iMac 27 2017 - problem gpu?

[numericum]

Hi guys! I have a new iMac 27 now for six moths and I already have problems....
this happens sometimes when the iMac is in the sleep mode....
did someone have the same issues? what is this?gpu?

Imac 27 2017
i7 4.2
8gb ram
2T fusion
Radeon Pro 580 with 8GB video memory

 

[numericum]

no one knows what is this?

 

[Mac32]

I might be mistaken, but could be bad RAM. Did you change/add RAM recently? Could be GPU also. These kinds of errors are usually bad news. I would bring your iMac your local Apple store.

 

[numericum]

Hei Mac32. Thank you. No, everything is original (is just 6 moths old).
For now I don't need to upgrade the RAM so is ok 8Gb.
Is not my first Mac computer but everytime is something that is not working well (mother board, gpu, hddrive) and now again gpu (8GB Radeon Pro)
I am disappointed.

 

[Mac32]

It seems you've been very unlucky. The hardware usually works fine, it's the software that's the issue these days. You seem to have gotten a lemon.

Could there be some kind of overheating issue going on here? Use temperature monitoring software. Could be that the CPU or GPU isn't properly installed. I've heard about this before. This could cause various issues over time.
FWIW, Apple has always been great with customer service in my experience. Good luck with the repairs.

Maybe others here can be more helpful.

 

[joema2]

Hi guys! I have a new iMac 27 now for six moths and I already have problems....
this happens sometimes when the iMac is in the sleep mode....
did someone have the same issues? what is this?gpu?

That definitely looks like hardware, could be the GPU, VRAM or TCON (Timing Controller). You can run Apple Diagnostics, but it's not a rigorous test and even if no problems are found does not indicate a clean bill of health. However if it finds problems, this confirms a hardware issue: https://support.apple.com/en-us/HT202731

The Apple store has much more extensive hardware diagnostics, including overnight bench testing. You will need to make an appointment for that in either case -- if Apple Diagnostics finds a problem, it's hardware. If it doesn't find a problem it needs more robust diagnostics than you have access to.

 

[numericum]

Thank you guys.
I will call next week to apple shop. I think is hardware (from my past experience).
Hope they change the machine fastest as possible.