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Old Nov 20th, 2013, 07:23 PM   #1
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Thunderbolt Display not recognized

Since upgrading to Mavericks, I have noticed a change in behaviour of my 2011 MacBook Pro 13" when connected to the Thunderbolt Display. Previously, while in clamshell mode, once the laptop went to sleep it could be revived by touching the external trackpad or wired keyboard, and the MacBook would revive and the display would activate. Now touching the trackpad appears to revive the MacBook (the pulsating light becomes solid) but the display does not activate. Unplugging the Thunderbolt cable, and reattaching it brings the screen to life, but this is a bit of a bother.

Is anyone else experiencing this, or found a solution?
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Old Nov 20th, 2013, 07:41 PM   #2
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Have a look at:

http://www.ehmac.ca/mac-iphone-ipad-...n-problem.html

It may be a related problem.
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Old Nov 21st, 2013, 11:49 AM   #3
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Nope, it's a known Mavericks bug! Just google " mavericks + thunderbolt display not waking up from sleep". You"ll get a lot of responses. E.g: https://discussions.apple.com/thread/3356740?tstart=0 A quote:
Quote:
I have through support a work around to this issue that seems to work for me until this gets resolved in a software upgrade. They know that there is an issue with the Thunderbolt display with it waking up when the AUTOMATICALLY ADJUST BRIGHTNESS is checked. I have unchecked this in my display settings and I no longer have the issue. I hope this helps everyone - I was very frustrated by this and hope they fix it soon but Id rather live with adjusting the brightness myself than unplugging all the time. I already has to send one Thunderbolt back because it quit working - That was the original monitor that I had when I started this thread. The new monitor had the same issue as the first where it would not wake up so I called support because I was afraid it would break again if I kept pulling the plug to get it to turn on. I HOPE this works for everyone else.
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Old Nov 21st, 2013, 02:09 PM   #4
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Gheese, it really make me wonder how a new OS can goof things up so much, especially when it worked with an earlier version. Don't they do any testing especially with their own products??
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Old Nov 24th, 2013, 12:32 AM   #5
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Quote:
Originally Posted by NFtoBC View Post
Since upgrading to Mavericks, I have noticed a change in behaviour of my 2011 MacBook Pro 13" when connected to the Thunderbolt Display. Previously, while in clamshell mode, once the laptop went to sleep it could be revived by touching the external trackpad or wired keyboard, and the MacBook would revive and the display would activate. Now touching the trackpad appears to revive the MacBook (the pulsating light becomes solid) but the display does not activate. Unplugging the Thunderbolt cable, and reattaching it brings the screen to life, but this is a bit of a bother.

Is anyone else experiencing this, or found a solution?



Do I assume that your post in another thread fixed your problem?

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Originally Posted by NFtoBC View Post
The SMC reset SEEMS to have addressed this. Thanks!
http://www.ehmac.ca/mac-iphone-ipad-...problem-2.html
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Old Nov 24th, 2013, 12:39 AM   #6
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Originally Posted by pm-r View Post
Do I assume that your post in another thread fixed your problem?



http://www.ehmac.ca/mac-iphone-ipad-...problem-2.html
Yes. Thanks!
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Old Nov 24th, 2013, 01:09 PM   #7
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Good to hear.

It seems the good old resets still seem to work - sometimes, but not always, but often.
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