Dual Monitor/Sleep Issue

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long story short, after upgrading yosemite cannot put computer sleep , wake 2 monitors on , connected. have spent hours on phone, , been apple store twice trying resolve issue. replaced the: 5400 hd, logic board, , ssd in computer trying resolve , when brought home 2nd time last night still having same issues. when put computer sleep , wake computer inoperable. cannot click anything, computer frozen.

work around:
way can make mini , sleep work to: step 1) turn 2nd monitor on, 2) put mini sleep, 3) wake mini up, 4) turn 2nd monitor on.

apple getting call later can report bug directly.
 

i don't think hardware issue.
think second display issue 10.10.

read lot of complains issue, have yet find or solution. , solution very very welcome.

if has right solution.


* use external 3rd party display connected thunderbolt connector. mbp 2011 in clamshell mode. freeze me inconsistent. in time , appearance.
 


Forums Macs macOS OS X Yosemite (10.10)


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