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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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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May 28, 2012
I own a MBP 13 that I wish to connect with my Acer external mobitor. I bought a miniDisplayport to HDMI [male] cable for this purpose. Now the problem I am facing is that even though my 40" Samsung TV detects the MBP and works as an extended monitor, the MBP fails to detect the Acer monitor. However, I currently use the Acer monitor with my Mac Mini, Tata Sky+ set top box and also my Playstation 3
Info:MacBookPro, Mac OS X (10.7.4)
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Apr 19, 2010
I picked up a MBP 15" core i7 high res laptop on Friday. I actually ordered one of those mini displayport -> HDMI awhile back (was going to get a mini, decided no), however when I hook it up to my plasma it won't adjust the resolution to 1920 x 1080, I checked "display" in system settings but it won't let me push it past the native resolution of the laptop screen.
Any suggestions how to get around this? Also it mentions on the website it can push sound over HDMI now, I wasn't able to figure that out either.
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Sep 9, 2014
So after spending the last few hours trying to understand what is going on with the new HP EVNY 23inch monitor I just purchased to work as an extended desktop with my MBP and finding a number of other discussions relating to the topic where by the non mac external monitors have a very poor display due to the way OSX outputs the colour through HDMI. as seen here: MBP Retina: Poor image quality from hdmi output
Now I'm just wondering, before I return the monitor should I try a thunderbolt to HDMI connector and connect to the HP external display that way? I've tried searching on this topic with no luck so I justhad to ask the question because I actually really do like the screen.
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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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Jun 8, 2012
I have my 2011 17" macbook hooked up via a Moshi HDMI adapter to a 24" Acer 1080p monitor... While the image shows properly it makes the computer completely unuseable. I can't play videos and it lags up the machine really bad. I don't get it... i paid $3000+ for this machine and it can't output a smooth HDMI signal without crushing the system?
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Sep 12, 2014
I would like to run a Macbook Pro Retina (2014) with the lid closed and all video and audio via HDMI routed to an external monitor (Samsung Syncmaster from 2010). Is this possible? When I try this, no sound is transferred to the external monitor and I cannot operate the Macbook Pro with the lid closed. As soon as I close the lid, it cuts the signal to the external screen. I’ve tried looking for previous posts but they’re about MCP’s connecting via Thunderbolt or DVI.
Info:
MacBook Pro (Retina, 13-inch, Mid 2014), OS X Mavericks (10.9.4), 16Gb, 256Gb SSD
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May 2, 2012
I have a 13" MBP and just bought a new 23" external monitor connected via mini DVI to HDMI adapter.The monitor is recognized fine, but there is extreme jitter on the screen - basically very annonying and unusable.
Info:
MacBook Pro
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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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Jan 26, 2009
if i buy the mini display port to dvi adapter, could i use it with a dvi to hdmi cable for my monitor. This is because the dvi and vga ports are already taken up.
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Dec 3, 2014
I have a Mac Book Pro, my partner a Mac Book Air. I bought a thunderbolt to HDMI cable from eBay so my partner could plug her Air into the TV. When the cable arrived, it would not detect our LG TV from either computer. So a bit of playing around and this is what I found. I plugged the cable from my MBP direct to the HDMI port on the TV and nothing, no signal detected. I also tried from the MBP to the HDMI port on the amplifier of the surround sound system and again nothing.However, if I plug the cable from my MBP directly to the TV HDMI and select that corresponding HDMI port on the TV initially still nothing.
But if I then plug a normal hdmi-to-hdmi cable from my amplifier to the Mac Pro's HDMI port, suddenly the thunderbolt cable works and the Display Preferences sees the LGTV. I checked that the correct hdmi port was selected on the TV for the direct connection and I could even turn off my amplifier to make sure that I was not seeing the wrong signal and it still worked as long as the hdmi-to-hdmi was still connected at both ends. However, if I then unplug the HDMI cable from MBP or the amp, the thunderbolt port stops working as well and the TV displays "no signal detected".
It seems that there needs to be either a base signal or an earthing through the MacBook Pro's HDMI port for it to switch into an external monitor mode that will detect a thunderbolt to HDMI connection. This is sort of fine for my MBP as I had nothing working before but it seems a bit pointless having the HDMI cable plugged in as well as I might as well just use this in the first place. However, as my partner's Air only has a thunderbolt port and no HDMI port it still doesn't work with her MAC.
Info:
MacBook Pro with Retina display, OS X Yosemite (10.10.1)
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Jun 18, 2012
I am looking to connect my macbook pro to an Acer G24 monitor, but am not sure what best way to do it.The resolution of the monitor is 1920x1200, and it is a 24" screen, with VGA, DVI, and HDMI ports.My macbook pro is the late 2011 entry model.
Will there be a difference in the quality of the picture on my external monitor, depending on whether I connect using a HDMI cable or a DVI cable? I will have to buy an adapter for each of these, to plug into the mini DVI port on my mac, will this alter the quality of the picture at all? If I were to buy an Apple Tv, would I be able to plug it straight into my monitor using a HDMI cable? If so, how would I manage the audio, as my monitor does not have speakers. Would using a thunderbolt cable (with HDMI adaptor) increase the quality of the picture of my monitor?
Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.4), Apple TV, Thunderbolt, Monitor
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Oct 9, 2009
I have a 13" MBP and it won't detect my external display. It works fine on my sister's whitebook using, but won't detect at all on the MBP. I've went to "detect displays" under system preferences, played around with the cable, and made sure the monitor is on. It work's flawlessly on my sisters. What's wrong? Any suggestion on what I should do? I'm losing my mind right now. The screen on the MBP goes blue for a sec when the external display is connected, but then just goes back to it's original desktop.
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Jul 1, 2012
macbook air does not recognize monitor from HDMI TV
Info:
MacBook Air, Mac OS X (10.7.4), Display
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Aug 31, 2014
I want to connect my macbook pro to a monitor. the monitor has an HDMI and RGB inputs. which cords would i have to do to connect my macbook to the monitor?
Info:
MacBook Pro, iOS 7.1.2
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Jun 19, 2012
I am running Lion OS on a 17 inch unibody Macbook Pro. I have been watching television on my Sony XBR television through my computer using a mini-hdmi to hdmi converter - essentially using my television as a second monitor by using mirror mode. It has been working perfectly until just recently. Now everytime I hook up the mini-hdmi connection, it is changing the resolution of my Macbook Pro screen. It is crushing the picture of the Macbook down and making Safari - the controls as well as the screen image contained therein - really dark. I have tried playing with the display controls-including trying to get my computer to re-detect my television. I am stumped as to WHY this started happening all the sudden.
Info:
MacBook Pro, Mac OS X (10.7.3)
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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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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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Jun 27, 2014
transfer my files from my WD external drive to my MBP but to no avail. I installed them both and after that, my WD Elements wont show anymore. It was working before prior to installing MacFuse & NTFS-3G. So I tried to remove them both but still the same problem. It wont detect my WD external drive anymore. The light on my WD drive is lighted up as usual but can't be found on Finder. I also tried to remove the WD external drive from my MBP and it recognises that my WD is there! Its says did not unmount correctly, something like that. I also tried to isolate the problem using another computer, this time, Windows and it works well.
The Culprit of all this is when I install MacFue & NTFS-3G
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Jun 23, 2012
I have a 13" mid 2011 MacBook Air and a new ViewSonic VX2453 monitor. I used the Monoprice mini display port to HDMI converter with audio and connected the monitor to my computer's thunderbolt port. The video works perfectly, but the sound isn't working at all. I set my computer's sound output in settings to VX2453 series (type: HDMI), and I set my monitor's audio input to HDMI. Nothing. I also tried changing the frequency in Audio MIDI Setup, which someone recommended on amazon for the monoprice adapter, but that didn't work either.
I tested the monitor's sound by switching audio input instead to "audio in" and connected to my headphone jack, and that worked so the monitor's sound is fine.
Info:
MacBook Air (13-INCH, MID 2011), Mac OS X (10.7.4)
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Jun 12, 2012
I installed NTFS for Mac to read/write external hard disks that I shared between my Macs and PCs. It's doing find until recently after I upgrade my MacBook to Mac OS Lion.
It can still can detect certain external Hard Disk, but still cannot detect some external Hard Disk and Flash Drive even though it is supposed to be dual formatted.
Info:
MacBook, Mac OS X (10.7.4)
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Oct 16, 2008
I picked up a new MacBook yesterday and I noticed a weird issue when coming out of "monitor sleep" mode, not regular sleep mode.
When I move the mouse, the external monitor shows what you see in the picture, kinda like a TV with no signal. The MacBook screen works fine so what I just do is unplug and re-plug in the DVI plug and everything is good again.
My 24 inch Dell monitor worked fine with my M1330 and other computers so I know it's not that. Does anyone have the same issue or maybe give me some light on this?
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Jun 27, 2009
I have a 22" Dell external monitor on my MBP. I know that I just close the cover to my MBP to shut off the screen. What do I do in those instances that I want to use both screens? There has to be something simpler than restarting the MBP?
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Aug 5, 2009
As said, my current set up is an HDMI - DVI cable (HDMI to monitor and DVI to adapter) and my DVI - mini DisplayPort adapter, everything is connected fine but when I turn on the monitor, it says cable not found... and nothing is displayed on the screen but on the Macbook side of things, it sees the monitor is connected (I can extend the screen and leave the screen) but other than that, it appears I cannot get an image on the monitor, pressing every button on the monitor does not work either.
Any other information that may seem necessary, let me know. I tried clearing my PRAM and clearing the power and such but nothing seems to work.
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Jan 9, 2010
I have a 27" i7. I have a 24" DVI Montior hooked up to it via MDP->DVI adaptor. When the 24" Monitor is on, everything is fine. When I turn the monitor off, the magic mouse tracking on the 27" screen stutters. I am not kidding - it took me ages to figure out that to fix I either need to turn the other monitor on OR disconnect the MDP->DVI adaptor.
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Jun 29, 2012
So I would like to connect my iMac 27" to my pc soon (July 9th)Can I connect it with a HDMI cable by using the MiniDisplayPort "converter" to HDMI?I don't really know what the year is of the iMac but I bought it in 2011 on the Apple online store website.I can see Thunderbolt ports on the back of my iMac, can that give you a hint about the year of the iMac?
Info:
iMac, Windows7
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Aug 2, 2010
I ordered the new 27" i7 and shoulder be here this week. I'm looking to make my samsung SyncMaster T260hd my second monitor, it supports all connections, dvi-d, hdmi, vga.
I'm wondering which "mini display port - to -xxxx" should I get. Does HDMI go higher then 1080p? Is the DVI-D my best option?, I've read that they both have the same "video quality" but was wondering if HDMI offers the same resolutions as DVI, and which will be better for the future as well. I still hope/plan to buy a mac pro in 2-3 years.
I use my computer for light video editing (after effects), lightroom, and photoshop.
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Jun 22, 2010
Just recently got a Mac Pro and it's plugged into a 24 inch Dell monitor with the DVI cable, can I also plug my xbox 360 to the same monitor at the same time using an HDMI cable or could that cause problems?
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Jun 2, 2012
I'm trying to plug my new mac mini into my Dell flat screen monitor. It doesn't seem to fit my HDMI to VGA cable so I'm assuming that my cable is in fact a DVI? The cable is actually a little too big for the VGA adapter and no spots for the screws.
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