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Graphical Glitches Plaguing Some 2020 iMac Owners With Radeon Pro 5700 XT GPU
Apple in August refreshed the 2020 iMac lineup with a new 27-inch model that's equipped with 10th-generation Intel processors, more RAM, more SSD...
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I just see this in the DiagnosticReports/ProxiedDevice-Bridge>Retired (followed by gibberish):
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"macOSPanicString" : "BAD MAGIC! (flag set in iBoot panic header), no macOS panic log available",
I have reinstalled a new system twice - second time on a new volume Apple Support had me create.Doesn't shed much light. IIRC, you reinstalled macOS as per support's request, yes? Just asking based on the thread OkiRun shared, but really grasping at straws here.
Last word I got was they agreed to replace the machine and took my Credit Card to put a $10,000 hold on it (since I have been trying to get this resolved since day-one). That was 3 weeks ago tomorrow and they are no longer answering my emails. I waited 2 weeks before emailing them for a status update and asked again a couple days ago - no reply.
So I guess that is the end of any support in my case.
@choreo, the good news here is that when you finally get your replacement system, you should be able to follow this pattern as if originally purchased form Apple, except for perhaps the full refund and move on part since originally purchased from B&H.
Yes, I have to agree the 5700 "reboots" pretty fast.And, this just published:
2019 Mac Pro With W5500X
real world speed test results for performance minded Macintosh usersbarefeats.com
Lou
WTF. 3 weeks and still no machine?? I've ordered a few now (all replacements of the one that preceded it) and takes 7-8 days from the time the order is submitted until delivered to my doorstep (in Seattle, WA area).
That's a really odd requirement and a bit of a mixed bag response. It's good that Apple is exercising some leeway to hook you up with a replacement machine, but they're OK leaving you in a lurch for so long?? I guess they get a "C" -- assuming the replacement machine addresses the issues. Best of luck getting to the finish line ASAP.my exact configuration has to show up in the Apple Store online showing a 7-day or less delivery time
This is exactly as stupid as apple needing my entire Mac Pro back to test the GPU which I'm claiming is faulty/not fit for sale. In what world should my Mac be going back. It's just absurd.That's a really odd requirement and a bit of a mixed bag response. It's good that Apple is exercising some leeway to hook you up with a replacement machine, but they're OK leaving you in a lurch for so long?? I guess they get a "C" -- assuming the replacement machine addresses the issues. Best of luck getting to the finish line ASAP.
needing my entire Mac Pro back to test the GPU
Mine made it about 6 days three weeks ago without a single crash, then it came back with a vengeance (about 5 in one day). It is totally random here.as I typed this, the system crashed. This time on launching After effects. Nothing else open. and it just stalled. No mouse activity, no ability to swap apps just totally unresponsive, Eventually panicking and restarting itself. This is the first in over 2 a week and a half.
This is exactly as stupid as apple needing my entire Mac Pro back to test the GPU which I'm claiming is faulty/not fit for sale. In what world should my Mac be going back. It's just absurd.
Installing now.Have you installed macOS Catalina 10.15.7 update?
Apple are actively investigating the issue I was told. The problem being how quick they can do anything about it. “Actively looking at the problems”Same here. That is why I wanted to purchase a "modular" Mac. Of course, I have never had a single hardware issue with the cheaper modular Macs in the past (still running my 2012 Mac Pro with no problems), so I really was not expecting this. Since I live several hundred miles from the nearest Apple Store, I was thinking that if a component like a GPU or a Power Supply went out, they could just send me a new one. Also, my Brother has owned several iMacs and he lives in Dallas, but every time he had a problem with one and had to have Apple come out to fix them (or had to take one to an Apple Store), they usually made the problem worse (as they really are not designed to take apart). He always ended up buying a new iMac after Apple tried to fix them (usually display issues). I made this massive purchase (massive for me) based only past experience that I have never had a modular Mac hardware problem in 30 years.
I am still not convinced it is a "hardware" issue, but we will see. Of course, buying a Pro Vega is an option, but that does not mean there is a problem with the w5700x hardware necessarily.
Have you installed macOS Catalina 10.15.7 update?