1366x768 Resolution Missing on Thunderbolt Display

I've updated my MBP to Mavericks but I haven't needed to change the screen resolutions often. This changed when I installed Parallels, which made use of the system-available resolution settings to create its own set of virtual resolutions.
This caused a lot of issues because I've noticed that there was no 1366x768 option in Parallels! Now to achieve this specific resolution I had to stretch the window to the size of 1366x768.
What concerns me is that this ubiquitous resolution is not available on the Mac side of things. Instead, a nonstandard 1344x752 resolution is there which doesn't cut it at all for me. Even more baffling is that 1366x768 was available in the past but has been removed!
I tried to use SwitchResX to add the resolution to the list, but this ended up in the Thunderbolt Display blacking out in clamshell mode. When out of clamshell mode the display ran concurrently with the laptop display, but the 1366x768 resolution did not work at all.
Is anyone else experiencing this and does anyone know how to remedy it?

I'm assuming that you have checked for and installed all available software and firmware updates...
Have you checked to see whether there are other features that are no longer working? Do the USB ports, FaceTime camera, Ethernet port still work? You can also pull down the Apple menu and select 'About This Mac', then click on the 'More Info' button, then click on the 'System Report' button. If you click on the USB section you should be able to see each of the Thunderbolt Display USB devices listed. They include the USB Audio, FaceTime HD Camera, and the display itself. If they are missing then it's time to take your display in for further evaluation.

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Welcome to the Apple Support Communities
You can get the maximum resolution for the Thunderbolt Display (2560x1440) on both monitors, but the graphic performance may decrease

Thunderbolt display issues

I went to the Apple store yesterday with my Macbook Pro to test a Thunderbolt Display.
The store assistant attempted to demonstrate it to me (I say attempted!), but he couldn't get it working. Basically, when he connected my MBP to the display with the Thunderbolt cable, it worked to an extent, but it wouldn't....
- fill the full resolution of the Thunderbolt display (2560 by 1440 pixels) in Mirror mode - my graphics card is meant to support external displays up to 2560 by 1600 according to this - http://www.apple.com/macbookpro/specs.html
- it also wouldn't work when we closed the lid. The TBD just went blank.
We tried it on two different Thunderbolt Displays. My MBP has all the updates required as far as I'm aware.
Can anyone suggest what we might have been doing wrong? Does my Macbook Pro need to be connected to a power outlet to work with the Thunderbolt display correctly?
By the end of the hour in the shop the shop assistant suggested that it may be a problem with my graphics card? I can't decide whether he's right or he just didn't know what he was doing!
Also, since then, when I open iMovie on my MBP, the bar at the top of the screen (the one that says what program you have open) says that iMovie is open, but it does not display the actual workspace itself. When I click on Mission Control the iMovie workspace appears, but then minimises again when I click out of mission control.
Any help would be great. That's the last time I let an Apple store assistant muck around with my computer!

Same issue with this thred:
https://discussions.apple.com/thread/3340067?tstart=0
We are all waiting solution from Apple.

Macbook Pro Retina trouble with projector after using Thunderbolt display

I used my macbook Pro Retina with my Thunderbolt to VGA adapter all through the fall, and never had any trouble with it. Just before Christmas I got a Thunderbolt display.
Since that time, whenever I connect the projector, I get a black screen. I can see and move the mouse, but nothing else. Other computers still work with the projector.
I'm not certain if the Thunderbolt Display has anything to do with this or not, but it's just the timing that it happened.
Grateful for anyone that can offer help!

It might be that the Thunderbolt output is set to the resolution of the Thunderbolt display, which the VGA adapter probably cannot display correctly. You can toggle between the video display modes using Command-F1... This will toggle the output between Mirroring and Extended Desktop. Using Command-F2 will allow you to attempt to detect displays. It might auto reset to the correct resolution using Command-F2. If you can get the VGA out to display using extending desktop then you can change the resolution to work properly with the VGA projector.

Citrix receiver on MBP and thunderbolt display get stalled due to screen resolution

Running citrix apps on MBP together with Thunderbolt display. Citrix app will launch but will not operate as is gets resolution error message. Also after upgrading to Mavericks launching the Citrix app only work 1 out of 3 time (not sure at all of the reason it is not always not working).
I have the latest Citrix receiver version 11.8.2 - Java 7-45 also up to date.
Anyone seen similar issue and got it resolved ?

I am having a similar issue where I can log in to our server but once citrix viewer opens i get a black screen and thats it. No resolution errors though. Before the Mavericks update all worked just fine.
I have a MBP, citrix receiver 11.8.2 and java updated as well.

Thunderbolt display: devices not discovered after using Mini DisplayPort–to–VGA adapter

I have an interested problem related to using my MacBook Air in clamshell (closed) mode, connected to a Thunderbolt display. The problem appears to be related to moving my MacBook air between my office and my home.
At the office, I use the MacBook Air with an external VGA display, connected via the Mini DisplayPort–to–VGA adapter. At home, I use the MacBook Air together with a Thunderbolt display. An Apple USB keyboard is also connected to the display.
Mini DisplayPort–to–VGA adapter implicated
The following sequence of events causes the problem to occur:
Use the MacBook air (open) together with a VGA display, connected via a Mini DisplayPort–to–VGA adapter (depicted at right);
Put the MacBook Air to sleep by closing the lid, and disconnect the Mini DisplayPort–to–VGA adapter (I am not sure if the order of these two steps is significant—I usually perform them almost simultaneously when packing up my MacBook Air and getting ready to leave the office); and
With the MacBook Air still closed, connect it to a Thunderbolt display with a connected USB keyboard.
At this point, I would expect to be able to wake up the MacBook Air by tapping on the space bar of the keyboard. However, what I have observed is that this does not wake the MacBook Air.
I can wake the MacBook however by moving or clicking a Bluetooth mouse that is paired with the MacBook Air.
At this point, although the MacBook Air is awake, and the display is working, the USB keyboard connected to the display still does not work. This is the problem, in a nutshell.
Unplugging the USB keyboard from the display, and plugging it back in causes the MacBook Air properly to identify the keyboard.
I used Apple System Profiler to save a list of identified devices at two points in time:
Immediately after waking the MacBook Air by moving the Bluetooth mouse (at which point the USB keyboard was not working); and
After unplugging and plugging in again the USB keyboard (at which point the USB keyboard worked fine).
Many devices are enumerated in the second list that are missing from the first. For example:
Keyboard Hub@fe110000 <class IOUSBHubDevice, id 0x1000378ef, !registered, !matched, inactive, busy 3 (37993 ms), retain 6>
AppleUSBHub <class AppleUSBHub, id 0x1000378f2, !registered, !matched, inactive, busy 1 (37987 ms), retain 6>
IOUSBInterface@0 <class IOUSBInterface, id 0x1000378f4, !registered, !matched, inactive, busy 1 (37986 ms), retain 6>
Keyboard Hub@fe110000 <class IOUSBHubDevice, id 0x1000378f6, registered, matched, active, busy 0 (7 ms), retain 10>
AppleUSBHub <class AppleUSBHub, id 0x1000378f9, registered, matched, active, busy 0 (1 ms), retain 9>
IOUSBInterface@0 <class IOUSBInterface, id 0x1000378fb, !registered, !matched, active, busy 0, retain 7>
Apple Keyboard@fe112000 <class IOUSBDevice, id 0x1000378fd, registered, matched, active, busy 0 (112 ms), retain 11>
and many child devices…
Using the Mini DisplayPort–to–VGA adapter appears to be a necessary step to causing this problem to occur. If I merely disconnect the MacBook Air from the display, let it go to sleep, and then reconnect it again, the USB keyboard will work immediately and can be used to wake the computer from sleep.
Some devices are discovered even when the computer is in sleep mode. This is how it should work.
The problem appears to be that when a Mini DisplayPort–to–VGA adapter has been used since the last time the computer was connected to a Thunderbolt display, the MacBook air does not discover devices completely when it is again connected to the Thunderbolt display while in sleep mode.
Can anyone else reproduce this problem?

Hi glraczon.support,
It sounds like the external display you are using (projector) operates at a smaller resolution than your MacBook Pro. You may want to configure the display preferences in System Preferences for the external projector.
Here is an article that may help you with that process:
OS X Mountain Lion: About the Display pane of System Preferences
http://support.apple.com/kb/HT5369
Thanks,
Matt M.

I need help getting my Thunderbolt display to work with Windows 7 through Bootcamp.

I recently bought a thunderbolt display and it works great in my Mac environment. But I recently added Bootcamp and Windows 7 (I need since my Broker Dealer only uses Internet Explorer). Unfortunately, I can't seem to get Windows to recognize my Thunderbolt display. Today, I spent 2 hours with a very kind advisor from Apple Support but we didn't have any success.
Here's my setup:
MacBook Pro (purchased new in 2011) with i7 processor
Thunderbolt Display
Lion OS (all updates installed)
Bootcamp with Windows 7 Ultimate 64-bit (all updates installed)
With the help of Apple Support, I downloaded and reinstalled (through the repair option) all the Bootcamp drivers. I shut down my computer, plugged in the Thunderbolt display, turned it on and booted into Windows 7. When the Windows Welcome screen appears, it shows on my Thunderbolt display for about 2-3 seconds. But the thunderbolt quickly goes black. My MacBook Pro changes to a 640x480 resolution and the Thunderbolt remains blacked out--with no signs of even a single flicker. Once the computer finishes the start-up, my MacBook Pro remains in a 640x480 resolution, with no option to change the resolution (it's grayed out in Windows control panel). If I unplug the Thunderbolt cable from my MacBook pro, the high resolution of my MacBook pro snaps back to normal.
To me, this seems like some type of driver problem but I must be missing something simple because it appears that Thunderbolt works with Bootcamp and Windows 7--based on some of the readings I've found here in the Apple support community. I'm most appreciative of anyone's help here.

Moving the discussion to OnLocation
Thanks,
Atul Saini

Late 2011 MBPr, Bootcamp w Win8 & 27" Thunderbolt Display

Hi there,
I have a 17" late 2011 MBPr. Today I purchased a Thunderbolt display. On MacOs everything is working just fine. I have checked for updates and my system is up to date. Also when I run Windows 8 as a VM (Parallels) the Thunderbolt Display works just fine.
However when I boot into Windows 8 using Bootcamp my Thunderbolt display is recognized, but works at a resolution of 480 x 640 pixels!!! The display on My MBPr is the main display and the Thunderbolt Display is configured as an extended display. I cannot change the resolution.
Any ideas how I can enable the native resolution? Anything I might be missing?
Thank you!

I defintely have the Boot Camp drivers installed. I am just not able to see which version. I remember I installed them when Windows 8 support came out, which is not too long ago a couple of months at most.
I see on the support site that Version: 5.0.5033 is available. I suspect this is the version that I already have installed.
Since I cannot find the version I am running I will download and install these drivers just in case.

How can I tell my MacBook Air to automatically detect my Thunderbolt Display?

I have a brand new MacBook Air (13", mid-2011) running 10.7.2 (and all updates) and Thunderbolt Display (with firmware 22.2, the latest)
When I plug the thunderbolt plug into the port, I expect the MBA to recognize the display and automatically start using the display based on the last settings (arrangement, etc.) This is how every other display (Apple or not) has worked with a MacBook I've owned. This is one of the nice little touches that I really appreciate about Apple products.
What actually happens when I plug in the thunderbolt display is.... nothing. The MBA will work happily as if there is no external display plugged in until I bring up the Displays control panel and "Detect Displays". This is contrary to how it worked in the past and based on that experience, I consider the current behavior to be a bug.
Is there some setting I'm missing to make this work properly? It is pretting annoying to have to many times a day (in the morning and every time I take my MBA away from my desk). Is this a known issue that Apple will be fixing soon?
Thanks,
Paul Philion
Acme Rocket Company
Mac Owner Since 1985

It's definitely not supposed to work like that...when you plug the display in, it should just turn on and adjust your displays. It works like that on my MBP. Kind of a silly question, but do you have the MagSafe from the display plugged in your MBAir too? Thats a requirement. Beyond that, it should "just work."
Not sure if there is some setting to enable...i haven't seen it. Call to support?

How to connect the macbook with thunderbolt display 27" to TV with RGB port?

Hi,
I have the following equipments in hands:
1. Macbook PRO 15 inch with 1 thunderbolt port, OS is Mavericks 10.9.2
2. Apple Thunderbolt display 27" identical to this : http://www.apple.com/displays/
3. A Samsung TV with RGB port, & HDMI port.
I want all these displays ( macbook, Apple thunderbolt display & the Samsung Tv) connected at the same time, I had a trial to connect them using a minidispaly adapter to RGB port & HDMI port in the TV but it didnt worked.
Please help!
Thank you.

The Thunderbolt dock adds extra ports:
HDMI (up to 2560x1600 with the Elgato, 1920 x 1200 with the CalDigit)
3 USB 3
Ethernet
Audio in
Audio out
You could also use a Belkin Thunderbolt dock.
<http://www.belkin.com/us/p/P-F4U055/>
It includes a FireWire port, but no HDMI port, so would need a Mini DisplayPort to HDMI adapter (1920 x 1200 max) for the TV. This would use the second Thunderbolt port, so the Belkin dock has to be used with the port on the back of the Thunderbolt display, not between the computer and display.
If you don't need the extra ports, use a Thunderbolt hard drive (with two Thunderbolt ports)
<http://www.seagate.com/external-hard-drives/desktop-hard-drives/backup-plus-desk -mac-thunderbolt/>
This can be your Time Machine drive. Connect the Thunderbolt display to the computer, one port of the drive to the port on the back of the display, and a Mini DisplayPort to HDMI adapter to the second Thunderbolt port on the drive.
You will have three displays with differing resolutions, so mirroring is not going to fill each screen at full resolution.

"Arrangement" tab missing, can't display Macbook on HDTV

Hello,
I have a mini-DVI to HDMI adapter, an HDMI cable and an HDTV. I'm trying to hook up my Macbook to the HDTV, but I'm having trouble because the "Arrangment" tab is missing in the Display settings.
The crazy thing is that I've successfully mirrored displays countless times before, with the same cables, Macbook, and HDTV. But one day the "Arrangement" tab decided not to show up, and I'm at the end of my rope trying to figure out what happened or what I did differently.
The HDTV recognizes that the HDMI cable is plugged in, and the Macbook recognizes when it is connected to the TV as well, flashing blue when I plug or unplug the mini-DVI adapter. I've tried everything I can think of: restarting, unplugging everything and plugging it all back in, sleeping and waking the computer, trying to connect the Macbook while plugged in and while just running on the battery, turning everything off before disconnecting and reconnecting the cables - everything. No matter what I try, clicking "Detect Displays" still does nothing, my HDTV's screen remains blank, and the "Arrangement" tab remains absent.
I've done everything short of buying new cables, which I don't want to do because I know that what I have works!
Any suggestions? I've really missed watching things on my HDTV. Thanks for your time!

After much fiddling with display resolutions and TV setting, and several calls to Apple help, problem was found to have a really basic solution: replace the RCA connector cable. The old one was shot.

How do I connect a Thunderbolt display to a 21UX Cintiq Wacom tablet with a single link DVD-I connector?

I just bought a brand new thunderbolt display along with a 2013 mac pro and I'd like to hook my 2 year old 21UX Cintiq Wacom tablet directly to the display using the thunderbolt port on the display itself. Currently, I have the Cintiq daisychain connected directly to the mac pro using an Apple mini display port -> DVI-D (dual link) adapter, which is then connected to a DVI-D (single link) -> DVI-I (dual link) adapter, which is then finally connected to the Cintiq's DVI-I (single link) connector (this is permanently attached to the Cintiq and can't be traded out). As you can imagine, what has resulted is a lot of color variations between the Cintiq and Thunderbolt displays (that color calibration in system preferences has not been able to remedy) as well as some flickering of both displays at random intervals. I'd like the colors of the displays to match as close as possible and for the flickering to stop, of course, and from what I understand, connecting the displays directly with as few adapters as possible is the best way to do that. Unfortunately, most of my searches have not helped very much. Here is a photo of my daisychained set-up to better assist anyone who thinks they might be able to help:
Lastly, just in case: the mini display port to DVI adapter is not compatible with the Thunderbolt display's port, which is why it is connected to the mac pro, so I imagine a solution might require searching for an adapter from a different manufacturer, if such a thing even exists. If not, what other solutions would anyone suggest to get the colors of the displays to match more closely and the flickering to stop as well as lessen the amount of adapters I am using?
Thank you!

From you picture, you have a Mini DisplayPort to Single-Link DVI-D adapter. (The last in DVI-D is for "Digital", not "Dual-Link".)
You don't need dual link unless the resolution is greater than 1920 x 1200.
Mini DisplayPort devices or adapters won't work plugged directly into a Thunderbolt display. You need a Thunderbolt disk or dock (with two Thunderbolt ports) connected between the Thunderbolt display and the Mini DisplayPort adapter.

My MacBook Pro appears to run sluggish when connecting to a Thunderbolt Display

Here are my specs
Hardware Overview:
Model Name:          MacBook Pro
Model Identifier:          MacBookPro8,2
Processor Name:          Intel Core i7
Processor Speed:          2.2 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          6 MB
Memory:          16 GB
Boot ROM Version:          MBP81.0047.B27
SMC Version (system):          1.69f3
Serial Number (system):          [REMOVED]
Hardware UUID:          [REMOVED]
Sudden Motion Sensor:
State:          Enabled
AMD Radeon HD 6750M:
Chipset Model:          AMD Radeon HD 6750M
Type:          GPU
Bus:          PCIe
PCIe Lane Width:          x8
VRAM (Total):          1024 MB
Vendor:          ATI (0x1002)
Device ID:          0x6741
Revision ID:          0x0000
ROM Revision:          113-C0170L-573
gMux Version:          1.9.23
EFI Driver Version:          01.00.573
Displays:
Thunderbolt Display:
Display Type:          LCD
Resolution:          2560 x 1440
Pixel Depth:          32-Bit Color (ARGB8888)
Display Serial Number:          [REMOVED]
Main Display:          Yes
Mirror:          Off
Online:          Yes
Rotation:          Supported
Connection Type:          DisplayPort
When I play games like StarCraft 2 on my MacBook Pro (without my Thunderbolt Display connected), the game runs GREAT
When I play games like StarCraft 2 on my MacBook Pro (with my Thunderbolt Display connected), you notice the mouse responding slower (I even lowered the graphics settings to it's lowest and still get the same results)
When I play games like Safari on my MacBook Pro (without my Thunderbolt Display connected), the game runs GREAT
When I play games like Safari on my MacBook Pro (with my Thunderbolt Display connected), you notice the mouse responding slower
The above happens with any application. This even occurs after a fresh reboot. i unplugged all my periphals from my MacBook Pro and Thunderbolt Display
I updated my OS and applications.
I monitor Activity Monitor and notice nothing unsual about runaway processes.
Just so everyone knows. This is a 2011 MacBook Pro.

I have the same exact model as you, as well as an Apple Thunderbolt Display. I don't play any games, so I wouldn't notice any degradation there but I do run a lot of GPU/CPU/RAM intensive apps and have experienced no problems with the TB display connected.
We have the same configuration, OS, everything. We may just be running different apps. I do have 16GB of RAM and a SSD so that may mean that I'm just not able to notice any slowdown at all.
I'm not sure what your problem might be - I would suggest contacting AppleCare to see if they've documented problems such as the one you're having.
Clinton

How can I automatically "retract" all windows from my Thunderbolt display back to my MacBook Air when I disconnect the display, esp if the Thunderbolt is the desktop with the white menu bar?

I am in and out of my office with my MacBook Air. I would like to set it up so when I plug in my Thunderbolt display in the office, the Thunderbolt display has my desktop, menu bar and the open windows. If I set the Thunderbolt display to mirror by MacBook Air it adjusts to the lower resolution of the MacBook Air, which is a waste of a cool monitor. I can set it up as an extended desktop and drag the white menu bar to the Thunderbolt display so it displays my desktop but if I then disconnect my MacBook Air, the menu bar is absent and all the windows that were seen on that display are absent, as if it I was still attached to the larger display. The only way around this is to go to Thunderbolt display preferences, drag the white menu bar back to the smaller display and manually drag all windows to the smaller display before disconnecting. Doing this multiple times per day is a real pain. Is there a way to set my MacBook Air to recognize when it is attached to the Thunderbolt display and automatically my desktop and all open windows to it and then do the same process in reverse when I unhook it?

It's definitely not supposed to work like that...when you plug the display in, it should just turn on and adjust your displays. It works like that on my MBP. Kind of a silly question, but do you have the MagSafe from the display plugged in your MBAir too? Thats a requirement. Beyond that, it should "just work."
Not sure if there is some setting to enable...i haven't seen it. Call to support?

1366x768 Resolution Missing on Thunderbolt Display

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