High speed multifunction port (interface) designed by Intel and first manufactured on a shipping product by Apple. Thunderbolt was developed under the name Light Peak and combines PCI Express with Display Port over one serial connection.

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4
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188 views

Higher kernel_task CPU usage when playing audio through Thunderbolt Display

I noticed today a higher kernel_task CPU usage when playing audio through Thunderbolt Display from my Macbook Pro (early 2011) on OS X Yosemite. Although the CPU usage is not very high (15 - 20%), it ...
2
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86 views

My thunderbolt port on my 2011 MacBook Pro 17" stopped working

Since day one through every os update I have used my MacBook hooked up to my tv as a source for playing movies. Out of the blue one day I hooked in the same thunderbolt to hdmi adapter that I had been ...
2
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0answers
1k views

HDMI & VGA issues with MacBook Pro Retina & Acer Monitor

I'm having a very strange issue. I inherited an Acer monitor from a friend that is full HD, 1080p. Good monitor overall. When connecting ONLY an HDMI cable from my Mac to the monitor, I get no signal. ...
2
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0answers
534 views

Physical keyboard & trackpad stop working on dis/connect of external thunderbolt display

I have a Macbook Pro (Retina, 13", Late 2013) running Lion 10.9.4, that I use with an external thunderbolt display, a bluetooth trackpad, and a USB keyboard -- both of which are connected through the ...
1
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0answers
87 views

Macbook Pro 13 Late 2013, BenQ GW2765HT, and Displayport cable

I recently purchased BenQ GW2765HT to connect my 13 inch rMBP via mini DP to Displayport. After around 1 week of use, the displayport connection is flaky to get properly recognized. Sometimes it ...
1
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0answers
24 views

MacBook Pro shows only pointer when external screen is turned on

I'm using my MacBook Pro (Retina, Mid 2012) in an office environment connected to an external screen (Fujitsu P27T-6 IPS) using the Thunderbolt port. The lid is closed, so it should be in clamshell ...
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0answers
35 views

How do I get all three monitors to work with 2015 Mac mini?

I have a 2015 Mac mini with two monitors hooked up out TB-VGA adapters. A HP and a Compaq. Today I added (or tried to add) a samsung 24" with the HDMI. Since adding the samsung, I can only get my ...
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0answers
85 views

Unable to connect Samsung S22E450 monitor

I'm unable to connect my MBPr 15'' mid 2015 to Samsung S22E450 display using Thunderbolt to DVI adapter. Using this machine no kernel panic occurs. This is the console log: 23/11/15 11:04:32,769 ...
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200 views

Target Display mode: iMac mid 2011 with MacBook Pro 2013 late not working

Hardware & OS LIST list: Mac mid 2011i5 4 GB MacBook Pro Retina late 2013 Thunderbolt Cable 2m OS X El Capitan‎ (both) I'm trying to connect my MacBook Pro with my iMac as extended display. ...
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0answers
213 views

Text is blurry in many apps after disconnecting external monitor

I have a 2015 Retina MacBook pro. Sometimes I connect it to a 24" Dell external monitor via thunderbolt->dvi. Whenever I disconnect the monitor, many apps (chrome, most noticeably) have blurry text. ...
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248 views

Thunderbolt Daisy Chain to Non-Thunderbolt Monitor w/LG 34UM95 at end of chain

I recently purchased a LG 34UM95. I planned to use the Thunderbolt daisy-chain feature to add another non-Thunderbolt monitor (mini DP --> HDMI) as the second link of the chain. However, it doesn't ...
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0answers
152 views

2014 Mac Mini with two mDP-DP monitors

I'm planning to upgrade from a 2011 base model Mac Mini to a 2014 high end Mini (2.8Ghz i5, Iris, 16GB ram) and wanted to see if I could drive two 2560x1600 monitors through the thunderbolt ports with ...
1
vote
0answers
256 views

Dual-Monitor: Second monitor black after sleep mode

I'm using two Elgato Thunderbolt Docks on my MacBook Pro Mid-2012. I connected two displays to them: One HDMI display on each of them. Both are LG-Displays, one a 16:9 and one a 21:9 display. This ...
1
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0answers
67 views

Chromatic Aberration with Mac Mini

I recently bought a Mac Mini Late 2014 intermediate version of the three available. I have the following issue. Sometimes when I turn the Mac Mini on or from standby I get this chromatic aberration ...
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0answers
208 views

MacBook Air: Two external displays using CadDigit Thunderbolt Station

I need to connect two external displays to my 2013 Macbook Air. Each external display has one VGA port and one DVI port. After some search, I found that my best option is the CalDigit Thunderbolt ...
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0answers
159 views

How to persist the display arrangement of multiple thunderbolt displays daisy chainded?

My setup is: MacBookAir, OS X 10.9.4 (13E28) and two Thunderbolt displays. It seems that the arrangement of the displays after reconnecting thunderbold or restarting device is rather randomly ...
1
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0answers
558 views

why does my Thunderbolt display not wake from sleep

When putting my MacBook Pro to sleep with Thunderbolt Display attached, upon waking-up machine...Thunderbolt Display does NOT wake, and I must unplug then plug-in the display for it to return to ...
1
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0answers
745 views

What can cause external monitor to remain on when MacBook Pro Retina goes to sleep?

I have a MacBook Pro Retina, Early 2013, running Mountain Lion with an external monitor connected via a Thunderbolt-to-DVI adapter on the rear Thunderbolt port i.e. the monitor is connected to the ...
1
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0answers
154 views

Can I use the octopus cable to connect a Thunderbolt Display to my 2012 iMac?

I tried connecting a Thunderbolt Display to my 27" iMac (2012) using the Thunderbolt end of the display’s octopus cable, but the display did not turn on and was not recognised by the iMac. Is this ...
1
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0answers
758 views

Black rectangle covers up most of screen, after disconnecting external display

I connected my MacBook Air to an external projector (using a Mini DisplayPort to VGA adaptor) to give a Keynote presentation, enabled screen mirroring, gave my talk, then disconnected from the ...
1
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0answers
2k views

Can the 2011 Mac Mini support 3 displays with DP 1.2 chaining?

Dell u2713H monitor supports Daisy Chaining. as one of the first monitors I've seen that uses DP 1.2 protocol. In essence, I'm asking if thunderbolt supports / enables / works with DP chaining, but ...
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0answers
175 views

Target iMac does not wake up with the main iMac, but works the other way around!

I have two 27inch iMacs, both 2011. When I connect iMac A to iMac B and let it sleep, iMac B's display does not wake up. However, it still shows up in the Displays and I can still play audio through ...
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912 views

iMac - 2nd display not working using thunderbolt - HDMI

I recently bought an LG monitor to use as a 2nd display but my iMac (mid 2011, running Mac OS X Lion) doesn't detect it. It's connected using a Thunderbolt-to-HDMI-cable (which I bought from The ...
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0answers
298 views

Can a Thunderbolt iMac be used in target display mode while booted into Windows 7?

Slightly different than what I'm seeing in search: If I have my iMac booted into Windows 7, can I (via Thunderbolt) use the iMac as a target display from my Thunderbolt MacBook Pro running OS X?
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245 views

Any way to compare Thunderbolt config in picky iMac 21.5“ and happy MacBook Air 11”

Having tried to debug a really annoying 21.5" iMac for a day now, I'd appreciate any hints. The scenario goes like this: We got an iMac 21.5"(Mid-2011) for an auditorium and plugged it in through an ...
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0answers
1k views

Target Display Mode + Teleport with Thunderbolt iMac and Mac mini running Lion

I've set up Screen Sharing, so I can see Teleport is working... But I can't get it to work if I use Target Display Mode. Here's what I tried: ⌘+F2 with Teleport's mouse on the iMac. ...
0
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0answers
4 views

Adobe Premiere Pro: Audio/Playback Issues using USB Audio Codec

For several weeks I've been having incredibly annoying audio issues when using the "USB Audio CODEC" output in Premiere (latest version). I am on a Retina Macbook Pro, with a Thunderbolt cable going ...
0
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0answers
10 views

Why could MBP be making slow churn after RAM update?

I recently upgraded my MBP Early 2011, 2.7 GHz Intel Core i7, RAM from 4GB to 8GB. I'm running Yosemite, so I figured this was a good decision. I've noticed that my MBP now is louder than it used to ...
0
votes
0answers
13 views

How to display non-DV video signal with Firewire input?

Is there any way to get the video signal output from a Displayport (mDP) or Thunderbolt (1 / 2) socket into a Firewire (FW800, IEEE 1394) input? What cables, adapters and drivers or other software ...
0
votes
0answers
12 views

Some Applications Muted on Mac when External Displays Connected

For some reason, whenever I plug in my external displays to my MacBook Pro (Retina, 15-inch, Mid 2014), certain applications seem to mute themselves. My audio output is set on Internal Speakers. One ...
0
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24 views

Finder unresponsive and hanging in Yosemite 10.10.5 with Promise Pegasus R4 (RAID 5 12TB)

I have a bizarre issue, I'm trying to rip into a project and I am halted by Finder in Yosemite. Finder frequently freezes, as in beach ball hour, when I open a clip in a Finder, the Get Info window, ...
0
votes
0answers
28 views

Why is my Thunderbolt Ethernet connection so slow?

I have a Thunderbolt Ethernet connection from my 2015 MacBook Pro Retina (El Capitan) to 1 GBit Switch and from there to a storage device. It is extremely slow in data transfer (something like 2 ...
0
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0answers
53 views

Apple Thunderbolt Display randomly goes black throughout the day

My Mac is connected to two Apple Thunderbolt Displays. The first monitor works without flaw. The second however will randomly turn off its screen 3 to 4 times a day. A quick but annoying fix is to ...
0
votes
0answers
19 views

Is it possible to connect two external monitors with two thunderbolt to DVI convertors?

I read about the limitation for older models but I have a Macbook Pro Late 2015 and I would like to connect two different monitors in the same laptop. Both of my monitors have DVI ports and my ...
0
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0answers
75 views

Resolution problem on external display with Thunderbolt->HDMI adapter

Let me explain problem in quick bullets: What I want: I would like to use ultra wide external display with 3440x1440@50hz resolution with my MacBook Pro (Retina, Mid 2012). I would like to use my ...
0
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0answers
23 views

IOThunderboltSwitch Listener Callback

I have read a previous reply to a question regarding IO ThunderBoltSwitch Listener Callback. Is there a chance this could be a backdoor attempt to access my computer. I opened a URL on an email post ...
0
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0answers
27 views

3xHDMI out of a single Thunderbolt port - 2015 MBP

I'm planning on purchasing 3 HDMI monitors to use as a workstation for my MBP. For the sake of ease and convenience, instead of using the native HDMI + 2 mini DP to HDMI adapters, is there any way to ...
0
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0answers
17 views

Is there a way to have the (automatically adjust) brightness of two thunderbolt displays connected to each other in sync

I have a MacBook Pro Retina with two Thunderbolt Displays connected to it in Daisy Chain mode. Both displays have the Automatically adjust brightness setting on, and the MacBook is closed. Is there a ...
0
votes
0answers
228 views

Reinstall Thunderbolt Firmware on a 27" iMac Late-2012

I have a consistent issue with the "Thunderbolt Firmware Update 1.2" showing up endlessly in the App Store, but more importantly, after installing it earlier today, my Thunderbolt ports no longer ...
0
votes
0answers
34 views

How to properly setup Continuity while using a Thunderbolt Display?

I mostly use my MacBook Pro Retina 15 Mid 2014 connected to an Apple Thunderbolt Display while working at home (this occurred as well with my previous MBPr Mid-2012). Basically, you have this cool ...
0
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0answers
49 views

5k iMac with 2 34 inch monitors

I have a 34 inch iMac 5k (late 2015), configured with the top specs: I'm currently running a 34 inch 3440x1440 monitor linked via thunderbolt. I recently ordered a second one. I've googled around ...
0
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0answers
23 views

My Thunderbolt speakers won't start ever since El Capitan update

Recently, I have updated to El Capitan. Ever since, my Thunderbolt speakers don't work. They probably just won't start on, and the Macbook air speakers are not loud enough.
0
votes
0answers
84 views

Macbook Pro Retina offset problem

I have a 13" 2015, retina MacBook Pro and an Samsung S22C150N external display, connected with an official Apple Mini DisplayPort to VGA adapter. I need to use the MacBook with the monitor, but when ...
0
votes
0answers
95 views

iMac Thunderbolt external monitor black after sleep or blacking out intermittently

We have an iMac 2013 that has a second screen (3rd party) attached via Thunderbolt. Recently the second screen was having problems coming on in the morning when waking from sleep and we had to hit the ...
0
votes
0answers
16 views

Thunderbolt 2: Actual display demuxer (not DisplayPort)?

I recently got myself a 2015 MacBook Pro 13". Now I'd like to connect 2 external monitors to it. As I'd like to use my already existing setup I was looking for a docking station that supports dual ...
0
votes
0answers
43 views

HDMI to DVI-D works only when an additional VGA device is connected at start

I have a problem about connecting DELL P2014H monitor to my macbook pro (13" retina, 2013 late). Monitor does not respond when I connect the HDMI-DVI-D cable but, If I connect HDMI-DVI-D cable and ...
0
votes
0answers
29 views

How can I force OS X to never use display audio?

I work in a lab where it's often common to unhook from a thunderbolt display and go to another's desk and present after hooking into their thunderbolt display. The problem happens when OS X ...
0
votes
0answers
42 views

How to use a Mac Mini to power 4 tv's

We are looking to setup monitoring and a dashboard at work, and want to use a Mac Mini powering 4 Samsung 50" TVs (1080p). According to the official Apple Spec, it only supports 2 displays using the ...
0
votes
0answers
238 views

Mac Mini volume control disabled when using thunderbolt for display

I have a Mac Mini (late 2012) running the currently latest osx, El Capitan, and as display I use a Dell U2713H connected via thunderbolt (to a DisplayPort on monitor). This configuration is needed to ...
0
votes
0answers
93 views

Booted from Cloned drive works slow

situation is, i have to give up the Mac... Macbook Pro (Retina, 15-inch, Late 2013), 2.6 GHz Intel Core i7 processor, 16 GB 1600 MHz DDR3 RAM/Memory, Intel Iris Pro 1536 MB graphics, & a 1 TB ...