11, 2010 6:24 AM in response to: Roger Kaufmann
Reply Email
Another me too post. I have a new 17" MacBook Pro with 10.6.2 installed. Trying to connect to an HPL2245wg - sometimes it works flawlessly - other times not at all. Some mornings I spend 30 -40 minutes rebooting, unplugging and plugging the monitor, Detecting Displays, changing the Graphics Card (Energy settings) - all to no avail. Very, very frustrating Apple - please figure out what is going on with this issue....and get it fixed!
17" MacBook Pro Mac OS X (10.6.2) Very happily gave all my XP-stuff away!
Anteck
Posts: 2
From: Australia
Registered: Sep 30, 2009
Re: External monitor not recognized!
Posted: Jan 20, 2010 2:31 PM in response to: Roger Kaufmann
Reply Email
Wow, me too. Did a minor software update (apple released it) last night, got on this morning and BANG - my main 24" Dell display is NOT working.
This is ******, apple have surely f**ked up here. It's never had a hitch, ever, since i bought it 9 months ago.
We are all reporting the same thing - software update, and then no working external display...
APPLE???
Macbook Pro 2.2 15" Mac OS X (10.6.2)
Zedog
Posts: 13
Registered: Aug 10, 2006
Re: External monitor not recognized!
Posted: Jan 20, 2010 2:59 PM in response to: Roger Kaufmann
Reply Email
I seem to have found a fix for myself. I was having terrible issues with the screen blinking and flickering constantly. I tried to reset the SMC with everything unplugged and the computer would not reboot at that point on it's own which led me eventually to reinstalling SL.
Reinstalling SL is quite painless actually as it installs on top of your profile. After reinstalling I ran software update which installs the cumulative upgrades. Now I usually don't have any problems but must follow the instructions to run in clamshell mode to the letter.
After a week of running in clamshell mode I started having an issue with the dock not lining up so I put the computer to sleep, disconnected the monitor and restarted with nothing connected. After that, followed the clamshell mode instructions again and have been working fine again all week.
I've also disabled my screen-saver, and deleted the windowserver preferences as part of my debug process but not sure if that has contributed to my new found stability.
http://support.apple.com/kb/HT3131
Mac OS X (10.6.2)
pragmaik
Posts: 2
From: Duisburg
Registered: Apr 16, 2008
Re: External monitor not recognized!
Posted: Jan 21, 2010 1:08 AM in response to: Roger Kaufmann
Reply Email
Me too. I have a MacBook Pro 2,2 running the latest Snow Leopard 10.6.2. After I have installed yesterday's security patch it does not recognize external displays on the DVI port any longer. Tried it with a 23" DELL at the office and a 23" Samsung at home. Both have worked without any problems for years.
I am curious to learn how this behavior is related to security...

Gaston,
This is not the correct Feedback venue for your issue.
Please select an appropriate product from those displayed HERE and use the corresponding form to communicate to the correct department.
ali b

N570GTX M2D12D5 Dual monitor not recognized

N570GTX M2D12D5
Windows 7 64 bit
Two monitors connected to DVI outputs
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Not found by Rigorous Display Detection either.
Does something else have to be set to get this card to enable 2 displays?
MMc

remove current vga drivers in safe mode with >>Driver Sweeper<<
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I recently did a factory restore on my imac mountain lion, but when i try to download OS x again apple is not recognizing my id and password

I recently did a factory restore on my imac mountain lion, but when i try to download OS x again apple is not recognizing my id and password

So, what exactly did you do for a "factory restore"? Which method did you try?
Did you go to the app store > Purchases? Is it listed there?
Or, did you try using the recovery method (Command + R keys or Command + Option + R keys while restarting)? Are you able/unable to reach Apple's servers to download the OS?

Why won't Apple do not manufacture keyboard with combined trackpad?

So why won't Apple do not manufacture keyboard with combined trackpad?
Same size like numeric keyboard, but without numeric buttons and model with wire or wireless, i'm just curious why they haven't manufactured this kind of product yet.
I have iMac Early 2008 (Upgraded with 128 GB ssd) and Macbook air 2014, sometimes i feel odd carrying separately keyboard and mouse if i want to plug my macbook with IPS display, so it would be lot help if they were combined.

Have a look at this (I've not used it and have no idea whether it's any good):
http://magicconnector.com/about/
http://magicconnector.com/buy-now/

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Hi,
I have an X200 with Vista
When I connect an external monitor (or projector) it is not recognized. Shift-F7 results in a message that no external monitor is detected. However, if I leave the monitor connected, put the system in standby and then resume, it recognizes the external display.
Any thoughts to how I can get it to recognize without this work-around? Thanks

I had the same problem. I think it's a vista device driver issue. Try this-
Power down your laptop. Plug in the external monitor. Boot the computer - it should default to the external monitor, and Windows should recognize it. Then, shut down normally.
Pull the monitor cable, boot your laptop regularly, reattach the cable, and give it a try.
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Me too, but my LG monitor just stopped working after I installed the recent "Thunderbolt Firmware Update".
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My apple is not recognizing my ipod nano G4, has always worked in the past. Need to charge it, but it won't charge. please help. have read troubleshooting, checked connectionsp

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S5610y monitor not recognized

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wpooh65

Hello wpooh65,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand that you have tried 2 monitors on your HP Pavilion Slimline s5610y Desktop PC and neither work, but they do work on another computer. If you see absolutely nothing from the computer when they are connected I think it would be best if you contacted HP technical support for repair options.
US support link to contact options for HP products purchased in the US.
Outside of US support link to contact options for HP products purchased outside the US.
I would like to thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
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Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

MacBook not recognizing Keyboard and trackpad

Our white MacBook has suddenly devepoped the problem of not recognizing any of the internal input devices. A dialog box appears seeking keyboard and trackpad connections over bluetooth on the desktop after start up. I was able to work around this with a USB keyboard and mouse. What might be the problem?

sorry you say your built in trackpad. and your built in keyboard. reboot. reset your pram. maybe your smc
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Mini DisplayPort to DVI Adapter - Monitor not recognizing

I have a new MacBook purchased last month from Apple to replace an older MacBook. I used a Scepter X20 monitor on the previous MacBook with an adapter with no problem. With this new computer, I had to puachase a Mini DisplayPort to DVI Adapter. I plugged it in as I did for the other computer, and the monitor doesn't recognize it at all. I checked the monitor by plugging it into another Mac (older version) with adapter and it works fine. Why will my Mac not recognize the monitor or the monitor recognize that it is connected?

On the very slim chance this might be problem, it happened just last week to another poster and it's happened to me, the mini display port really takes a good shoving into the graphics card. Sometimes it will look perfectly seated in there, but it's not quite.
Aside from throwing that out there, I would think if that wasn't the case, you may be having problems with the adapter itself. The whole mini display port is ridiculous in itself, but the two lessor expensive adapters I bought from Apple worked very poorly anyway. And on Apple displays!
The $99 dollar one Apple sells has a reputation for working the best, but I haven't tried it. There are also devices now, still pretty expensive, that seem to bypass those altogether.
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External Monitor not recognized when running XP (MDP to HDMI)

Hi,
I also posted this in the "Windows Compatibility" forum.
I have a new Macbook Pro (unibody, 15.4", 2.53 ghz) and I am trying to make it work with my Samsung T260HD HDTV/Monitor. I am hooking this up via a Mini displayport to HDMI adapter, Yeah! I have NO problems when using the computer in OS 10.5.6, but when I boot up into windows XP (SP3) via bootcamp, the monitor gets no signal. I know that it is NOT the adapter, Apple hardware, or monitor, because, like I said, it works fine in OS X. I am assuming that this is a windows driver thing. Anyone have any thoughts or suggestions to get this to work? Thanks.
-Dan

boot windows xp in safe mode with vga drivers to use standard 800x600 display drivers so you can see, then install teh drivers for your monitor.

External Monitor not recognized when running XP

Hi,
I have a new Macbook Pro (unibody, 15.4", 2.53 ghz) and I am trying to make it work with my Samsung T260HD HDTV/Monitor. I am hooking this up via a Mini displayport to HDMI adapter, Yeah! I have NO problems when using the computer in OS 10.5.6, but when I boot up into windows XP (SP3) via bootcamp, the monitor gets no signal. I know that it is NOT the adapter, Apple hardware, or monitor, because, like I said, it works fine in OS X. I am assuming that this is a windows driver thing. Anyone have any thoughts or suggestions to get this to work? Thanks.
-Dan

boot windows xp in safe mode with vga drivers to use standard 800x600 display drivers so you can see, then install teh drivers for your monitor.

External monitor not recognized!

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What's odd is that I had, for example, Safari on the external monitor and, when I start that browser, it won't show as it running on the external Philips monitor ... which isn't running (yes, power is on and cable is plugged in). When I unplug the monitor adapter from the back of the iMac it switches to one-display mode again and Safari is shown on the iMac.
The system preferences show the monitor and its position fine ... what's going on?!
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I've had similar problems (see http://discussions.apple.com/thread.jspa?threadID=2132912&tstart=0) with my second monitor. When I downgrade the display of the external to 1600x1000, then the internal monitor of the imac to 1600x 1200, the display on the external is not very good. However, if I then revert the external to 1680x1050 and the internal to 1900x1200 I can get both back to what things were before updating to snow leopard. However, when I then switch off the imac for a while and then switch back on again the external switches back and forward between no display and a fleeting glimpse of the desktop.

Yosemite dual external monitors not recognized?

I upgraded my Macbook Air this morning to Yosemite 10.10 from Mavericks. Now, my Mac only recognizes one of my two external monitors. By this I mean that only one of my two external monitors appears in the Arrangement tab of the Display settings dialog box. This setup worked previously under Mavericks though the mouse motion was jerky on the USB monitor. Is this a bug or does Yosemite not support 2 external monitors? The external monitor that works for Yosemite is connected through the DVI port. The one that no longer works is connected through a USB port via an HDMI to USB adapter. I've rebooted my Mac and the monitor several times and tried the second USB port on my Mac. Both monitors are Samsung though they are different models. Suggestions?

Same issue - but I fixed it! I had the same issues with my MBP while running Mavericks. I tried updated to Yosemite (my co-worker runs Yosemite and has no monitor issues) to no avail. It still did not want to acknowledge any external monitors. Finally I did away with the HDMI connections altogether. I bought to DVI to Thunderbolt cords (Cable Matters, Gold Plated) from Amazon and BOOM! Fixed. Both monitors fire right up every time I plug it up.
I know its not a real fix...its still an issue that Apple needs to address, but it seems to be a great way to get around it until they do. Ive been using these cables for a couple of weeks now and still rocking. I hope this helps someone!
A little history for other to compare to.
MacBook Pro (Retina, 15-inch, Refurbished Late 2013)
Scenario 1: Mavericks 10.9.5
                    Monitor 1: HDMI to HDMI
                    Monitor 2: HDMI to HDMI via Mini to Thunderbolt Adapter
Scenario 2: Mavericks 10.9.5
                    Monitor 1: HDMI to Thunderbolt
                    Monitor 2: HDMI to Thunderbolt
Scenario 3: Yosemite Update
                    Monitor 1: HDMI to Thunderbolt
                    Monitor 2: HDMI to Thunderbolt
Scenario 4: Yosemite Update
                     Monitor 1: DVI to Thunderbolt
                     Monitor 2: DVI to Thunderbolt

Apple monitor not recognizing keyboard

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