Question:

Question: Hi Everyone i am getting the error below and my computer wont login. i have the new 2019 16in its less than 3 . weeks . old.

panic(cpu 2 caller 0xffffff7f8c0a1a97): GPU Panic: mux-regs 5 3 7f 1f 0 0 severity 3 WS-ready 0 switch-state 13 IG FBs 0 EG FBs 0:1f power-state 0 3D idle HDA idle system-state 0 power-level 20:20 power-retry 0:0 connect-change 0 : PowerPlay Failed to Initialize.



Backtrace (CPU 2), Frame : Return Address

0xffffffa3ec2d3500 : 0xffffff800813bb1b 

0xffffffa3ec2d3550 : 0xffffff80082733e5 

0xffffffa3ec2d3590 : 0xffffff8008264e5e 

0xffffffa3ec2d35e0 : 0xffffff80080e2a40 

0xffffffa3ec2d3600 : 0xffffff800813b207 

0xffffffa3ec2d3700 : 0xffffff800813b5eb 

0xffffffa3ec2d3750 : 0xffffff80088d24f9 

0xffffffa3ec2d37c0 : 0xffffff7f8c0a1a97 

0xffffffa3ec2d3820 : 0xffffff7f8c45a14d 

0xffffffa3ec2d3aa0 : 0xffffff7f8c428128 

0xffffffa3ec2d3ae0 : 0xffffff7f8c45924a 

0xffffffa3ec2d3b30 : 0xffffff7f8c42c33a 

0xffffffa3ec2d3b90 : 0xffffff7f8bd9f44c 

0xffffffa3ec2d3c10 : 0xffffff7f8bd95c0e 

0xffffffa3ec2d3ca0 : 0xffffff800881460b 

0xffffffa3ec2d3d00 : 0xffffff800886f0c9 

0xffffffa3ec2d3d60 : 0xffffff80082226ef 

0xffffffa3ec2d3db0 : 0xffffff8008141998 

0xffffffa3ec2d3e10 : 0xffffff8008118625 

0xffffffa3ec2d3e70 : 0xffffff800812f0d5 

0xffffffa3ec2d3f00 : 0xffffff800824b485 

0xffffffa3ec2d3fa0 : 0xffffff80080e3226 


MacBook Pro with Touch Bar

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Dec 30, 2019 12:30 AM in response to damion112 In response to damion112

I am having the same error.


I got my 16" MacBook Pro a week ago and it worked fine for one day when it was connected to a charger. But if I close the lid and open it up in a couple of hours (I assume after the MacBook has gone from sleep to hibernation) it always does a cold boot. After I insert the password, I get a black screen and all the fans got 100% for one second. Then it boots again, I insert the password and I get logged in. I always get a crash report from the OS.


Back when I had 10.5.1 it was a kernel panic and said something about the CPU related setPowerState() function failing. I saved all these reports into files, but then one day the MacBook went into an endless boot loop and I had to reinstall the OS. That's when I lost 8 of these reports that I had stored on the disk.


Now with 10.5.2 I've only been getting GPU panic reports. Most of them have said "PowerPlay Failed Resume" and I was surprised that I found zero Google results with that exact text. Today I got my first "PowerPlay Failed to Initialize" and was able to find this forum thread with it.


I will be sending this unit back to Apple as I believe it to be a hardware issue. I've had problems with 10.5.1 and 10.5.2. I did a clean install of 10.5.2 and got the crash report even right after finishing the setup. I believe it's either in the CPU, GPU or the logic board.


I'll write here when I hear what they did to the MacBook in repairs.


P.S. During writing this post the MacBook did a sudden cold reboot while it was just on idle on the desk next to me. When I got to the desktop I got another "PowerPlay Failed Resume" but the system was also very unresponsive. I was unable to copy the full report to TextEdit or even press the "Send" button on the report. Mouse stopped moving. A minute later a black screen, 1 second of 100% fan noise and another cold reboot.

Dec 30, 2019 12:30 AM

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Dec 30, 2019 3:54 PM in response to ZupaDupa In response to ZupaDupa


... if I close the lid and open it up in a couple of hours (I assume after the MacBook has gone from sleep to hibernation) it always does a cold boot. After I insert the password, I get a black screen and all the fans got 100% for one second. Then it boots again, I insert the password and I get logged in. I always get a crash report from the OS.

Same exact problem here, and I also get crashes while running gpu-intensive apps (Unity 3D). I took it to the Apple store, they ran all diagnostics and everything came back fine, they recommended wiping and reinstalling, I said no thanks and returned it. Am waiting a few weeks before I decide whether to replace or not.


There's another thread over about this or similar crashes on the new 16" Macbook Pro: https://discussions.apple.com/thread/250905859



Dec 30, 2019 3:54 PM

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Jan 2, 2020 7:00 PM in response to damion112 In response to damion112

Same issue here, saying there's a GPU kernel panic.

Just got my MacBook Pro 16 less than a week ago and it came out of nowhere.

Whenever I put my laptop to sleep or close the lid, it crashes and will keep crashing until I do a hard shut down.

Jan 2, 2020 7:00 PM

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Jan 3, 2020 1:04 AM in response to seanngpack In response to seanngpack

I am having the same issue, the laptop is 10 days old. It seems there is an issue with some motherboards of the 16in laptops.

A colleague is having the same problem. He is already awaiting for 3 weeks; no answer from Apple, when to expect the new motherboard.

Jan 3, 2020 1:04 AM

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Jan 3, 2020 5:21 AM in response to Rapid123 In response to Rapid123

Had a call with Apple customer service and they concluded it must be a hardware problem, so I sent it in for repairs yesterday. No estimates as to when it might come back.


Luckily I just replaced the battery on my 2013 MacBook Pro that had a swollen battery. This thing is rock solid. Seems like during the 6 years it hasn't gotten any slower. This unit will probably keep on going when the 16" comes to it's end of life.

Jan 3, 2020 5:21 AM

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Jan 3, 2020 9:04 AM in response to damion112 In response to damion112

I am having the same issue. When I reboot the progress bar gets to about 70% and then the fans whir for about 1 second then the machine restarts and it just keeps doing it. When I restart in safe mode I get this error report.





panic(cpu 2 caller 0xffffff7fa338ca97): GPU Panic: mux-regs 5 3 7f 1f 0 0 severity 3 WS-ready 0 switch-state 13 IG FBs 0 EG FBs 0:1f power-state 0 3D idle HDA idle system-state 0 power-level 20:20 power-retry 0:0 connect-change 0 : PowerPlay Failed to Initialize.



Backtrace (CPU 2), Frame : Return Address

0xffffff821d573500 : 0xffffff801f33bb1b 

0xffffff821d573550 : 0xffffff801f4733e5 

0xffffff821d573590 : 0xffffff801f464e5e 

0xffffff821d5735e0 : 0xffffff801f2e2a40 

0xffffff821d573600 : 0xffffff801f33b207 

0xffffff821d573700 : 0xffffff801f33b5eb 

0xffffff821d573750 : 0xffffff801fad24f9 

0xffffff821d5737c0 : 0xffffff7fa338ca97 

0xffffff821d573820 : 0xffffff7fa36a214d 

0xffffff821d573aa0 : 0xffffff7fa3670128 

0xffffff821d573ae0 : 0xffffff7fa36a124a 

0xffffff821d573b30 : 0xffffff7fa367433a 

0xffffff821d573b90 : 0xffffff7fa2f9d44c 

0xffffff821d573c10 : 0xffffff7fa2f93c0e 

0xffffff821d573ca0 : 0xffffff801fa1460b 

0xffffff821d573d00 : 0xffffff801fa6f0c9 

0xffffff821d573d60 : 0xffffff801f4226ef 

0xffffff821d573db0 : 0xffffff801f341998 

0xffffff821d573e10 : 0xffffff801f318625 

0xffffff821d573e70 : 0xffffff801f32f0d5 

0xffffff821d573f00 : 0xffffff801f44b485 

0xffffff821d573fa0 : 0xffffff801f2e3226 


Jan 3, 2020 9:04 AM

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Jan 11, 2020 12:48 PM in response to damion112 In response to damion112

I‘ve the same Problem. MBP stop to work, on reboot at ca. 70% it stop - fans blow up - reboot.

I tried SMC Reset, NVRAM Reset, repair the FS with desaster recovery. Reinstall macOS - without any effect.

The MBP boots without problems in single user/safe mode - crashreport is nearly the same as above.

I‘m now going to reinstall and transfer my files back to my previous MBP 15“ mid-2019.

Has someone an solution for this problem, or is it really a hardware problem and can only be fixed by swap logicboard?

Jan 11, 2020 12:48 PM

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Jan 11, 2020 1:09 PM in response to Frank Roscher In response to Frank Roscher

I spent 3+ hours on the phone with Apple Support. They logged into my machine. I had already rebooted and wiped my drive. They looked around for a while but in the end concluded it was hardware. I returned since I was within my return window and got a new one. I've read that it is either the T2 chip or the GPU. I had the higher end base model with the 5500M 4GB but I'm not sure that matters. So far my new one (slightly upgraded) is ok but every time I boot I cross my fingers.

Jan 11, 2020 1:09 PM

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Jan 13, 2020 12:10 AM in response to williamfrommountain lakes In response to williamfrommountain lakes

Same problem here. Started happening 1 time per day and now its multiple times. Seems to happen only when awaking form sleep.


Let us know if the new one fixed it. Im hoping this is not hardware related and I will have to go through the headache of replacing this.

Jan 13, 2020 12:10 AM

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Jan 17, 2020 12:59 AM in response to veeramar In response to veeramar

I have no news about my MacBook, it is still in repairs. Just wanted to share it's specs to see if we can find similarites. I've noticed that the people who do announce their specs in regards to this problem (in this forum post and in others that I've seen) seem to have the 5500M GPU, so I'm wondering if that is the cause of the problem...


Anyway, my specs are:

8-core i9 2.3GHz

32GB 2666 MHz DDR4

1TB SSD

Radeon Pro 5500M 4GB GDDR6

Jan 17, 2020 12:59 AM

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Jan 17, 2020 6:20 AM in response to ZupaDupa In response to ZupaDupa

Apple engineering is currently looking at my issue since they have had all the diagnostics at this point. They are not convinced its hardware is at fault since it does boot in safe mode. My error is slightly different. I get:


panic(cpu 0 caller 0xffffff7f91021a97): GPU Panic: mux-regs 4 3 3f 1f 0 0 severity 3 WS-ready 1 switch-state 0 IG FBs 1 EG FBs 0:0 power-state 4 3D idle HDA idle system-state 2 power-level 5:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.


So far the temporary work around has been in System Preferences > Energy Saver > Power Adapter > Prevent computer from sleeping automatically when the display is off, setting that ON.


The error seems to occur when coming back from sleep (at least for me anyways). Apple is supposed to get back to me to let me know whether to send the machine back or wait for a software fix.


My specs are:


8-core i9 2.4GHz

64GB 2667 MHz DDR4

2TB SSD

Radeon Pro 5500M 8GB

Jan 17, 2020 6:20 AM

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Jan 18, 2020 12:48 AM in response to Frank Roscher In response to Frank Roscher

News from my MBP: It's still in repair and the repair shop confirms a hardware failure. System crash (black screen, fans blow up, reboot immediately) when switch to 5500M GPU, probably this switch doesn't occure in safe-mode. The system crash even in Apple advance diagnostic program (from a netboot image), the built-in diagnostic (press D on boot) doesn't report any error.


Result: A new logic board from apple is on the way and I should get back my MBP next week.


(MBP 16inch, 2.3i9, 64G Ram, 2TB SSD, GPU 5500M 8GB)

Jan 18, 2020 12:48 AM

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User profile for user: damion112

Question: Hi Everyone i am getting the error below and my computer wont login. i have the new 2019 16in its less than 3 . weeks . old.