Macbook Pro 16 inch panic (PowerPlay Failed Resume)

I disabled power nap and it seemed to help briefly, but the problem resurfaced. I just disabled graphic switching; we will see if that makes a difference.

I bought my machine April (2020). Seemed to work fine at first, but started crashing more and more after a few weeks. I can't recall if there was any OS update at the time. Went to Apple Genius last month (June) and was told it was a known problem and to wait for software update. He even gave me the idea it was well noted online so I could've found out myself, which is true in the sense that it was noted by end-users, consumers. Though I found no announcements from Apple itself. Then I couldn't stand it anymore so I called Apple support again (July) and they made an appointment for me to bring my machine in for repair, telling me there were no known problems. Why Apple won't acknowledge the problem is certainly scandalous. Let's find out!

FYI, things got so bad that my machine will now only boot in safe mode. I contacted Apple Support and am sending it back to them for repair--the local stores are closed and the local independent authorized repair facility said that's all they would do anyway.

Coincidentally, I originally bought another 16" and decided I wanted to upgrade the drive and processor. Apple had me order the new machine and I was then going to send the original machine back for a refund. Fortunately, I hadn't done that when the problems started on the new one and when they told me to send it in for repair Apple extended my return date. Interesting to note this machine does NOT have the problem....

My machine came back from Apple and has been working just fine since the repair.

Hi Brenden,

I followed your instructions, and eventually erased my disk and reinstalled Mac OS using macOS Recovery. And I'm still getting these kernel panics on wake from sleep.

panic(cpu 6 caller 0xffffff7f91868983): GPU Panic: mux-regs 5 3 7f 1f 0 0 severity 3 WS-ready 0 switch-state 0 IG FBs 0 EG FBs 1:0 power-state 0 3D busy HDA idle system-state 2 power-level 5:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.

I contacted Apple Support, and they told me to bring it in for repair, which is a huge pain now since the stores are closed. Was hoping for a solution I could try at home.

(2019 16-inch MacBook Pro, base model)

Thanks,

YK

I am having the same exact problem. Happens ALL THE TIME. Any time I step away from the computer when I come back it has faulted and has to be re-started. Stack Trace here FYI.

panic(cpu 0 caller 0xffffff7f928bd983): GPU Panic: mux-regs 5 3 7f 1f 0 0 severity 3 WS-ready 0 switch-state 0 IG FBs 0 EG FBs 1:0 power-state 0 3D idle HDA idle system-state 2 power-level 5:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.

Backtrace (CPU 0), Frame : Return Address

0xffffff83cbd7b700 : 0xffffff800e91f5cd 

0xffffff83cbd7b750 : 0xffffff800ea58b05 

0xffffff83cbd7b790 : 0xffffff800ea4a68e 

0xffffff83cbd7b7e0 : 0xffffff800e8c5a40 

0xffffff83cbd7b800 : 0xffffff800e91ec97 

0xffffff83cbd7b900 : 0xffffff800e91f087 

0xffffff83cbd7b950 : 0xffffff800f0c27cc 

0xffffff83cbd7b9c0 : 0xffffff7f928bd983 

0xffffff83cbd7ba20 : 0xffffff7f92c7137b 

0xffffff83cbd7bca0 : 0xffffff7f92c3d4d4 

0xffffff83cbd7bcd0 : 0xffffff7f92c70cf8 

0xffffff83cbd7bd00 : 0xffffff7f92c58b3f 

0xffffff83cbd7bd20 : 0xffffff7f92c58acf 

0xffffff83cbd7bd40 : 0xffffff7f92c58921 

0xffffff83cbd7bd70 : 0xffffff7f925a3faa 

0xffffff83cbd7be10 : 0xffffff7f925a3d08 

0xffffff83cbd7be40 : 0xffffff7f925aaaeb 

0xffffff83cbd7bee0 : 0xffffff800f02e60d 

0xffffff83cbd7bf30 : 0xffffff800f02cede 

0xffffff83cbd7bf70 : 0xffffff800f02c4d6 

0xffffff83cbd7bfa0 : 0xffffff800e8c513e 

      Kernel Extensions in backtrace:

         com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f92599000->0xffffff7f925e9fff

            dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f8f312000

         com.apple.driver.AppleMuxControl2(5.2.4)[39BDDE23-D669-3AF6-ADA4-202A2A1F28A3]@0xffffff7f928ae000->0xffffff7f928c2fff

            dependency: com.apple.driver.AppleGraphicsControl(5.2.4)[9BD821A9-6DDD-37FF-A5E1-EFB8A77A0AD3]@0xffffff7f928ab000

            dependency: com.apple.iokit.IOACPIFamily(1.4)[0A7D7382-66FE-391B-9F93-97A996256C25]@0xffffff7f8f309000

            dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f8f312000

            dependency: com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f92599000

            dependency: com.apple.AppleGraphicsDeviceControl(5.2.4)[CD6E2942-2A23-3CE8-9BCA-D5A772667EB8]@0xffffff7f925ea000

         com.apple.kext.AMDRadeonX6000Framebuffer(3.0.9)[E9880F7F-25D3-340E-9F59-0FB58854EF20]@0xffffff7f92c30000->0xffffff7f93061fff

            dependency: com.apple.iokit.IOACPIFamily(1.4)[0A7D7382-66FE-391B-9F93-97A996256C25]@0xffffff7f8f309000

            dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f8f312000

            dependency: com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f92599000

            dependency: com.apple.AppleGraphicsDeviceControl(5.2.4)[CD6E2942-2A23-3CE8-9BCA-D5A772667EB8]@0xffffff7f925ea000

BSD process name corresponding to current thread: kernel_task

Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:

19F101

Kernel version:

Darwin Kernel Version 19.5.0: Tue May 26 20:41:44 PDT 2020; root:xnu-6153.121.2~2/RELEASE_X86_64

Kernel UUID: 54F1A78D-6F41-32BD-BFED-4381F9F6E2EF

Kernel slide:     0x000000000e600000

Kernel text base: 0xffffff800e800000

__HIB  text base: 0xffffff800e700000

System model name: MacBookPro16,1 (Mac-E1008331FDC96864)

System shutdown begun: NO

System uptime in nanoseconds: 13323523138306

last loaded kext at 13199478026142: >!UAudio 323.1 (addr 0xffffff7f95cbe000, size 434176)

last unloaded kext at 257461463935: >usb.!UHostPacketFilter 1.0 (addr 0xffffff7f911e5000, size 24576)

loaded kexts:

Sincerely appreciate your attempts to suggest fixes and agree with your points. If they work for some that’s great. They do not work for many unfortunately (there are many similar threads on this and other forums). It should be the case that Apple respond in that way in terms of customer care for the users. It isn’t the case in this case however.

Regarding your point that the workarounds suggested should solve the GPU panics... , the point is that for a significant number of customers those “fixes” don’t work and Apple are now not offering a hardware resolution but are instead alluding to a potential software based fix coming at an undefined point in future. They do not file a bug report, and I have been on with second level senior support twice, both ended with no resolution regardless of how hard I pushed the case.

Couple that with the fact it appears the issue is Deeper and broader than that, and we have some unhappy customers, including me. This forum is another place to gather insight to the broader deeper issue.

its the worst thing can happen to apple.

many will stop buying mac books. . i purchased 10 days ago 2400$. 16 inch macbook pro

and facing this weird auto restart after putting my mac to sleep mode terrible!!!!!!

i dont know already what to do i re-installed system again and nothing helped

when these apple guys, will wake up and come with solution to fix it urgent ????,

its a big scandal !!!!

i have used always apple mac books.

i am speechless how big apple cannot find fast solution ?

For the record, I did follow those instructions, and it didn’t work for me.

Disabling graphics switching didn't help either and now this is happening virtually every time the machine goes to sleep. This is really a problem.

Thanks for the detailed report. Did you get it back? Did it get fixed?

Thank you all! I have an appointment this Sunday so fingers crossed!!

I am also having THE EXACT SAME PROBLEM with my Macbook 16" and has been like this for the past few months. Glad to know I'm not alone, will call Apple today

Interesting, that’s exactly when I bought mine. Although, seems like there are others that have had the issue for longer.

In fact, when I bought I did research online for any problems with the MacBook Pro 16 (which by then had been out for a few months) and unfortunately did not find these few threads.

Very odd that there is such an inconsistent and poor position from Apple on this.

Very interesting point of reference that you have two 16’s (with slightly different specs), one with the issue and the other without.

I doubt that it’s a spec related issue as I’ve seen many messages from folk with base spec machines also having issues.

I have also found that if it panics on wake it then enters a failed boot cycle until you boot into safe mode. After that it’s then a 50/50 chance for me whether it will then successfully boot into normal mode.

For reference, mine is the 2.4 ghz “HK” processor variant, 5500M 8GB GPU model. I doubt that memory and storage could be the issue but for the record it is 64GB and 4TB.