MacBook Pro :: Thunderbolt To HDMI Does Not Detect TV On Yosemite
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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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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Jun 21, 2012
I'm using a 13 inches mid-2011 macbook air with OS X 10.7.4 on 12 June, I found the update of Thunderbolt 1.2 in the system update center and I patched it. Luckliy, this patch didn't kill my kernel as it did to many other machines. But I'm still a bit worried when I learned that this updates messed up a lot of users' machines. Now applle announces the newer version of thunderbolt 1.2.1 to correct what was wrong. But no matter how hard I try to check system updates, I don't have it. I know I could try to download it on the website, but is there any valid reason that I don't get this patch? Will install in creating new problems?
Info:
MacBook Air, Mac OS X (10.7.2), Time Machine
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Mar 8, 2012
I have an adapter for this, but when connecting my MBA to a new TV via HDMI, the TV screen shows my 'Mission Control' with relevant windows open, but not the content of those windows, such as a video playing in Safari. When I select the Safari window, the TV just shows the grey background same as Mission Control default?
Info:
MacBook Air, iOS 5.1
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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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Apr 13, 2012
I want to connect my MacBook Pro with my TV by using Thunderbolt connection. Unfortunately I don't know the right adapter in Apple Store.
Info:
MacBook Pro (15-inch Early 2011), iOS 5.1, accessories
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Feb 24, 2012
I'd like to watch video from a Sony HDR camcorder on my MacBook Pro during the shoot. The camera has an HDMI output jack and I've got the HDMI converter that plugs into the Thunderbolt port. Is there any way to just watch it, using the MBP as a monitor?
It would really be great if the viewfinder mirrored to the MBP as well..
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May 4, 2012
I have a new Macbook Pro OS X Lion, and want to use my large LED TV as a monitor, but when using Thunderbolt to HDMI cable to TV, the Menubar is missing from the TV display.
Info:
MacBook Pro, Mac OS X (10.7.3)
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May 25, 2012
I've got a recent MBP with Thunderbolt. I'm trying to connect it via a Mini DisplayPort-to-HDMI adapter to an HDTV with HDMI, but the MBP doesn't seem to acknowledge the addition of the new display. What it IS doing is flickering the built-in screen occasionally, the way it does when connecting to a projector or something, but it never shows any additional displays in the displays CP, and never seems to send any signal out to the HDTV.
Mac: MBP 2.3 GHz i7 with OS 10.7.4
Adapter: Belkin Mini DisplayPort to HDMI
TV: Sony 32" Bravia
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Jun 24, 2012
I have a kanex thunderbolt to HDMI cable that I use to connect to my TV. I recently updated my Mac OS X to 10.7.4. I am not sure if that is the reason, but I can no longer seem to connect. It is being detected by my TV, but the screen isn't showing up.
When I connect, the laptop screen goes blue and then returns to normal and the TV goes from no input signal to a black screen, but that's it. I have tried restarting, shutting down and resetting the PRAM/NVRAM. I called Apple support and they have set me up with an appointment at an Apple Store later this week.
Info:
MacBook Air, Mac OS X (10.7.4), Kanex Thunderbolt to HDMI cable
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Dec 4, 2014
I'm using 2014 MBP 13" with last version of Yosemite. I had connected my old VGA monitor via thunderbolt and new one via HDMI. As soon as I connect the second one SystemUIServer process eats all memory like 70gb and use %100+ CPU which makes my computer unusable. I've tried to kill but it reproduce itself instantly. I can successfully connect 1(doesn't matter vga or hdmi) extra display but issue is connecting both of them at the same time.
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Apr 23, 2012
When it did show the screen saver the mouse arrow was on the tv and not on the computer and there were no icons to be found on the tv to click on. Right clicking would only bring up the screen for setting the background pictures.
Info:
MacBook Pro, 13" bought in 2012
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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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Mar 7, 2012
I'm trying to connect my mid 2011 iMac to my tv. I have a thunderbolt to hdmi cable that I purchased. I connected the thunderbolt port to the iMac and connected the hdmi port to the tv. I turned on both devices and the tv is not getting the signal.
Info:
iMac
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May 14, 2012
I know there are many products available to provide an input to a MiniDisplayPort, but none seem to be combatiable with thunderbolt! Is there anything or anyone that can help me?
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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May 8, 2012
I just set up a monitor in the HDMI output and I have a projector in the thunderbolt to VGA output and the mini defualts to the thunderbolt being the main monitor. How do I get the HDMI monitor to be the main one?
Info:
Mac mini, iOS 5.1
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Feb 20, 2012
How do I connect a newer 2011 27" iMac to a flat panel via a Thunderbolt to HDMI cable? I've already tried this with two different brands of flat panels (RCA and Samsung) and both get no signal. The iMac does recognize the model of flat panel connected to it, the flat panels do not recognize the iMac, nothing but a blue or black screen. Already tried powering down and resetting both the iMac and flatpanels, resetting the memory on the iMac, trying all the HDMI ports on both flatpanels. Nothing works.
Info:
iMac, iOS 5.0.1
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Aug 27, 2014
Connect a HP 2309m Monitor to iMac with Thunderbolt to Hdmi Adapter.
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Dec 3, 2014
I recently upgraded to yosemite and my Mac no longer recognizes my canon pima printer (wi-fi connection). I deleted the printer on the printer list after I received a connection error with the intention of adding it back and now cannot get my Mac to detect the printer to add it. I installed the updated driver from canon's site.
Info:
iMac (21.5-inch, Late 2012), OS X Yosemite (10.10.1)
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Dec 4, 2014
had my yosemite upgrade and everything was fine but I notice that Thunderbolt port has stopped working.
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Dec 9, 2014
Since installing Yosemite, when my Mac Pro comes out of sleep, I get a "Disk not ejected properly" for each disk drive attached by Thunderbolt 2. This all worked fine on Mavericks.
(I have a similar problem with my dual displays, which again worked fine on Mavericks - I've posted this on a different thread under Mac Pro).
Mac Pro 2014, OSX Yosemite 10.10.1, dual DELL U2713HM monitors, La Cie 2Bug Thunderbolt 2
Info:
Mac Pro, OS X Yosemite (10.10.1)
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Dec 4, 2014
The new firmware for the thunderbolt display now is making the screen go black all the time. How do I uninstall this update?
Info:
MacBook Pro with Retina display, thunderbolt display firmware
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May 9, 2012
I have a MBP 2.66 GHz Intel Core i7 and have tryed to connect a Lacie Thunderbolt eSATA Hub to the Thunderbolt port.
1 Will it work with the Thunderbolt Display port?
2/ Why won't it see and Thunderbolt devices in the Systems Report?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Dec 31, 2010
I just bought Samsung UN46C7000WFXZA. I want to connect my macbook pro to the TV and i got all the cables that i need.
1- HDMI cable
2- Mini DisplayPort to HDMI Female Adapter.
3- this sit that include Audio Cable
[URL] I did connect everything my macbook pro very well to the TV using HDMI cable from the laptop to HDMI/DVI port in the TV. Also I connected the Audio cable from my Headphone port in my laptop to PC/DVI Audio IN in the TV. Yes I got the pic and everything is good but no sound at all. I tried everything and i searched the net but no luck or answer at all.
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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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Apr 11, 2010
So i bought a mini display port to hdmi converter and im running an hdmi to RCA cable from to my tv. I dont really know how to set it up to put out the video. I went into displays and clicked detect displays and nothing showed up and theres nothing but a blue screen on my tv.
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May 30, 2009
I was surfing the web, and suddenly the wheel started spinning and my MacBook locked up. I tried rebooting, only to see a folder with a question mark on it. So I tried to boot from the DVD and use Disk Utility to repair my HDD. But Disk Utility didn�t detect my hdd. So I assumed that the drive was dead and bought another one and istalled it.
The new hdd was not recongized by my machine either. Then I took the old hdd and installed it in a external case which connects to the computer with USB and I managed to boot OS X from it.
Anyone knows how I can make my MacBook detect my internal SATA drive?
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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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Apr 28, 2012
My MacBook Pro won't detect my SanDisk USB, I recently had the same problem with a card reader. Initially, I thought it might just be the card reader but now I'm thinking it is an issue with my MacBook.
Info:MacBookPro
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Sep 9, 2014
my macbook pro can't seem to detect ANY usb drive. I have already selected to "show external disk/drive" on finder's preferences but it doesn't work.
Info:
MacBook Pro with Retina display
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