Questions tagged [thunderbolt]

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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Supported USB-C Alternate Modes on MacBook Pro (15-inch, 2016)

I am curious exactly what USB Type-C alternate modes (and variations of those modes) are supported on the MacBook Pro (15-inch, 2016). I've done some searching on the internet, but I've been unable to ...
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296 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 ...
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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 ...
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114 views

success with ASUS MB169B+ thunderbolt 2MBP?

Has anyone successfully used the ASUS MB169B+ with thunderbolt 2 Mac Book Pro? i personally have a late 2015 MBP and i see mixed reviews and explanations all over the place. i tried this before with ...
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39 views

Can I use both Macbook built-in GPUs on separate displays

My Macbook has 2 GPUs: Radeon Pro 560 4096 MB Intel HD Graphics 630 1536 MB Is there any way to use "Radeon Pro 560 4096 MB" on Apple Thunderbolt Display and the other one "Intel HD Graphics 630" ...
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409 views

Headless Mac Mini can display 2560x1440 after being plugged into, then unplugged from an external monitor, but only goes up to 1920x1080 after restart

I am using a Late 2012 Mac Mini exclusively through Screen Sharing on my MacBook (Both on 10.13.4). The only way I could get the Mac Mini to full resolution was to: Close connection from my MacBook ...
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91 views

All screens go blank when I plug in an external display on Macbook 15" Retina mid-2014

I have a Macbook Pro 15inch Retina mid-2014. I always use an external display when not on the move. When I plug in an external display, at home or at work, both the built-in display and the external ...
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594 views

Watch AppleTV and XBOX One on my LG UltraFine 5k / MacBook Pro?

I have searched high and low, but can't find a good solution. Any help is appreciated! I have a MacBook Pro 2016 w/TB. I have the LG UltraFine 5k monitor, which I absolutely love. The resolution, ...
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968 views

Unable to use WiFi after/during using thunderbolt ethernet adapter

when I use my thunderbolt ethernet adapter I'm not able to connect to the WiFi, either when the adapter is plugged or not. I tried to check for errors in /var/logs/wifi and I got this: Wed Apr 26 16:...
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13 views

Emulating a thunderbolt drive backed up by a disk image on a booted mac

Is there an way to make a disk image on a booted mac show up as a storage device on the Thunderbolt bus ? I know it is possible to put the mac in Target Disk Mode and then the whole internal drive ...
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423 views

Forward-looking dock/hub for 2012 Macbook Pro Retina

My main machine is a 2012 Macbook Pro Retina, AKA MacBookPro10,1. Its fastest ports are good ol' fashioned Thunderbolt 1. I would like a dock for it. I would use such a setup with a keyboard, monitor,...
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2k 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 un-...
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404 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 ...
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4k 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. ...
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992 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 ...
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Are USB ports on a Thunderbolt dock inherently more reliable than USB ports on a USB dock?

This question refers specifically to the use of external 2.5" drives, spinning or ssd. External drives on usb hubs we all know are very flaky, even for powered hubs. Surprised I couldn't find an ...
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113 views

Can an eGPU work on Boot Camp with a Thunderbolt 2 port?

I aim to purchase an external GPU (likely this: https://amzn.to/2UvNTeh) and am wondering if a Thunderbolt 2 port will work with an eGPU on Windows 10 Boot Camp. I know there is a file for the macOS ...
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95 views

Imac12,2 thunderbolt firmware issues

I am running high sierra and am trying to use a antelope orion 32+ with this system through thunderbolt. The device get's picked up in my system info and the port is in use. It is impossible for ...
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How can I debug an unrecognised display in High Sierra?

My external monitor recently stopped being recognised by my MacBook Pro (Early 2011 - 8,2, High Sierra, 10.13.6) I have reset PRAM / SMC and tried a number of troubleshooting steps as outlined in the ...
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292 views

Use Apple monitor as second monitor for windows pc

I've an Apple monitor 27' with thunderbolt port, such the one in the picture below. Do you know how if it could be used as external monitor for a windows pc, that has not thunderbolt port?
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iMac doesn't see external bootable SSD on startup

I have an iMac 2013 with HDD and I recently upgraded it with extarnal SSD connected via Thunderbolt. It works pretty well but sometimes when I turn my iMac on, it shows a black screen with text like "...
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192 views

Is it possible to use eGPU on an external monitor and another monitor plugged right into the mac which can use internal gpu

I'm using a late 2016 15-inch Macbook Pro with a Radeon Pro 455 internal gpu, a sonnet Radeon RX 580 eGPU, and three external monitors. Because the three monitors are connected to the to the eGPU, ...
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58 views

External monitor not properly recognized on iMac pro

I have an external monitor for my iMac Pro. It is connected via an USB-C to Displayport adapter from Moshi. Unfortunately, it behaves not optimal: If the monitor is switched on while the iMac is ...
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25 views

Second monitor not working on startup

I have a 2017 iMac 21.5" 4K with Retina display. My Mac is connected to a second 4K monitor using a Thunderbolt 3 to DisplayPort cable. If I connect the two of them there is no problem, everything ...
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MBP 13" 2017 nTB external display issues when used with 2 DELL external displays

I have a MBP 13" nTB 2017 which i am intending to use with 2 DELL monitors (U2414H and U2417H) as extended desktops. However, i am facing some weird issue with the display issues shown in this video. ...
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32 views

Reconnect Thunderbolt programically

I have a display connected via Thunderbolt port to my MacBook Air. The cable is Thunderbolt to HDMI. Whenever I wake the computer up, it freezes intermittently, until I either reconnect Thunderbolt ...
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362 views

Macbook Pro Retina 2013 Thunderbolt ports not working

I've run into a problem with my Thunderbolt ports on my Early 2013 Macbook Pro (Retina). Neither port will work. I have a genuine Apple Thunderbolt to Firewire 800 adapter and a Firewire 800 to 400 ...
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36 views

Charger and two external displays on MacBook Pro without touchbar

The current MacBook Pro without TouchBar has only two USB-C ports. It is possible to connect two external 4k displays (see https://www.apple.com/macbook-pro/specs/ Video Support). What dongle or ...
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171 views

Mac Mini with x3 Apple Displays/Monitors. Adapters, cables and configuration puzzle

Anybody successfully attached (or know how to attach) x2 Apple 30" Cinema displays (Male DVI) and x1 Apple 24" Display (Male Mini DisplayPort) to a Mac Mini 2012 (which has the following connections ...
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685 views

Wired Apple keyboard does not work on only one Thunderbolt port - Macbook Pro 2017

I have a 2017 Macbook Pro 13 inch without the Touch Bar. I am using this dongle: https://www.apple.com/shop/product/MJ1K2AM/A/usb-c-digital-av-multiport-adapter When plugged into the port closest to ...
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3k views

External Monitor not detected on Macbook Air early 2015, with thunderbolt 2 + HDMI

I have always been wanting to connect my macbook air to an external monitor, so after researching the best types for macbooks, I figured connecting my macbook via HDMI to a monitor would work. ...
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264 views

Why does my MacBook Pro (2011) lose Wi-Fi connection when connected to Thunderbolt Display?

My MacBook Pro (2011) loses Wi-Fi connection when connected to a Thunderbolt display. This problem developed a few months ago -- prior to this, I never had any problems with Wi-Fi. Now, when I connect ...
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52 views

How to Create Virtual Bootable Thunderbolt Drive

Considering the speed and versatility of Thunderbolt, it can be very useful to boot from a thunderbolt device on a Mac. Would it be possible to use a disk image on one Mac to create a virtual ...
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194 views

Looking for a right angled connector for my 15" Touchbar MacBook Pro

Currently I have an LG Ultra Fine 5K Display and a MacBook Pro with TouchBar. I have one cable connecting my laptop to the monitor that takes care of power, display and USB. I'm using the cable that ...
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297 views

Unreliable Thunderbolt 2 startup disk

I have attempted to improve the performance of a Mid 2011 27" iMac by booting from an external Thunderbolt SSD, specifically a Transcend 256 GB StoreJet 500. It may or may not be relevant that this ...
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956 views

Mac resets after waking up

I have MacBook Pro Retina with Touch Bar; macOS 10.13.1. Sometimes when I wake up my Mac by pressing TouchID it is turning on monitors then just resets. I have two Apple USB-C to VGA adapters, one ...
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49 views

Prevent iMac from powering down TB3 port when it goes to sleep?

I have a FW400 audio interface connected to my '17 iMac via some adapters and the TB3 port on the computer. When the iMac goes to sleep it's apparently powering down the TB3 port which in turn powers ...
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553 views

Can I output my sound to my Thunderbolt Display AND my Macbook Pro?

I work each day from a Macbook Pro, connected to a thunderbolt display. I keep my laptop open so that I can have two displays at once. From the top-bar settings, I have the option to toggle my sound ...
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92 views

Audio when connecting to and from monitor

I have my monitor Dell P2415Q connected through thunderbolt and the speakers connected through aux to my Dell monitor, so that I don't then have 5 cables going into my mac instead of 4 (Dell USB Hub, ...
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220 views

HDMI macbook air 2011

I'm having issues with my macbook air 2011 HDMI connection. I am connecting through thunderbolt. Here is the problem; sometimes my mac connects to HDMI. Most of the time, it does not. Once it is ...
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2k views

How to connect two LG 27UD88 to single thunderbolt 3 port

I have late 2016 MacBook Pro 13, which has thunderbolt 3 and according to specification can chain two 4k monitors. So if that's correct, how would it be possible to connect two LG 27UD88 monitors over ...
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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 work....
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307 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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756 views

Issues using Firewire sound card with Thunderbolt adapter

I was using a Saffire Pro 40 card on a macbook via FireWire. I now need to use it on a mac mini and it only has Thunderbolt ports and no Firewire. I've got a Firewire to Thunderbolt adapter and ...
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254 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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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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238 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 ...
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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 ...
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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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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 ...