Well here is the latest. Had the GPU Issue, tried that tried and true methods to keep it going, finally died after a month, even killed the hard drive with repeated restarts. Paid $330 to Apple for the "depot repair." Received it back September 1. As of September 15, starting around September 12th intermittently, I am having continued restarts and kernel panics.
Error message:
Mon Sep 15 20:21:09 2014
panic(cpu 0 caller 0xffffff7fa859feaa): "AGC GPU REGISTER RESTORE FAILED : rdar://7254528, VendorID invalid"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.6.22/src/Appl eMuxControl/kext/AGCPowerManagement.cpp:1114
Backtrace (CPU 0), Frame : Return Address
0xffffff8225123de0 : 0xffffff8026822f79
0xffffff8225123e60 : 0xffffff7fa859feaa
0xffffff8225123ea0 : 0xffffff7fa85a2650
0xffffff8225123ec0 : 0xffffff8026cb336b
0xffffff8225123f20 : 0xffffff802684a20a
0xffffff8225123fb0 : 0xffffff80268d7417
When I agreed to the repair, I spoke at length with the store manager about my concerns that this repair was not holding and owners of these machines were going through multiple logic boards. She said that they would put this in my case file. Well count me among the owners were this issue comes back in less than two weeks after a depot repair and is worsening once again. Off to the Apple Store I shall soon go.. Fourth time in a month!
This isn't even funny now. I was asking for a trade in discount rather than having to go through this again and was offer a $100 education discount on a $2,000 machine- not even covering the sales tax.
The aggravation and travel time just to bring this thing back and forth is mounting...