Samsung U28E590 won't display in 4k MacBook Pro 15" Retina (Late 2014) El Capitan 10.11.5 Displayport->HDMI Possible options for resolution are: 1080P, 720P and 1600x900 As this is a "4K" monitor, this is sub-optimal. Scanning all of the m...view more I need a second monitor for my iMac 4k Hello all, I just upgraded from iMac 2011 to iMac 2015 4k, my second display worked fine on older iMac, on my new iMac the display is stretched, I am using the thunderbolt to vga adapter btw. but my second moni...view more External Monitor - Thunderbolt Blurry? Hi, I'd like to get a Thunderbolt monitor (possibly two) for my MacBook Pro 2015 (El Capitan 10.11.5). Recently, I grabbed a 22" monitor (HP ZR22w) and pluged that into my MacBook using an Apple HDMI to ...view more Second Display not being recognised since updating to El Capitan. Hello All, I have the 2nd Display Malfunction - can anyone help? I have done all the usual even reinstalling El Capitan. I have pasted my EtreCheck. Any help would be much appreciated. Thanks,Andy EtreCheck version: 2...view more Thunderbolt Firmware Update 1.2 reappearing. solution steps not working i have run the firmware update twice, done the cited instructions and Thunderbolt Firmware Update 1.2 Keeps reappearing. anyone else not have this fixed by the solution steps given? i'm on a MacBook Pro (15-in...view more Update Firmware 1.2 keeps appearing I have tried the recommended procedure but the app store continues to keep wanting me to update. The Display appears to have the correct firmware version installed.view more Thunderbolt Display Firmware Update could not complete Is anybody else having an issue applying this update? I keep getting the following error: I've tried turning off my computer and unplugging the display multiple times, but the update always fail...view more Thunderbolt Display - Waking up issue I use a 27" iMac (El Capitan) and I connect two Thunderbolt Displays, and I stay updated with all updates. The issue I run into is when I wake my computer up that one of my Thunderbolt displays sometimes does no...view more Apple LED 27-inch Cinema Display Buzzing Sound Hi, I recently pick up an extra Apple LED Cinema Display on Craigslist and noticed that there was a constant buzzing noise from the fan in the back. The owner didn't mention anything about the buzzing sound when he so...view more How to test if a Thunderbolt Display works Hi, I will be purchasing a Thunderbolt Display on Craigslist. We will meet at a public place, not his home. Is there a way to check and make sure the display works? Is there some sort of menu I can b...view more wrong power connector supplied Just received my thunderbolt display and macbook pro but a bit perplexed to find that the laptop power connector that comes out the back of the display unit is for a macbook not a macbook pro (see picture below ...view more Two Thunderbolt Displays not working under Windows 7 I just got the two Thunderbolt Displays I had preordered delivered and I was shocked to find out that both of them can not work together under Win 7 on my MBP. My Set up : Macbook Pro - 15" i7 - 2011 -...view more Thunderbolt Display USB Clamshell Mode I am trying to use a new Apple Display's (thunderbolt) USB ports while connected to my MacBook Pro (in clamshell mode). To be a bit more explicit below is the configuration that works and the configuration that I woul...view more Thunderbolt Display Problems. I have an Apple Display 27in - the display keeps going in and out, what can I do to fix this? It is happening with multiple macs. I am connecting from monitor to thunderbolt.view more Thunderbolt Display Goes Black Even After Firmware Update Last year I began having issues with my Thunderbolt Display. The screen would go black even though the connection seemed to be working fine: for example, if I would open FaceTime the light on my built-in c...view more Can I use apple thunderbolt with an HP laptop Can I use apple thunderbolt with an HP laptopview more Thunderbolt display - ports not working. Only the display works. Thunderbolt display - ports not working. Only the display works. I have 2 ATDs. Let's call them A and B. I just bought A yesterday (used) from a friend. It worked for 2-3 hours with no problems. I also daisy c...view more Problem with Thunderbird update 1.2 loading Since I did the thunderbird update 1.2, my computer is locking up. It never loaded, and now the message at turn on says "thunderbird display firmware cannot complete" The genius fix is to delete all progra...view more Why can't I connect an Amazon Fire Stick to my Thunderbolt Display with a HDMI adapter? I have a HDMI > Thunderbolt adapter that works fine displaying my computer onto a tv. I was excited to connect my Amazon Fire Stick to my Thunderbolt display with the same adapter, but nothing happens when it's plu...view more My ambient light sensor option disappeared? I have a 2009 Macbook Pro laptop running El Capitan. I use an Apple LED Cinema Display with it. Today, my LED Cinema Display went black the instant I downloaded an app update. After playing with the display I got it t...view more