Random short display glitches

I haven’t tried it on this model yet. I did it on the previous one and it only returned a webcam error (the camera was unplugged from the motherboard). Also, may be related in some way.

Both of the models experienced the CPU issue where theres some unstable voltage causing the computer to shut off randomly. On both models this is fixed using the RealMacMods NoCrash utility.

My only other explanation is these two issues somehow being related. The CPU thing is known to be a widespread issue, but I haven’t found anything in regards to the glitches. As I said, happens mainly in the background, meaning full screen apps seem to run just fine (I haven’t noticed the glitching in full screen apps).

Okay thanks. I certainly wouldn't know how to do this myself, and I am not sure if any stores where I live would perform this.

Truth is, the way I found this RealMacMods utility is I sent my previous one for a fix for the random shut downs and they just returned it to me with the utility installed. It was a bit of a shady reseller tho so I might try to report the issue in the store

I have bought this one in maybe they would do something about it. Thanks for the info anyway.

One more question tho, is there any long term damage that the RealMacMods utility would do? Or is it just some glitches here and there? Thanks

The root issue is the MOSFET's Apple used in this series degraded! You'll note the followup models don't use this circuit design. Depending on how hard the system is used will influence the degradation of the chips.

Again, if you are not experiencing the issue I wouldn't use the software fix. The glitch you are seeing is when the CPU is switching states but the fix tells the CPU No! I want you to stay at the higher power stage!

So what is the issues here using this utility? The CPU will run hotter than it needs to, the system runs hotter, the battery won't last as long.

Basically, its lifespan and battery life is shorter

I fixed a friends system years ago and its still running! So replacing the chips with newer rev'd versions does work!

Depending on how much you spent it might be worth it. Given the systems age does it meet your needs? Are you planning on getting a newer system at some point? Then maybe its worth living with the glitch.

@danj Well most importantly, i just bought it few weeks ago and it does have 12 month of warranty so I suppose the store would replace the laptop if they found the issue. Last time with the shady repair with previous model they did find the issue as I instructed them specifically to put the laptop so sleep via the Apple menu > Sleep which was almost guaranteed to cause the shutdown. Tho their "fix" was the using the utility. I found a forum with a open source (i guess, i mean it is just 2 lines of Python code) version of the script which consumes half the CPU and I noticed it reduces the CPU temps by a HUGE amount (from 70-80ish degrees to around 50)

One other big difference actually is, the previous one had this issue EVERY TIME I hit restart. The screen would turn off, fans would go to 100% and then it would shut off. This one so far reboots just fine, but I did have it turn off when it was supposed to be sleeping.

I bet you are a Red Bull drinker or other high caffeinated drink.

Did you ever read the Ingredients listing and understand what the other stuff besides the caffeine is for? Every time we alter things we often have to alter the alteration to fix them! If you can live without the caffeine that is a better solution (and cheaper)!

This can get deep real fast! Thats the issue you face here, patching and patching to fix each issue created by the other, Apple did a good design here. There chip vendor messed them up!

Basically, you need to figure out which is the better long term solution.

@danj Haha no I don't like energy drinks. They taste like chewing gum. I'm more of a tea-person. Anyways, I will keep testing and if it gets worse I will just return it. Thanks for the help. I am currently using the laptop without any script running and I'll see if the flashing keeps occurring. However I am thinking, and excuse a potentially dumb thought here, you said it is because the CPU wants to switch to a lower power mode, but it more occurs when it's going from idle-ish to something more intense. For example, when I am extracting a DMG image, it sometimes can happen at the beginning of the process as the fans start to spin up and CPU usage increases.