Thunderbolt Display will not wake up after sleep!!!!!!

Hi Clintster:

What are connecting to your TBD?

My System is:

MacBook Pro (13-inch, Mid 2012)

2.9 GHz Intel Core i7

8 GB 1600 MHz DDR3

Intel HD Graphics 4000 1024 MB

Yes Sky King. I connected my mid-2012 13 inch MacBook Air (2 GHz i7) to the TBD with a Apple Store TB to TB cable. The TBD lit up. The power side of the hardwired TBD cable always worked (I could charge the MBA with the cable). After it came "back to life" for a few days, I plugged the regular TBD thunderbolt cable into the MBA and it worked long enough to perform the firmware update. I was able to use that cable for about 24 hours before the TBD went dark again. I used the TB to TB cable again and the monitor lit back up right away and continues to work.

My problem feels like a cable pinching problem with the hardwired cable. The spread between the power cable and the TB side of the hardwired TBD cable is tight with the 13 inch MBA. The cable is taut and I have to twist the cable a bit to make it fit.

I have a second TBD that was purchased at the same time. It has never given me a problem. I daisy chained the TBD's when I first purchased the monitors. The problem with the one monitor started a few months later. The monitor connected to the MBA went dark. I switched the monitors so the other monitor was connected to the MBA and both worked. If I had to guess, it is the stretching and twisting of the cable that caused one of my monitors to stay asleep initially. I think the cable relaxes and works intermittently.

Knock on wood, but the TB to TB cable has worked. I haven't tried to daisy chain the monitors together since I use the "good" TBD for a Mac-Mini. But if was going to try, I would use the good monitor and connect it to computer. I would use the TB to TB cable between the monitors and hope it worked.

Good luck all. It is certainly a frustrating problem. I should have tried the cable fix earlier. I assumed the monitor was toast. It's great having it back up and alive.

Here's the problem I have. If you use a TB cable connected to your mac and then to the TBD, you lose the thunderbolt hub daisy chain. If I didn't want to have a TB hub monitor, I would have purchased something for hundreds of dollars less. Then you still have the risk of the usb hub to eject devices if something else goes wrong. I purchased two new TBDisplays less than a year ago and I'm still dealing with tech support going on 9 months. I'm get tired of trying this work around and the next. As of now - I want to return these things and I'll go elsewhere for my displays. Apple why do we have to screw around with work arounds and try this......or try that........ Just admit there's a problem and recall these things. I'm very tired of screwing around.

Agreed. I have been dealing with a T2 rep from Applecare for two months with the same response... try this or wait for this and the results haven't changed. Called yet again over a week ago and was told they would have something for me the next day and I'm still waiting on a response. Obviously there is an issue with this display and tinkering does not solve anything. Replace it or refund it should be Apple's mantra and ours.

Spent months trying to get a resolution to this!

Anyway now Resolved... See https://discussions.apple.com/thread/5486283?start=30&tstart=0

Download and run app from ‘98k3pr’ issued 27th Dec 2013 08:37

Thanks for the suggestion, but I found this thread months ago and tried it but to no avail on my set up.

I tried that fix back a couple months ago. The "fix" lasted a day or two, then back to non-wakeee-wakeee. The problem still exists.

I had the same (and even worse) issues: TBD not waking up from sleep mode, dock not showing up, etc...

I solved the issue by resetting the systems management controller (SCM) as described here:

Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support

Been there, done that. After a couple days, I was back to non-waking TBDisplay. I've tried every method mentioned in either the forum chats or from Apple Tech support folks. The only thing I haven't tried was upgrading to Yosemite. Since other folks are reporting the same problems under Yosemite, I haven't gone there yet. I'm not one to fix something that isn't broken yet. So I'm waiting for the OSX to be updated a few times while early users work the bugs out. My Tech person suggested that I make a new partition and install Yosemite on that drive to try out. But for the last two weeks, my tech person isn't returning emails or calls. So I'm guessing they don't have an answer and are just dumping these TBDisplay problems and moving on to folks that are more important. Why else would they stop providing support. Both of my TBDisplays are protected with Apple Care policies. So they aren't making money on taking my calls. They have bigger fish to fry I guess.

In a word, ditto.

okay... :-/

well, I had the problem with Mavericks for a couple of days now, then updated to Yosemite and the problem still existed.

But resetting the SCM worked for me. For now...

I have a Thunderbolt chain running through two TBDs to a RAID drive. Only one TBD will work. The other, even after being cleared at the Genius bar, turns off and will not turn on. In addition, the RAID drive keeps getting pushed off the system with a message that it was not properly "ejected".

No idea what is causing this. Have disconnected the RAID drive, and placed the second $1,000 TBD in the corner to gather dust. I've read through all this entire thread, and several others, and there does to appear to be any solution to this problem. The reality is that the system just does not work as advertised.

Edward, Have you tried this that I posted a while back? I have not had this problem ever since in Mavericks and Yosemite.

I have not had any issues after unchecking the option "Put hard disk to sleep when possible" in the Energy Saver control panel. This was brought to my attention in another post, I tried it and it works. Agreed, it should not be like this, but at least it works until another better solution is found.

I've tried that and still have the same problems. No responses from Apple after tech's have tried all of these quick fixes. They won't return phone calls or email requests for help.

Macbook Pro Late 2011 I7 w/ 16GB RAM here. I have the same problem. After I wake my laptop from sleep, if the display doesn't wake immediately, I must apply a workaround each time it wakes, until I reset the PRAM/SMC. I have Yosemite with all the latest OS updates and Thunderbolt firmware updates.

Here are the temporary fixes that I've tried:

1. Resetting SMC/PRAM. Fixes the problem for 1-2 days.

2. Unplugging, replugging Thunderbolt display into port. This can take 6+ attempts before it detects properly.

3. Open lid on laptop, then laptop display becomes primary, and Thunderbolt Display an extended desktop. Then close the lid. I just did this for the first time yesterday, so I'm not sure about the repeatability for a workaround.

4. Reboot.

Given the length of time this problem has gone unfixed, I'm wondering whether or not Apple has long-term plans to support Thunderbolt. Cheaper, mainstream, non-Apple DVI displays aren't plagued with this problem. For the $1k premium I paid for this display, I expect more from this product. Where's the heck is the firmware fix?