I have a macbook pro 2011, which has had graphic distortions, crashes and sudden log-outs for a couple of years. After I discovered the MBP2011 GPU issue in the summer of 2014, I have had several calls to Apple's support, where they each time concluded that it definitely sounded like the GPU issue. They also a couple of times admitted that they had a lot of trouble with this issue, seeing many of these. But they could only at this time suggest for me to bring my mac to be repaired at my own cost. They even said it was important that I did so, so they could investigate the issue, but still insisting that I had to pay, which I refused.
Fast forward to the summer 2015, where the repair programme had been initiated, I finally brought my mac to be repaired, and they quickly concluded that it was covered.
When I got it back, they said that they had replaced the logic board. However, almost immediately I got the same glitches and symptoms as before, and contacted Apple again, who asked me to send it back for repair. When I received my mac the second time, I was told that they had made several tests, and concluded that there were no issues with the machine. Immediately after, on the same day, my computer crashed once more, again with the same symptoms as before, and I sent it back to be repaired. When I received my mac the third time, I was told that they had isolated the problem to some software problems, and that they had reinstalled the whole system. To be fair, I must also tell that they did not charge me anything.
All this happened in June. Shortly after I began experiencing once again the same type of glitches, graphic distortion, Images that are broken, and sudden log-out. This seems to get progressively worse. I called Apple and were insisting that the problem had to be solved for good, as this is my work computer, and as it has already cost me a huge amount of time, working with an unstable computer. Furthermore I found it strange that the same errors should appear with a new logic board, and so quickly. I have not got any explanation of this. But it appears that the repairs are not solving the problems. Apple states that the logic board has only been replaced one time, and therefore the other repairs do not count in order to qualify for a replacement.
I have noticed another thing, though. Since I got my computer back after the last repair. It appears that the color depth is smaller than before. Especially it is visible when playing videos, or when I look at my wake-from-sleep-login screen. The images (which should be smooth) are layered in the color gradients. I cannot remember this being so before, and wonder if it has to do with either the graphic problem, or maybe some settings that have been changed. I am curious if anyone else have seen a similar thing?