Intel Mac :: Unable To Detect An External Display?

Feb 4, 2012

I'm using a mini display-port to hdmi lead and it worked once. I unplugged the hdmi cable when it was still connected to the mac and now it wont find it.

Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)

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Hardware :: Unable To Detect External Display - Sanyo HDTV?

Dec 20, 2008

New MacBook rocks and in cables to hook it up to my Sanyo HDTV 1080p. I plug in the HDMI cable and the picture comes on.

However, every once in awhile the screen goes black and it says "Signal Not Found." Also, every time I turn on the MacBook I have to unplug the HDMI cable, wait a few seconds, and then plug it back in before it will detect the external display.

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MacBook Pro :: Cannot Detect External Display

Apr 24, 2012

I have a 2011 MBP (thunderbolt) that I've had for about a year now. I use it daily at work, with an external LCD monitor connected with a mini-dvi -> DVI, no problem, except for the occasional need to restart when first connected.

However, at home I have an AOC Razor 24" monitor that until recently was connected to my home PC via HDMI, working just fine. However, my PC died and now I would very much like to be able to use this monitor at home until such a time when I get around to finding a desktop replacement. My MacBook Pro, however, has completely different ideas it seems... It completely refuses to recognise the monitor. I don't get the blue "flash" and it doesn't show up int eh display panel at all, not "sleeping" or otherwise, it simply looks as if it's not there.

Having trawled the forums, I've done the Jan/Feb firmware update, I've tried two different HDMI converters (One the Moshi from my local Apple retailer, the other a no-name brand converter, which works fine elsewhere), I've even tried a mini-dvi -> DVI -> HDMI converter (I know, I didn't expect it to work, but when you're at then end of your wits, you're at the end of your wits ). I've gone through three HDMI cables and tried an assortment of "black magic" solutions found on the net, with the adapter half-way plugged in, resetting the PROM, closing/opening the lid, running gfxCardStatus ( just in case it did something ) and checking the monitor elsewhere.

The only thing I haven't done (that I can think of) is swap the actual MBP,however, as mentioned, I use an external DVI monitor every day, so it doesn't seem likely that that's where the problem is... I'm guessing it's got to do with how the monitor handles HDMI or some such thing but I don't seem to be able to find much of a comment from anyone else on the net, so here I am... I considered sacrificing a goat at full moon, but I'm not entirely convinced that'll do much either and I upgraded to Lion as I saw a throwaway comment somewhere from someone, indicating that that might or might not have helped them with a slightly similar problem... So this problem now spans 10.6 AND 10.7... 

Info:
MacBook Pro, Mac OS X (10.7.3)

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MacBook :: Unable To Use Auto-Detect Display

Dec 15, 2009

I have a macbook with leopard osx and use it frequently for presentations and so on. I have connected it to several monitors and projectors a hundred times and it has worked fine since last night.

Last night, I have connected my mac to a monitor with vga cable but it did not detect it and instead a constantly flickering blue screen came up and never went. I am sure the cables are fine.

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Mac Pro :: Graphics Card Not Working / Unable To Detect Display

Oct 13, 2009

I just got a new mac pro dual quad core to replace my single dual core for work. Im trying to pull my Nividi Quadro 4500 out of my old machine that i had installed by apple in to my new machine. i get it all hoked in right but when i turn on my new machine it dosnt detect the display. Any suggestions?

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IMac :: No Option To Detect External Display / Screen Resolution

Aug 6, 2010

I have a 27" imac and have been using an apple led cinema display with it. I have had no problems with the display until today. Yesterday I installed windows 7 via bootcamp and had some trouble with the second display being detected but after downloading all of the bootcamp updates it worked fine. Today I restart my computer back into OSX and the display does not work. I tried resetting the PRam or whatever but that didnt do anything. When I go to system preferences > display there is no longer an option to detect display and there are no longer options to change the screen resolution.

I spoke with an apple tech who has me installing an update but I dont think she really knew what was going on and I doubt this will work. When I reboot back into the windows partition the display works during start up and I see the windows logo. So I dont think its a hardware issue (also the display still works fine with my macbook pro). But as soon as startup finishes I get a black screen. Under the control panel windows still recognizes that there is a 2nd display attached and you can still drag items over to the other screen, I just cant see anything. All black.

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Intel Mac :: Can A Mac Detect A MINI Display Input From A Cable Box

Mar 22, 2012

watch Tv on my New Imac 21.5 (2012) with thunderbolt port.My set top box has HDMi out. I need to connect HDMI ( from Cable Box) to thunderbolt ( On Imac)I have learned that this can be done by single coverter cable = HDMI to Mini display cable (Thunderbolt port will accept Mini diplay Input, they say)  will it work > how about the audio? 

Info:
iMac, Mac OS X (10.6.7)

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MacBook Air :: Doesn't Detect External Monitor Connected Through Mini Display Port To HDMI Adapter

Sep 8, 2014

I bought a MBA 13" last month and now I'm trying to connect an external monitor through a Mini Display Port-to-HDMI adapter and most of the times the display shows a message "No signal detected"...

I've tried all the possible combinations between the MAC and the Monitor but it would seem a random matter.

Info:
MacBook Air (13-inch Mid 2012), Mavericks 10.9.4

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Intel Mac :: Unable To Detect Camera

May 29, 2012

I have just upgraded to OS X 10.7.4. When I connect my camera to download photos it says that it dosn't detect a camera. Have i missed a step ?

Info:iMac, Mac OS X (10.7.4)

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Intel Mac :: It Will Not Detect External Monitor After Recent Update

Apr 10, 2012

I have a VGA monitor plugged in to my imac using the VGA adapter to the mini-DVI.  All was working well. Since I updated over the weekend, the computer will not detect the monitor. 

Info:
iMac, Mac OS X (10.6.8), VGA Adapter

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OS X :: Unable To Show 10.6 Install On External Monitor / Grey Box On External Display With Black Bar

Feb 27, 2009

I have a Macbook Pro 2.16 Core Duo, and I'm wanting to install 10.6, but about a year ago, I cracked my screen to the point that I cannot make anything out on it, and haven't replaced it. Instead, I have just been using it in clamshell mode, which has worked out fine so far. My problem is that I cannot get the 10.6 install to show up on my external monitor.

I searched around, and could only find one other similar thread that just ended with the author putting it in clamshell and having it work fine. When I boot to the install and close the screen, I just get a grey box on my external display with a black bar on either side of it. I can't seem to find any other resources, so I'm not entirely sure what to do at this point. Any help would be greatly appreciated.

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Intel Mac :: Connect 17" Macbook Pro As External Monitor To 24" But Won't Detect Displays

Apr 7, 2012

I'm using a mini display port to dvi adapter and dvi cable. 17" macbook pro is several years old and software is up to date.

the first picture is from the imac, the second is from the laptop.

Info:
iMac, Mac OS X (10.6.7)

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OS X :: Hotkey To Detect Display?

May 6, 2006

a hotkey to detect new displays? I plug my Powerbook into my TV often and don't want the little Detect Display icon in my menu bar. It would be much easier just to use a hotkey, or even if I could set up a shortcut to do it.

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OS X :: SL Does Not Detect Display On Launch

Aug 29, 2009

I use two monitors: an Apple Cinema display and a Dell, which is display number 2. I installed SL and it was normal until I rebooted the first time. Now every time I boot up, the only display that is found is the Dell and I have to go into preferences and select "detect displays" to make the main one show up. It loads as if the Dell is the only display, and since it is smaller it messes up my desktop, lumping all my icons on top of each other. When I click "detect displays," it moves everything back to the Apple monitor, making it the main display as it should be, but it is all out of whack.

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MacBook Pro :: It Won't Detect VGA Display

Mar 13, 2012

My MacBook Pro (15-inch i7 Early 2011) won't detect an external display using an apple mini displayport -> VGA connector using 10.7.3.All cables and the monitor are fine because my white macbook detects the LG monitor without any problem.I have read and tried every 'sollution' suggested on the internet, but all fail. Since my MBPro can't even detect my Sony LCD TV (my white macbook does) i suspect it's a firmware/hardware issue.I want to buy a thunderbolt display, but am not sure if i can spend all this money when even this simple VGA connection won't work.  

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MacBook Pro :: Won't Detect New Thunderbolt Display 27 Inch

Aug 25, 2014

I have a Macbook Pro mid 2009 running Mavericks. I have an old 23" Cinema Display that uses a big chunky adaptor (ADC?) with a dual USB and Thunderbolt cable and it works well with it, however, I just bought a new Thunderbolt 27" display and it just won't detect it. I also notice that a lacie drive in the same Thunderbolt slot won't show up either. The old Cinema Display does still work however using that same slot so it's not actually dead. Puzzled!  

I know this MBP is probably one of the first generation to have Thunderbolt but I've never used it for anything other than the old Cinema Display adaptor. 

Info:
MacBook Pro, OS X Mavericks (10.9.4)

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Hardware :: System Does Not Detect The Monitor In Display Preferences

Aug 23, 2009

a mini display port. I purchased the mini display port to DVI adapter to hook my computer up to a Viewsonic vx2235wm 22" screen. I plug it in and get nothing. I've read on the apple support site that some people with older mac mini's and MacBook Pro's can hook it up no problem. But for me, my monitor is getting no signal and my MacBook Pro doesn't detect the monitor in the Display Preferences.

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OS X V10.7 Lion :: Broken Screen On MacBook Pro - Unable To Show Desktop On External Display?

Jun 9, 2012

I have a broken screen on my MacBook air and have an external screen attached via thundbolt and hdmi connection when I boot up the unit it only shows second screen on external no dock or desktop so can not see system preferences or anything, need to find a way so then when I boot up system the external automatically comes the default screen

Info:
g5 iMac, Mac OS X (10.5.8), W85270KTSDZ

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Mac Pro :: Unable To Detect Original Stock RAM Now?

May 14, 2008

I recently bought two 2GB sticks of OWC 800 MHz ram for my Mac Pro.

My Mac Pro originally had two 1GB sticks, which worked fine, I just wanted more.

It seems that they don't work together. I've tried every possibly configuration. Is it the case that they just aren't going to work together because they are different sizes?

Right now, I have the two 2GB sticks in A1 and A2. And the stock 1GB sticks in B1 and B2. A1 and A2 gets detected, but B1 and B2 doesn't.

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OS X :: Macbook Unable To Detect IPhone

Jun 18, 2009

I have a Macbook and I just bought an iPhone 3G and it seems my mac is totally not responding to my iPhone.I have the latest updates but to no avail.I also have also just loaded intego virusbarrier 5. I heard that it is interfering with the sync of both devices. So how do resolve this problem without having to erase and re-install my harddisk

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Mac Pro :: Unable To Detect All Wireless Networks

May 7, 2012

My pro only sees my Airport and does not detect other wireless networks even there are some around- my other macs detect 7 n all-- note I have win7 with bootcamp and does the same thing?

Info:
MacBook Pro, Mac OS X (10.6.8), my laptop and sisters Imac see 7

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Intel Mac :: Can Use It As An External Display

Feb 10, 2012

I have a 21.5" Mid 2011 iMac and a 24" Mid 2007 iMac. Is there any way to use one of them as an external monitor for the other?

Info:
Intel iMac, Mac OS X (10.6.6)

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OS X :: IPhoto Is Unable To Detect Any Photo From IPhone 3G?

Jun 29, 2010

I m new to Mac application. The most headache part is i m unable to import my photos from iPhone 3Gs into iPhoto. Why does this happen? Is the setting of Mac itself or problem with my iPhone?

I have went to Mac shop for assistant, i have spent 2 hours there but the assistant was unable to solve the problem as well.

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OS X Technologies :: Unable To Detect Usb Stick In Windows 7?

Apr 24, 2012

unable to detect usb stick in w7.

Info:
MacBook Air, Mac OS X (10.7.3)

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Mac Pro :: Upgraded To 10.7.4 Now FireWire Unable To Detect Devices

Jun 11, 2012

Created vuescan for my scanner, since microtek stopped making drivers. Can't figure out the problem. I can't find answers anywhere online, and I need this scanner working yesterday. I got it to work on my laptop since that's still running 10.7.3, but that's no practical. Did 10.7.4 upgrade do that screwed this all up?

Info:
PowerMac, Mac OS X (10.7.4)

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MacBook Pro :: Unable To Detect Hard Disk

Jun 5, 2014

recently the harddisk of my macbook pro crashed and I had it replaced with a SSD thinking I could use the old harddisk as an external but now it seems like the crashed harddisk cannot be detected by my macbook. What should I do?

Info:
MacBook Pro, Mac OS X (10.7)

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Intel Mac :: External Display Impact On GPU?

Jun 25, 2012

I have an early 2006 Intel iMac 17" with a Core Duo 1.83 GHz processor and the 128MB ATI Radeon X1600 GPU. I am planning on adding an external display to my iMac, probably a Dell Ultrasharp 23" with a resolution of 1920 x 1080. What I want to know is, what impact will running an 2nd display have on my iMac's frail and poorly cooled GPU?

At present, my GPU runs at around 45-50 C idle, and 60-65 C under gaming use. I have been considering opening my iMac again to clean all the dust out and renew the thermal paste on the GPU but simply haven't gotten around to this just yet. If the GPU is likely to run much hotter if a display is connected?

Info:
Mac OS X (10.6)

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OS X :: External Hard Drive To Mac / Wont Detect

Dec 26, 2009

I recently just purchased a macbook pro and am trying to convert files from my external hardrive on to my mac. My external was used with my old computer which was a dell so it was run off of windows format. I cannot afford to lose all of this information i have on here. Is there anyway i can convert these files so my MAC will read them without having to delete my files on my external.

I connect my external to my MAC and it says it doesn't read it, i believe it is in ms-dos format.

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MacBook Pro :: How To Detect External Monitor Via HDMI

Jun 29, 2014

This is my first Mac. I cannot get it to detect my external display:  It is an ASUS PA248Q, manufactured Aug 2012.

The HDMI cable according to my Amazon history is at least 1.3c from 2010,  "Fanatic Digital Imperial Series Gold-Plated HDMI Cable (6 feet)". It works with perfectly connecting an AmazonTV box to an old Samsung TV, with vivid clarity, unlike our cableTV signal.

Just in case, I have a new HDMI cable on order, which claims to be of newest standards. The Macbook Pro Retina (late 2013) has the standard Intel Iris from the Haswell chips, as well as Nvidia GT 750M, the latter which I don't think has been used yet.

The ASUS display says:  HDMI NO SIGNAL. 

I have tried shutting them down and replugging the cable.  I don't know what the ideal order is.  The Macbook Pro is plugged into AC power, as suggested.

In System Preferences>Display, I press the Option key to select "Detect Displays" option (seriously unintuitive). 

I have also tried resetting the NVRAM:

I shut the machine down.  Pressed the power button, then quickly held the quadruplet:  Option-Command-P-R  (a double handful) and waited for the machine to chime a 2nd time.  Tried to detect external display no luck. 

Next, I reset the SMC:

I shut the machine down.  Then I pressed Shift-Control-Option-Power   for about 5 to 10s.  Then I turned on the machine normally. NVRAM & SMC steps were from an old youtube video, as the instructions I had did not explain how to do so clearly.

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MacBook :: Unable To Detect Logitech Mouse Buttons?

May 27, 2010

I have two extra buttons on my logitech mouse: a button on the side and the scroll wheel button. I set up the logitech control center and set commands for those buttons, but nothing happens when i press them. Anyone know how to fix this?

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