Display Detection

I am trying to connect my 2008 unibody MacBook Pro to a Sony Bravia 1080p TV with a Monoprice minidisplay to HDMI cable. Plug it in, nothing happens. Go to display preferences, click Detect Displays and Gather Windows, a display pref window pops up with the title "Sony TV" at 1080P, but no picture on my TV. Am I doing something wrong?

You might get a faster response form users with similar hardware here:
Discussions > MacBook Pro (2008 and Later) > The MacBook Pro Display (2008 and Later)
http://discussions.apple.com/forum.jspa?forumID=1294

Similar Messages

MacBook to Samsung T260HD via DVI no display detection

Hello,
i try to connect my MacBook Pro pro via DVI to Samsung T260HD. but it don't work. only "no display detection" on screen. i try the same setup on a T240HD in a shop and it works without any problems. i try my old PowerBook G4 and it also work at the T260HD. only Macbook Pro -> DVI -> T260HD don't work. anyone experience with this setup?

I am actually having the same problem with a T240HD. I have a MacBookPro4,1 , GeForce 8600M GT
I plug in the dvi and the monitor stops displaying no signal, but no monitor is detected by the laptop.

MacBook to Samsung T240HD via DVI no display detection

Hi,
I just bought a Samsung T240HD Display and want to connect it to my MacBook late 2008.
In order to connect the two I bought a Mini DisplayPort to DVI connector plus a DualLink DVI cable.
When I connect all of it, my display goes to sleep and the MacBook doesn't detect the display.
When I only connect the cable to the display and the adapter to the cable without hooking it up to the MacBook, the display detects a connection, but obviously there is no input signal.
The question is, of course, what the **** is wrong?
Thanks for any answers!

I have the same problem with my T260HD. HDMI works great (1920x1200), but DVI doesn't. I can configure it to run at 1920x1200 in vista, but when I logoff/logon again the screen goes blank and stays blank. Plugging in the cable in another monitor and then in the T260HD seems to 'wake up' the display again. Dual link cable doesn't help.
Is there any conclusion on what the real problem is ? Is it the firmware or the Samsung monitor driver ? Anybody got this setup to work ?
related post: http://www.tomshardware.com/forum/262226-33-display-1920x1200-samsung-t240hd-asu s-4850

MBAir inconsistent display detection

Greetings, Apple Support,
Using a brand new MacBook air with a relatively new - purchased new but slightly old - Vizio 24" monitor. At first it worked fine, and then after leaving with my machine and coming back to use the display again it simply would not detect it. I tried the oddly hidden detect display button, did not work. Finally after power cycling the monitor, unplugging the cable countless times with restarts, it worked. Then the next day, didn't. Since then it has been slightly better, and usually when it fails to detect the display I can power cycle it and then it works.
Today, nothing is working. Scouring forums I see a lot of people blaming their display problems on software or firmware updates, which is definetly not the case with my machine, as I bought the machine and display at the same time and haven't updated. (I did update to 10.9.2 today but this changed nothing).
Although it doesn't detect the display, the MacBook screen does flash black for a split second, just like it does when it detects my display--it knows something happened. However the resolution doesn't change and I see no mirroring icon. What's more, system profiler says that nothing is connected to my thunderbolt port.
I'm using a rocket-dog HDMI to thunderbolt cable, seems to be good quality.
Please help me fix this infuriating problem and / or help to restore my admiration for Apple / MacOS.

Hey Haaaalp!
I have an article here for you that will help you troubleshoot this issue with your external monitor:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Thanks for being a part of the Apple Support Communities!
Cheers,
Braden

Turn off display detect

I have my tv connected to my mac book pro and if I switch from the pc port to tv my mac thinks I disconnected the display and turns off the extended screen. Is there a way to turn off auto detect?

Hello t:
Since you are running third party software that affects sleep (and so forth), I think your first place to start would be with the people that make insomniaX.
Barry

VGA Display Detected But Has No Signal

Hello,
Here's the issue,
I'm working on a 13" MacbookPro 10.8. I plug in mac's "display port > VGA" adapter to display my second screen on projectors for a power point presentation. The Mac flashes the screen like it recognizes the display and when I go into the display settings it gives me the second screen options just as it should. However, the desplay remains black as if nothing was ever plugged in. I did the exact same thing on my personal computer which is a 15" MacbookPro 10.8.4 and the projector works fine ruling out any issues with the gear. I've gone to several forums and tried all of the "unplug this, turn this on, wait 15.5 seconds." tricks that people say to do but to no avail. I'm going to try to update the system to 10.8.4 and see if that works, just waiting on passwords since it is a work computer.
Any Ideas?
- Josh

It was the update! I guess 10.8 had some issues with the projector but all is well with 10.8.4

MBP Freezes upon display detection when external monitor plugged in

My new MBP (2.16GHz Core2Duo) will freeze up temporarily when I plug in an external monitor (I use a Compaq MV700). This monitor has served my two previous Powerbooks well, so this seems somewhat anomalous.

Is it just this display or all displays? You might want to try resetting PRAM and NVRAM…
http://docs.info.apple.com/article.html?artnum=2238

Epson projector not recognized. I have recently migrated to keynote on apple air. today my presentation time disaster . projector kept saying no input. i restated the computer. went to display detect computer. nothing worked. Last ten lcd detected.

what can i do so this disaster does not happen again. i was carrying my presentation of powerpoint with me so somehow i managed through other computer.

Due to a copy/paste glitch, some necessary spaces have inadvertently been removed. If I could fix this, I would.

Xorg : No Display detected

I was having a no problemo Arch Installation running on a AMD Phenom II X4 + ATI 4250 IGP.
Off lately I got a new system from AMD (review samples) and now when I started the system in arch I get no X and loads of errors.
Saying Xorg : No Screen found ?
New System : AMD Llano APU ( A8 3850 + Asus Board ) graphics 6550D
The earlier system was running on Mesa 0.4
What should I do ?
Regards
Last edited by Shashwat (2011-07-10 15:06:28)

Hey,
im not sure if this causes the problem, but in your Xorg.conf you write
Section "Device"
Identifier "ATI Radeon 6650"
and here you call the device
Section "Screen"
Device "Card0"
So the device cannot be found by the X Server.
Change the Device line in the Screen section to
Device "ATI Radeon 6650"
And is your new card really a AGP card ("AGPMode" "4")?

MBP to an a/v receiver via dvi to hdmi cable, display not detected?

So as the title says, I'm trying to connect my MBP to a Sony str-dg510 a/v receiver in this order:
MBP >
Mini Displayport to dvi connector (http://store.apple.com/us/product/MB570Z/A?fnode=MTY1NDA5OQ&mco=MTA4ODk2OTE ) >
dvi to hdmi cable (http://www.amazon.com/DVI-HDMI-Cable-6ft-Male-Male/dp/B0002CZHN6 ) >
Sony STR-dg510 AV Receiver >
Analog TV.
And here's the issue: I'm not getting a second display detected at all. It is an analog connection from the AV receiver to the TV, and I've connected other laptops to the receiver just fine, albeit on a different input.
So I'm not sure where to go from here, the mini displayport to dvi works fine onto an apple display at work.
I also got an unlock message on the receiver at first and thought this may be the issue, so I got an optical audio cable similar to this: (http://www.ramelectronics.net/audio-video/audio-cables/digital-audio-optical-tos link-cable/poft3ps/prodPOFT3PS.html )
And now the sound plays fine, but still no picture (and the unlock message is gone.)
Any idea's?
Thanks

Welcome to the Apple Community Q62.
If it works fine on another TV but not directly with this TV, the problem is with your TV or your cables. Have you eliminated the cables.

Detect display when waking from sleep?

Is there any way to force the display detection when waking from sleep? I find that if the mini wakes before the monitor is on, i get a blank screen. When the monitor is on before waking, everything is normal.
I have the DVI-Detective, and the problem is actually worse when using it -- nothing is detected when waking up, no matter if the display is on or not.
My specs:
OS 10.5
C2D, 2Ghz - 2GB RAM
Sharp Aquos 52inch
All standard HD resolutions work fine - it's just now a matter if figuring out how to force the mini to detect the display...
Surely there must be a way to do this?

Great that you got it working. It seems what is happening when the TV is switched off is that the Mac can no longer see the EDID data. Basically, it's the same as if a hot-unplug event had occurred from OS X's perspective. The mini thinks the TV's video cable has been unplugged, so it thinks it is running headless, which of course it is not. And for some reason not completely clear to me, when the TV's power is restored, a hot-replug event is not triggered and the mini still thinks it's running headless. Maybe you are right that it is removed from the list of connected devices for good. But it isn't supposed to work like that.
The DVI Detective is the right tool for the job in cases like this, so it's good you have one and it's good you got it working. I agree it would be nice if there was more override control within OS X for times like this when things go wrong. But if more TV and 2nd/3rd tier monitor makers paid more attention to computer plug-and-play, then these things would work right in the first place. Your TV is in violation of the plug-and-play standard because the standard calls for the host (Mac mini in this case) to be able to power the ROM and I2C bus within the TV even if the TV is in a powered down state. Clearly your TV isn't doing this.

Powerbook detect displays doesn't work on LCD TV. Does on other TV.

Hello,
I recently purchased a telemprompter which uses an LCD TV with a composite input. (From here on out referred to as teleprompter) I set my powerbook up with the S-video to Composite adapter and hooked it up to my Big TV. The screen automatcially detected the external display and changed the settings and diplayed the screen.
When my teleprompter showed up, and was plugged in, nothing happened. I went to the display perferences and clicked detect displays and the image flickered once on the telemprompter. But it didn't show anything else and a second display box did not show up.
Then I plugged my TV in and it didn't auto detect, but when I clicked detect displays it did and all worked again. Then I plugged the telemprompter into the cable and IT WORKED. I could use the LCD TV.
I then clicked "detect displays" and the image disappeared from the teleprompter and the second display box disappeared.
For some reason it is not seeing this particular device. Is there a way to manually force a 2nd display? Everything would work, if I could tell OS X to output a display out the S-video port.
Is this possible? Manually set 2nd display?
I'm using 10.4.4 on a powerbook 1.67ghz. I'm going to try a cheap VGA scan converter in hopes that it will work that way, with a DVI to VGA to scan converter, to composite.

I don't know if my recent experience helps us understand your dilemna, but I just bought one of these NEC 20" all-in-one LCD monitors. It has DVI, VGA, YUV, S-Video, Composite video, and RF input. It's native resolution is 1600 x 1050 and can supposedly scale any input resolution up to 1920 x 1080i. I'm having issues very similar to yours... maybe we can solve them putting our 2 brains together.
I have (2) mini-macs. One of which detected the monitor just fine, and displays the 1600 x 1050 perfectly over DVI. The other seemed to only get a 'partial list' from the monitor when it did it's display detection. It seemed to only get the 'TV' style resolutions, because most of them are interlaced options, and the olny one that doesn't make the monitor twitch like an epoleptic is 1280 x 720p. There is no 1600 x 1050... there isn't even 1024 x 768, 800 x 600, or 640 x 480 listed!!! The funny thing is, if I output to the montior analog VGA (as opposed to DVI) I get the 'full list' of resolutions. This tells me that a 1-time preference/ registry is being made/ created when the detect displays is hit for the first time with a monitor. I can't figure out where the **** this preference information is stored either. It seems if we can find out where on these mini-macs this registry is made, we can solve both are issues... because it certainly is not an issue of the graphics not being able to output the desired resolution. It seems to be some bug in reading the DDC info from the monitor.
If anyone can help.... much appreciation would be had from this frustrated user.

ATI Radeon HD 5870 failing to detect displays randomly during reboots

Hello,
I have a Mac Pro 1,1 A1186 computer, MAC OS X 10.6.6, and I just updated the ole 7300 video card to an ATI Radeon HD 5870 I just purchased from the Apple Store last week.
Problem: Mac OS X 10.6.6 keeps losing the display settings during reboots and fails to detect one of the monitors (the Acer X233H) randomly upon reboots. I tried using two Mini DisplayPort to DVI Adapters, but when that produced undesirable results I just plugged one of the monitors into the DVI diplay port and used just one of the Mini DisplayPort to DVI adapters. Then I tried swapping the monitors around.
I know both monitors and cables that directly connect to the monitors work fine as *they worked on the 7300 adapter*. I'm not using an Apple display, so I'm wondering do I have a bad card or is this common?
I tried reseating the card, completely disconnecting it and reinstalling it. I have both power cables plugged into the card, and both monitors will come up eventually if I keep rebooting my system (if they didn't come up the first time).
Please help... this whole experience is ruining my buzz for purchasing such a kick butt OEM card from Apple. Thank you very much in advanced.
I have 14GB of RAM, 2TB Western Digital (for backup/archival purposes), and an SSD Patriot Torqx 128GB Drive. The Diagnostics state they passed, and everything else works fine except for the display detection.
Here is the setup of the monitors I'm using:
Chipset Model: ATI Radeon HD 5870
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 1024 MB
Vendor: ATI (0x1002)
Device ID: 0x6898
Revision ID: 0x0000
ROM Revision: 113-C0780C-194
EFI Driver Version: 01.00.436
Displays:
Acer X223W:
Resolution: 1680 x 1050 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Rotation: Supported
ACER X233H:
Resolution: 1920 x 1080 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Display Connector:
Status: No Display Connected

OK, I took your advise and tried the "active powered" adapter last night. No dice. The monitor detection still doesn't work even after purchasing the $100 adapter for only 2 displays. Connecting one of the monitors to the DVI display in the back and connecting the other display to the Mini DisplayPort to Dual-Link DVI Adapter.
_This is not the solution as the problem still occurs._
I also tried reloading Mac OS X Snow Leopard last night wiping out everything on the entire partition to be extreme thinking that the system could be confused. I know I could've just deleted the configuration file, but hey... what the heck.
After applying the updates I was able to see both displays again, +_however again they got confused_+.
The end result is from what I believe that the card is inferior in the way it doesn't allow Mac OS X to detect displays properly and or a driver update needs to be issued from Apple to address this issue.
After trying multiple things it would appear that there is only 1 work around as suggest from above (put the computer to sleep). However, to properly fix things we shouldn't have to utilize work arounds.
Important facts that lead me to this conclusion are:
1. Mac OS X 10.6.6 does detect displays properly with the 7300 with no problem.
2. The monitors and cables work properly with the 7300 card, and other systems. So they are not the issue.
3. After installing the ATI 5870 card that's when we I experienced the issues that didn't go away no matter what cable I used or where I plugged the monitors.
a. Thus a $100 cable or a $30 cable worked the same for this issue.
4. Reinstalling OS X 10.6.6 completely and wiping out everything including the display configuration had no bearing on any of this.
Therefore, it can only be two things by deduction:
1. The firmware of the card needs a revision to help support multiple displays.
and/or
2. The driver for the ATI 5870 needs a revision to correct multiple display support within the Operating System.
However, I can't see paying over $500 for a card and an adapter that doesn't work properly. If there is no hope that Apple or ATI is working on this issue with the ATI 5870 card, I have only one recourse and that is not to support this particular ATI product and take it back. I know I can always just keep putting my computer to sleep, but over $500 for a video card and an adapter that is riddled with bugs is way too much for me.
*I'm taking the card back and reinstalling the 7300 until a proper card can be produced or an update is issued to specifically correct multiple display support.*
*Thank you* everyone for your help, I really appreciate it. *+However, the users of the systems can only do so much without proper support from Apple and/or ATI on this issue.+*

Convert mini display port signal to a composite by software

I have already bought a VGA to RCA cable and when I connect it to my original Apple MDP to VGA adapter the screen freaks out. Most probably it's because the 3rd party cable has to receive a composite signal and not an separate RGB + other signals (Hor Sync, Ver Sync) etc.
When I was searching for these kind of adapters I sometimes read that one has to check if his computer can output a tv signal from their VGA port. Most probably they would be referring to the fact that your computer has to manage to output a composite signal through your VGA port.
So I was wondering if there is a way to get my mac to output a composite signal from my mini display port using some kind of software.
Thanks for your help in advance.

Hi Jim,
Just to clarify, you state that you have a MacBookPro5,1, which is the late 2008 model. The video output on that model is a mini-DisplayPort, not a mini-DVI (like the pre-unibody MacBooks) or a micro-DVI (like your 1st gen MBA). DisplayPort is a different type of port. (Note - I requested an edit of the title of your post to clarify that).
When you connect the TV, in what sequence are you connecting? The 'proper' sequence is to connect the DVI-HDMI cable to the mini-DisplayPort to DVI adapter, have the HDMI end connected to the TV, have the TV set to Line-In, looking for a signal, then connect to the MBP last.
What happens when you connect it like that? Have you tried System Preferences > Displays > Detect Displays?

New MBP mini Display Port out to TV (HDMI) not working

Sorry, I just realized I put this in the Original Folder not the Late 2008 folder.
I bought a new MBP 2.4 GHz, 4 GBs RAM machine in January of this year, 2009. Model Identifier 5,1. I wanted to connect it to my TV's HDMI port. Only interested in getting video to TV since I run sound through a sound system. I have been using my MacBook Air's DVI adapter to a DVi - HDMI cable. I have a Sony Bravia 40 HD tv. Video works just fine from my MBAir, can change resolutions to anything and video works perfectly (audio has a little problem though - high frequency hum out of the MBAir's audio port). That's why I want to change to my MB Pro - audio from the New MBP is good.
With my new MBP, using it's Mini out- DVi connector and using the Same Video (HDMI) cable that I used with my MBAir - it doesn't work. The Display Preference does not detect the TV ever. I just get a black screen on the TV. Not even a flash on the TV like it's trying to connect - nothing.
I can pull the cable out of my MBP 2.4 and swap the DVi connector to the MBAir's cable and put it in the MBAir and it works just fine. Swap it back to the new MBP and nothing.
I have tried two different MBP Mini DVI out connectors, thinking one was bad. I even took the connector I use with the MBAir with me to the Apple Store to have them match the connectors, so I would be assured that I got the correct one. Oh by the way, my MBAir is the original one, not the newest one.
I have read a lot of links on the website where people are having trouble with Monitors using the new MBP Mini DVI video out but could not find any thread that matched my TV problem.
Any suggestions or explanations would be greatly appreciated.
Thanks,
Jim
Message was edited by: Jim Humphrey
Message was edited by: Jim Humphrey

Hi Jim,
Just to clarify, you state that you have a MacBookPro5,1, which is the late 2008 model. The video output on that model is a mini-DisplayPort, not a mini-DVI (like the pre-unibody MacBooks) or a micro-DVI (like your 1st gen MBA). DisplayPort is a different type of port. (Note - I requested an edit of the title of your post to clarify that).
When you connect the TV, in what sequence are you connecting? The 'proper' sequence is to connect the DVI-HDMI cable to the mini-DisplayPort to DVI adapter, have the HDMI end connected to the TV, have the TV set to Line-In, looking for a signal, then connect to the MBP last.
What happens when you connect it like that? Have you tried System Preferences > Displays > Detect Displays?

Display Detection

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