MacBook Pro 15" Retina mid 2014 random shutdowns [duplicate]
Solution 1:
https://outluch.wixsite.com/rmbp-crash
- Disable SIP (
csrutil disablefrom Recovery) -
Move AppleThunderboltNHI.kext
sudo mv /System/Library/Extensions/AppleThunderboltNHI.kext \ /System/Library/Extensions/AppleThunderboltNHI.kext.BAK - Reenable SIP (
csrutil enablefrom Recovery)
Solution 2:
Ok. Finally. I found somewhat like working solution.
RealMacMods NoCrashMBP It looks like a scam. Truly is. It is website with no links to, no citing in google. It is really looks like they want my 2.5$ and that's all. I decided to take that risk ($2.5 lol) Because only good solution I saw was to replace logic board, as many solutions in internet say. It is 500$. It worked. I have to say it to everybody with the same problem. Authors explanation is:
Anyway, this issue is triggered when the CPU goes into an extremely low frequency/clock rate on one of the cores(that just can't handle it), when this happens the system somewhat silently crashes(that is to say, it writes no logs of the event, and no kernel panic takes place). This app/utility keeps it from ever going into that stupidly low frequency. This actually happens natively on Linux and Boot Camp installations, but for some reason OS X tries to drop into that frequency every so often and the system is not at all stable there. Absolutely no chance of damage, worst case you may see like 1% worse battery life, as i believe OS X is using that low frequency to squeeze a little extra battery life out of the older MacBooks.
YouTube video of installation
Solution 3:
Ok. I spent one more night to dig that. Here we go: https://www.rossmanngroup.com/boards/forum/board-repair-troubleshooting/28288-820-3668-sudden-power-off In short: this bug is known and not solved.
Some more digging gave me knowledge that it is CPU related issue. Not GPU. One man tested with GPU loading firstly, but later found, that it is all about CPU. It is loaded - we are fine. It is in idle - we shut down.
I tried to run yes > /dev/null & one time, but it loads my cpu a lot and fans go full throttle. Not fun. I will better look at fullscreen youtube video of beach while working. :D
And tomorrow I will visit nearest apple service to talk a bit. I dont think I will approve logic board replacement for 808 or how much $$$ + month (?). I found these logic boards on ebay and aliexpress. And they cost not more than 600$. (A lot too....)