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

Well I spoke too soon. I'm still having wake up problems with my two TBD. One wakes up, the other doesn't. I have to unplug the 2nd TBD from the first and plug it back in to work. The latest apple support person had me uncheck the "automatic brightness" setting on both displays. He also asked me to make sure that both display's brightness was not near full bright. Mine are set at about 2/3rds brightness. We will see if this fixes the issue. If no,t the tech said the next step was to reinstall OSX Mavericks. I asked if the apple engineers were working on this issue. The reply was this is a known problem and he assumes the engineers are working on the problem. Let's hope.

So after my Apple tech told me to re-install Mavericks, my two TBD are waking up when I click with my bluetooth magic mouse. It has been two days so far. Too short to presume the problem is fixed. To date I've done the hibernate mode change to zero, I've turned off automatic brightness control on both monitors. I've made sure that my brightness level is less than maximum. And I've re-installed Mavericks. Hopefully this last change will last longer than the previous change that lasted only two days.

My TBD is still not always waking. So the steps Apple support has asked me to do haven't worked either. The display waking up is hit and miss. Sometimes it wakes up and others not. But at least I don't have to reboot to get the second display to wake up. I just need to pull the TBD cable and plug it back in. This is a real concern. Is this a TBD problem or a computer problem or software or hardware? I mean these displays are a thousand bucks. And any USB hard drive you plug into them gets "ejected" every time the TBD doesn't wake up. I don't know what happens with a device or devices that would be plugged into the TBD port on the TBD if those devices would be ejected as well. I don't want to find out the hard way. What's next? Apple support hasn't asked me to do anything with my TBD's.

I too am having this issue, though I notice it happens most frequently when the MacBook Pro goes to sleep and I am running a machine in VMWare Fusion. Do any of you experience this as well?

I have TBD with my 2012 Mini and no issues with sleeping or waking up.

I have this problem too.

I too have had sleep/wake issues with my Thunderbolt and MBP. Come on Apple, this is a real problem that needs to be fixed.

Has this solution still worked for you? My display won't wake now. I do have AppleCare.

I just bought a Thunderbolt cable and used it connect my display and it worked right away. So I believe the built in combo power/TB cable is the defect. Time will tell.

I just bought a stand alone Thunderbolt cable and used it connect my display to my MacBook Pro and it worked right away. So I believe the built in combo power/TB cable is the defect. Time will tell.

I have a spare Thunderbolt cable and connected it between my TBD and my Mac mini, unfortunately, in my case, it made no difference with this issue.

Thanks for the heads up, I also did the update once it was released on Thursday and so far so good.

I hope this helps everyone else.

Be very careful with this firmware update - many people (myself included) have had it brick our displays.

How did it break your display? I have been gaming recently and it seems the brightness is too high, but I think that began before the update and I just need to adjust my settings...

Sorry to read that, but I can say it has worked with my TBD to date. Maybe the latest Yosemite update will be a solution as well.