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

Thank you, everyone for such quick responses!

I have started looking at Samsung displays and will check out Sony today.

So far I like this one http://www.samsung.com/ca/consumer/office/monitors/led/LS27B970DS/ZC

I'm just looking for a new monitor that I can trust the color. I had a Dell 24" a few years ago. Great monitor but I just didn't trust the color, even after calibration. I replaced it with the 23" Apple Cinema Display. Also beautiful but it is also quirky, after a power outage you have to play tic tac toe with power plugs to get it to come to life again, and it doesn't support HDCP. The Apple monitors are just so reliable with color reproduction!

If I could be sure that simply buying a new cable or adjusting the sleep settings would be enough, then I would order the TBD instantly, but even those fixes don't seem to work for everyone. Argh!!

Thank you all for your comments!

I Have two of the monitors and have found that leaving the machine on twenty four hours per day will keep the monitors lit up, and the computer will black them out without going to sleep. However, if I restart the machine, the monitors will not come back on until they are unplugged and allowed to sit in the corner a few days,. Nevertheless, when the monitors are working, still they will not pass the thunderbolt linkages further along to a hard drive which now is useless.

SO I would look for alternative displays and possibly a different technology from thunderbolt if possible.

I Was planning on upgrading to the new retina display, but do not trust the technology enough to risk the expenditures.

IT is not the cables. People think it is, but what really is happening is that the monitors are resetting themselves while they are sitting on the shelf at the repair shop, at least that is my guess.

SONY might have the accurate color you need but I do not have adequate knowledge to suggest an alternative to the Apple mess.

Thanks, Edward.

That's great advice. I have been looking at the Sony displays but they start WAY over $1000 and I just don't have that kind of budget for this monitor.

Thanks again.

I love reading these forums. I really just like reading and waiting for the inevitable "why would you want to do what you asked about in the first place/ You can't/Apple is so wonderful you are crazy for not using the ect."

I have never wanted to punch anyone so badly in my life. Every Single Time I read these boards I'm just waiting for some smarmy little sht to chime in with a totally obnoxious reply that answers nothing or just has to opine their total obsequious loyalty to the corporate iCock.

Money dude. 18 Billion with a capital "B" in one quarter. Made off phones. If they sell a monitor you can bet your *** it'll be a 1000.00 frickin MONITOR. Just a monitor. You did as I did and bought it figuring "Sheet, it's all Apple it'll just work!"

Nope. Where are Apple's priorities? Your Wallet. That's where.

Apple:

You can keep your fucing "points" What am I ten? Level your mom.

Mi TB was going black random since some monthes. I thought it was the Mini, but I "solved" the problem by connecting anotner dysplay with HDMI at the same moment my TB went to black. Result: both dysplays functioned oké. After that I dysconnected the HDMI and TB didn't go to black anymore. Cann't explain but it worked for me.

I've been struggling with problems with my two TBDisplays for a year now. I'm working with one Apple tech now for 3 months. I keep sending them data captures with failures on every different setup they would like me to try next. After two weeks of silence and no replies to my emails, the guy comes back with the error reports are inconclusive. REALLY. That is the opposite, the results are conclusive, the TBDisplays are failing with every possible setup they ask me to do. How is that inconclusive? Who do we have to call to get these displays recalled? Who do I have to call to get my money back? I'm tired of this crap. This is BS pure and simple.

Well my semi local Apple store manager surprised the heck out of me. I brought my two TBDisplays and computer and TB hub in for a couple rounds of genius bar tech time. After going over the last 3 month long case file, they came to a conclusion. They offered to refund me my entire purchase costs, including my Apple Care plan for the two monitors that I had for nearly 16 months............I jumped at the offer. I wished for this answer, but never thought they would do this. My online and telephone Apple tech said he couldn't make that offer, nor would he tell me who could. The bottom line is Apple knows there is a problem with the TBDisplays. My best guess is there are problems with the built in hub in the displays. Whatever was plugged into the hub, whether another TB display or another hub or the USB ports. Those devices always seemed to be dropped for various reasons. Whether sleep mode or start up or who knows what else. I feel rather lucky at this point. I can now move forward instead of doing the constant try this, try that approach. I had over a year of that type of trouble shooting. Never once did an apple tech tell me they were looking for problems here. But the store manager and genius bar tech were well aware of the issues. Of course me bringing in two TBDisplays, computer and stuff in their original boxes on a busy saturday, might have helped. It doesn't help business to make a scene with a store full of customers. Thank you Apple.

More or less same profile, though the Apple Store solution was to finally concede the original TBD just could not be figured out and they gave me a new monitor. It has been a few weeks since the switch and all is working as it should. Then added bonus is the monitor is covered for a year, though having the more than mild suggest to get Applecare on it does fill me with a fair amount of trepidation.

Despite the positive resolution, no one should have to deal with all the back and forth with the Applecare rep. ( I can't imagine what it would have been like without that coverage) and then the numerous trips to the not so local Apple store. As noted by many this has been an ongoing problem for years and a recall notice and replacement program should be in the offing for all.

I have a MBP and this display and have been having the same issue as many in this post. After about 6 months, the display started flickering and I had the cable replaced at my local Apple store. While this fixed the flickering issue, the display would still not wake up after sleep on a consistent basis.

I do think I finally solved this by using a thunderbolt cable from the MBP to the port on the back of the display. In over two weeks now it has worked every time. For $40 a great workaround. Not optimal, because something is still broken, but at least I can wake up the display now. My guess is there is a design flaw in the logic board for the built-in cable.

Hope this helps

I followed your advice and connected the TBD to the MBP using the port at the back of the TBD. I then connected the TBD's "2 in 1" TB cable to a Lacie TB hard drive. Everything seems to be working fine now for the first time in at least a year. Many thanks.

I subsequently also found it necessary to change pmset settings to disable standby and hibernatemode. With these changes and the bypass cable the MBP now wakes properly after a full night's sleep. pmset settings (which may not all be necessary but do work for me as a package) are:

Active Profiles:

Battery Power -1*

AC Power -1

Currently in use:

standbydelay 8640000

standby 0

halfdim 1

hibernatefile /var/vm/sleepimage

darkwakes 0

gpuswitch 2

disksleep 10

sleep 10

autopoweroffdelay 720000

hibernatemode 0

autopoweroff 0

ttyskeepawake 1

displaysleep 10

acwake 0

lidwake 1

The separate TB cable also seems to work for me. Although I can't say if it's a long-term solution since I just plugged it in and it worked. I'm pretty hopeful, though. Seems like this is a manufacturing defect given how widespread this problem is. Hopefully, we'll see Apple making things right by acknowledging the defect and offering out of warranty repairs.

Hi Mirone,

I am using El Capitan and those files are no longer listed in the directory you mentioned. I tried to do a search for them and can't find them. Do you happen to know which files in El Capitan will do the same job? I have a new Thunderbolt display (4 months) and am constantly encountering this problem. I have been opening and closing the MacBook Air to get it to wake the screen.

Thank you!

~natalie

This solved the problem for me:

On the wired keyboard connected to the TB display: press AND HOLD the space bar for SEVERAL seconds.... and... the display wakes up :-D

Hurah!

Many weeks i have had problems with the display suddenly off, not wake up.

But when i bought new thunderbolt cable the display works perfectly. New cable has two plugs one to notebook, another to display.

Recomend you to buy new cable if you have problems.