Currently Being ModeratedOct 3, 2012 2:16 PM (in response to samprimo)
I just tested my HDMI output on my Panasonic HDTV and it works just fine, so given my testing and teh research I've made, it seems like the problem is limited to Sony, Samsung and LG displays.
Currently Being ModeratedOct 4, 2012 12:16 PM (in response to samprimo)
Same issue: After the latest update, Trine 2 is suddenly very laggy at 2880x1800. For fun, tried resetting PRAM, but it didn't turn out to be as much fun as I thought it might.
Currently Being ModeratedOct 4, 2012 2:30 PM (in response to samprimo)
Are you experiencing these symptoms?
Currently Being ModeratedOct 4, 2012 2:45 PM (in response to LukeD)
I have written to find out if anyone has experienced this issue of their Thunderbolt display not working after upgrading to Mountain Lion on their MacBook Pro, with retina display.
Both screens go black. A large mouse pointer appeas, but that is it.
I have tried applying the combo update to see if it would correct things, to no avail.
Does anyone have any thoughts or advice?
Precisely, except usind HDMI and a 42" Sony HDTV
Currently Being ModeratedOct 4, 2012 6:04 PM (in response to samprimo)
The fix involves deleting 2 preferance files in the Library.
1) Macintosh HD - Library - Preferances
2) Finder - Go - Option - Library - Preferances - By Host
Then, peform a PRAM reset.
Apple has advised that a software update will be out in a few days. Otherwsie, the above works perfectly!
Wooo hooo! Love you, Apple!
If you are not comfortable performing the above, please contact Apple Support, and ask for Level 2 support. They will gladly walk you through the process. Alternatively, just wait for the software update.
Currently Being ModeratedOct 4, 2012 6:22 PM (in response to LukeD)
You're awesome man! You just made my day, it works perfectly, for both issues, the game lag and the external display. Thank you LukeD and thank you Apple!
Anyone who visits this threat, share it with anyone who has experienced the same symptoms.
Currently Being ModeratedOct 4, 2012 6:52 PM (in response to samprimo)
My pleasure! This issue was driving me nuts. I could not take it anymore.
I am glad that both our systems are back!
All the best,
Currently Being ModeratedJul 23, 2013 9:19 AM (in response to LukeD)
Woho! This solved my problem to. I skipped part 2) because I did not have that file. Did this under 10.8.4. The file in step 1) was created on June 28. Strange... No UI lag so far!
You can also use this thread for more ease: https://discussions.apple.com/message/20318295#20318295
Currently Being ModeratedDec 20, 2013 1:46 PM (in response to samprimo)
Thanks a **** load, i got so worry when it happend all of a sudden! keep up the good work you dont know how many people you have helped^^!! i really appreciate it!