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

After trying everything on this board and everything Apple support told me to do, the only permanent solution I found was to prevent my laptop from ever falling asleep. (and why should it!)

System Preferences -> Energy Saver (2nd row) -> slide slider to "Never" on "Computer sleep."

Ironically, you don't need to set the "Display Sleep" to "Never" You can still allow the "Display" to sleep after whatever amount of minutes and it will wake up with no problems, As long as the computer itself doesn't sleep.

Good luck..

I had the sleep problem with my MacBook Pro and the Thunderbolt Display as well.

The Solution ⚠ I found... I bought another Thunderbolt cable and plugged that into the screen, and the computer (instead of the original screen cable). That worked. Computer goes to and wakes from sleep, no reset to Laptop screen only and disconnect.

Funny thing though was - Now also if I use the original cable (the screencable) it works. As long as the other thunderbolt is plugged into the screen, even with out going anywhere else.

Very bizarre. Certainly a faulty Screen / screen logic board / thunderbolt driver... but it works.

Stefan.

Having this problem as well. sometimes I can get it to start up again by unplugging it, restarting my computer and disconnecting and reconnecting it in various orders, but nothing seems to consistantly get it to kick back in. Tried turning off the auto brightness and it seemed to work for about a day and then back to this nonsense. This Monitor is definitly not worth the stress its been causing.

Does a representative from apple ever reply to issues here? 3 years and no posted solution from apple or update to fix the issue? it would be nice if they would at least acknowledge that their product has an issue and maybe do something to resolve it. I'm losing faith in apple as a company and this is really not helping matters.

It's ridiculous that Apple still has no fix for this. Bought the TBD 2 years ago, and have been having this problem for about a year now. Tried upgrading to the lastes OSX, using a dedicated well grounded power outlet, but it all doesn't help. It even happens when I connect it to a Windows PC with Thunderbolt, so it's definitely a bug in the display. Ironic how the problem never popped up until the guarantee had expired...

Apple, do something, fix it! Help us loyal customers while we're still loyal!

It turned out my issue was being caused because of a faulty thunderbolt cable. If I bent the cable at different directions it eventually got the signal and started up. Unfortunately, apple decided to make this cable built in so it's not as simple as ordering a replacement. Luckily my display was still under warrantee so they fixed it for free ( although lugging that thing too and from the store was a pain ) but it would have cost over $100 otherwise.

I posted on this thread earlier with the same conclusion. Replacement of the TBD cable at the Apple Store solved the problem permanently. Luckily, my TBD was under warranty and the replacement was free.

Stephen, I had the same issue about a year ago. I took my screen into the Apple store and they swapped out the TBD cable also. It fixed the issue, however, when I upgraded to mavericks, I am having trouble getting the display to wake.

Same issue.

I took the display to Apple and they replaced the Thunderbolt Display's logic board. Here I am two days after I picked it up and the issue is already back. I've got another appointment at the Apple Store this weekend. I'll suggest the TBD cable this time. Hopefully they can fix it for good.

I thought I'd solved the problem with my TD not waking up on my new MacBook Air. Then Apple recommended I update Mavericks, promising it "Improves the reliability of wake from sleep".

Guess what, the problem is back. Grrrr Apple why won't you fix this!

Hi,

I have the same problem, my thunderbolt Display 27" connected ta a mac mini shuts off by itself.

I have moved the display on various mac but the problem remains, I brought the monitor to the apple store, they were kept under observation for two days the monitor and they said that the monitor is ok, but the problem remains. They now want that I bring the monitor to them with the mac mini so they test it on my mac mini. They had told me that the problem would be solved with the update to 10.9.4 macosx but it did not happen.

😟

I have had this issue since ML on both a Mac Mini and now a nMP and it continues with Yosemite. I just won't use sleep mode until Apple fixes it. I have tried everything I have found in this thread as well as others all to no avail.

Okay - so I have no idea if this is helpful or not but having been through this and several other threads, trying many if not all of the various suggested fixes and work arounds, I finally tried turning off the auto adjust brightness setting...and now a week later, I've not had a single issue.

I am running Mavericks 10.9.4 on a MacBook Air with an external (non-Apple) thunderbolt display (via a Thunderbolt to HDMI adaptor), with the lid of the MacBook Air closed.

To change the setting, I opened the lid of the Air, with the ext. display still attached then: System Preferences > Displays > (display settings for the MacBook Air built-in display) > Uncheck "Automatically adjust brightness".

Hope this helps someone.

... same here: I use a MB Air with Bluetooth Keyboard & Trackpad on a 27" Thunderbolt display. Was never an issue, one click on the keyboard or tap on the Trackpad, and the MBA would wake up together with the display. Since several weeks this only works when I didn't use the computer for a few minutes. After ca. 15min sleeping, the display will not wake up, have to unplug it from the MBA and re-plug it otherwise it stays dark.

Just bought the 27" Thunderbolt Display this past weekend from Best Buy. I notice that if I put the computer to sleep, and then try to wake it again in the morning after a long night, the TD does not awaken.

Should I bother with this? I really need an extra screen, but I'm worried of more sinister problems down the road. Has Apple addressed this? Looks like it's been going on for years.

What's the point of Apple products being so expensive if they are also prone to hardware issues??

The stupidity and arrogance of Apple in this matter beggars belief. I'm a consultant and I talked many of my clients into buying a TBD and MBP. Now I look like a fool.

Sleep wake issues are rampant among my customers. I just returned from resetting the pram on a machine it must be the hundredth time I've done it on a customer computer.

I cannot understand how they can let such a fundamental issue dangling in the wind.

that's not even to mention the fact that there is no 24 inch thunderbolt. 27 is too big for many people but they would like an extra screen for their MBP.

what do we have to do to get a real fix? Have Morning Joe discuss the issue?