Catalina 10.15.7 iMac (late 2012) shut down issues: resetting SMC and NVRAM does NOT solve the issue

Question

Catalina 10.15.7 iMac (late 2012) shut down issues: resetting SMC and NVRAM does NOT solve the issue

I understand that I am one of many from searches but I have yet to see an answer that works. I upgraded (?) to Catalina 10.15.7 on my late 2012 27" iMac. Obviously I looked at the posts out there. Yes, I reset the SMC and NVRAM. Yes, I removed the external drive that had Time Machine on it. I use Carbon Copy Cloner anyway to backup as it is superior to Time Machine. These drive are off always and only on when I need to back up. Still the computer will not shut off or will shut off and reboot!🤬

I removed all older applications that do not function with OS 10.15.7. I do not understand why this issue cannot be solved by Apple. I just want to turn off my computer without holding down the power button or unplugging the computer.

PLEASE TELL ME SOMEONE HAS SOLVED THIS PROBLEM

Many thanks in advance. Be well and stay safe.

Signed,

Frustrated by this annoying issue 🤬

iMac Line (2012 and Later)

Posted on Oct 17, 2020 11:33 AM

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Answer 1

Top-ranking reply

Sparks0829

Community Specialist

Jan 18, 2021 1:37 PM in response to Calculus_Entropy

Hello again Calculus_Entropy,

Since the issue persists in another user account, the next best step would be to reinstall the macOS as the issue may be with the software itself. This process will not overwrite any data. It only overwrites the system files. That being said, it's still recommended to have a known good backup: Back up your Mac with Time Machine.

When you're ready, here's the instructions to reinstall the macOS: How to reinstall macOS

If after reinstalling macOS, you're still experiencing the same issue, reach out for additional assistance here: Get Support.

Cheers.

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Answer 2

Joseph_S.

Community Specialist

Oct 22, 2020 9:22 AM in response to Calculus_Entropy

Hi there Calculus_Entropy,

From what we can tell, you're unable to power off your iMac by choosing Apple menu () > Shutdown, and you must power it off manually. We're glad you're here, and we can help.

To start, let's boot your iMac into safe mode to see if the issue persists there. "Safe mode prevents your Mac from loading certain software as it starts up, including login items, system extensions not required by macOS, and fonts not installed by macOS. It also does a basic check of your startup disk, similar to using First Aid in Disk Utility. And it deletes some system caches, including font caches and the kernel cache, which are automatically created again as needed. Safe mode is particularly useful when you're trying to resolve an issue that doesn't seem to be associated with using any particular app." Check out the support article below to learn how to boot your iMac in to safe mode, and test for the issue there:

How to use safe mode on your Mac

After testing the issue in safe mode, try restarting your iMac to boot up normally again. Let us know how it goes. Cheers.

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Answer 3

karina184

Community Specialist

Oct 27, 2020 2:10 PM in response to Calculus_Entropy

Hi again Calculus_Entropy,

It sounds like the issue with your Mac not shutting down as expected the first time persists even after booting in safe mode. We appreciate you taking the time to clarify the issue for us, and we'd like to try a few more troubleshooting steps to see if we can get this sorted out. Next, let's see if the issue persists in another user account. To find out how to create a new user account to test for this behavior, follow the steps in this link:

Set up users, guests, and groups on Mac

We hope this helps. Let us know your results. Take care.

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Answer 4

Nov 29, 2020 11:40 AM in response to karina184

SO NO FURTHER HELP?!?!?!

Here is the last "report" sent to Apple in hopes that they can update the OS 10.15.7 to allow an iMac to be shutdown once and not have to shut it down twice. Come on Apple, you are better than this. Any help is appreciated. Seriously, any help. I am not the only one with this issue. Just do a search!

APPPLE REPORT

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Answer 5

Oct 26, 2020 6:55 PM in response to Joseph_S.

Sorry for the delay but the issue still exists. I can shut it down but it will ultimately reboot on its own. If I shut it down a second time, it stays off. I see no reason for this not to be solved by Apple. It is clearly an issue that lots of folks have.

Shame on you Apple tech support.

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Answer 6

Oct 27, 2020 1:04 PM in response to Calculus_Entropy

As mentioned, starting in safe mode did not solve any of the issues with Catalina and shutting down my iMac. I am still unable to power off my iMac by choosing Apple menu () > Shutdown. I get to wait and come back to find it rebooted once again and then I can click the "Shutdown" icon on the menu of users. Very annoying. I know I am not the only one with this issue.

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Answer 7

Nov 29, 2020 11:41 AM in response to Calculus_Entropy

panic(cpu 2 caller 0xffffff7fa3fdfaae): watchdog timeout: no checkins from watchdogd in 305 seconds (998 totalcheckins since monitoring last enabled), shutdown in progress

Backtrace (CPU 2), Frame : Return Address

0xffffff8125ab3c40 : 0xffffff802291868d

0xffffff8125ab3c90 : 0xffffff8022a52ab5

0xffffff8125ab3cd0 : 0xffffff8022a4463e

0xffffff8125ab3d20 : 0xffffff80228bea40

0xffffff8125ab3d40 : 0xffffff8022917d57

0xffffff8125ab3e40 : 0xffffff8022918147

0xffffff8125ab3e90 : 0xffffff80230bf328

0xffffff8125ab3f00 : 0xffffff7fa3fdfaae

0xffffff8125ab3f10 : 0xffffff7fa3fdf486

0xffffff8125ab3f50 : 0xffffff7fa3ff4d9c

0xffffff8125ab3fa0 : 0xffffff80228be13e

Kernel Extensions in backtrace:

com.apple.driver.watchdog(1.0)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7fa3fde000->0xffffff7fa3fe6fff

com.apple.driver.AppleSMC(3.1.9)[D2F0B610-83F8-3B84-B0BD-D9D0CC95A697]@0xffffff7fa3fe7000->0xffffff7fa4005fff

dependency: com.apple.iokit.IOACPIFamily(1.4)[2956198D-24F2-3790-A9B2-1EAB9434B906]@0xffffff7fa3fd5000

dependency: com.apple.driver.watchdog(1)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7fa3fde000

dependency: com.apple.iokit.IOPCIFamily(2.9)[2F37AE58-E6B9-3B18-9092-3B80D34C334B]@0xffffff7fa3331000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

19H15

Kernel version:

Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT 2020; root:xnu-6153.141.2.2~1/RELEASE_X86_64

Kernel UUID: 9B5A7191-5B84-3990-8710-D9BD9273A8E5

Kernel slide: 0x0000000022600000

Kernel text base: 0xffffff8022800000

__HIB text base: 0xffffff8022700000

System model name: iMac13,2 (Mac-FC02E91DDD3FA6A4)

System shutdown begun: YES

Panic diags file available: YES (0x0)

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Answer 8

Nov 29, 2020 11:42 AM in response to Calculus_Entropy

PART 2

System uptime in nanoseconds: 10301536046857

last loaded kext at 3867459296310: >!AXsanScheme 3 (addr 0xffffff7fa652a000, size 32768)

last unloaded kext at 4656391720930: >!AXsanScheme 3 (addr 0xffffff7fa652a000, size 32768)

loaded kexts:

>!A!BMultitouch 97

>AudioAUUC 1.70

@fileutil 20.036.15

>AGPM 111.4.4

>!APlatformEnabler 2.7.0d0

>X86PlatformShim 1.0.0

@filesystems.autofs 3.0

>!AMikeyHIDDriver 131

>!AHDA 283.15

@AGDCPluginDisplayMetrics 5.2.6

>!AUpstreamUserClient 3.6.8

>!AHV 1

|IOUserEthernet 1.0.1

|IO!BSerialManager 7.0.6f7

@GeForce 14.0.0

>!A!IHD4000Graphics 14.0.7

>!ABacklight 180.3

>pmtelemetry 1

>!AMikeyDriver 283.15

@Dont_Steal_Mac_OS_X 7.0.0

>!A!ISlowAdaptiveClocking 4.0.0

>!A!IFramebufferCapri 14.0.7

>eficheck 1

>!ALPC 3.1

>!AMCCSControl 1.14

>!ASMCLMU 212

>!AThunderboltIP 3.1.4

>!AVirtIO 1.0

@filesystems.hfs.kext 522.100.5

@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1

@BootCache 40

@!AFSCompression.!AFSCompressionTypeZlib 1.0.0

@filesystems.apfs 1412.141.1

>!ASDXC 1.7.7

@private.KextAudit 1.0

|!ABCM5701Ethernet 10.3.5

>AirPort.Brcm4360 1400.1.1

>!AAHCIPort 341.140.1

>!AACPIButtons 6.1

>!ARTC 2.0

>!AHPET 1.8

>!ASMBIOS 2.1

>!AACPIEC 6.1

>!AAPIC 1.7

>!A!ICPUPowerManagementClient 222.0.0

$!AImage4 1

@nke.applicationfirewall 303

$TMSafetyNet 8

@!ASystemPolicy 2.0.0

>!A!ICPUPowerManagement 222.0.0

|EndpointSecurity 1

>IO!BHIDDriver 7.0.6f7

>!AMultitouchDriver 3440.1

>!AInputDeviceSupport 3440.8

>!AHIDKeyboard 209

@kext.triggers 1.0

>DspFuncLib 283.15

@kext.OSvKernDSPLib 529

|IOAVB!F 850.1

@nvidia.driver.NVDAGK100Hal 14.0.0

@nvidia.driver.NVDAResman 14.0.0

>!ABacklightExpert 1.1.0

>!AHDA!C 283.15

|IOHDA!F 283.15

@!AGPUWrangler 5.2.6

|IONDRVSupport 576.1

|IOSlowAdaptiveClocking!F 1.0.0

|IOAccelerator!F2 438.7.3

@!AGraphicsDeviceControl 5.2.6

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Answer 9

Nov 29, 2020 11:55 AM in response to Calculus_Entropy

PArt 3

>X86PlatformPlugin 1.0.0

>!ASMBusPCI 1.0.14d1

>IOPlatformPlugin!F 6.0.0d8

>!ASMBus!C 1.0.18d1

|IOGraphics!F 576.1

>!AThunderboltEDMSink 4.2.3

@plugin.IOgPTPPlugin 840.3

|Broadcom!BHost!CUSBTransport 7.0.6f7

|IO!BHost!CUSBTransport 7.0.6f7

|IO!BHost!CTransport 7.0.6f7

|IO!B!F 7.0.6f7

|IO!BPacketLogger 7.0.6f7

>usb.networking 5.0.0

>usb.!UHostCompositeDevice 1.2

>usb.!UHub 1.2

|IOAudio!F 300.2

@vecLib.kext 1.2.0

|IOSerial!F 11

@filesystems.hfs.encodings.kext 1

|IOSurface 269.11

>!AThunderboltDPInAdapter 6.2.6

>!AThunderboltDPOutAdapter 6.2.6

>!AThunderboltDPAdapter!F 6.2.6

>!AThunderboltPCIDownAdapter 2.5.4

|IOAHCIBlock!S 316.100.5

>!AThunderboltNHI 5.8.6

|IOThunderbolt!F 7.6.1

|IOEthernetAVB!C 1.1.0

|IO80211!F 1200.12.2b1

|IOSkywalk!F 1

>mDNSOffloadUserClient 1.0.1b8

>corecapture 1.0.4

|IOAHCI!F 290.0.1

>usb.!UEHCIPCI 1.2

>usb.!UEHCI 1.2

>usb.!UXHCIPCI 1.2

>usb.!UXHCI 1.2

|IOUSB!F 900.4.2

>!AEFINVRAM 2.1

>!AEFIRuntime 2.1

|IOSMBus!F 1.1

|IOHID!F 2.0.0

$quarantine 4

$sandbox 300.0

@kext.!AMatch 1.0.0d1

>DiskImages 493.0.0

>!AFDEKeyStore 28.30

>!AEffaceable!S 1.0

>!ASSE 1.0

>!AKeyStore 2

>!UTDM 489.120.1

|IOSCSIBlockCommandsDevice 422.120.3

>!ACredentialManager 1.0

>KernelRelayHost 1

>!ASEPManager 1.0.1

>IOSlaveProcessor 1

|IOUSBMass!SDriver 157.140.1

|IOSCSIArchitectureModel!F 422.120.3

|IO!S!F 2.1

|IOUSBHost!F 1.2

>!UHostMergeProperties 1.2

>usb.!UCommon 1.0

>!ABusPower!C 1.0

|CoreAnalytics!F 1

>!AMobileFileIntegrity 1.0.5

@kext.CoreTrust 1

|IOTimeSync!F 840.3

|IONetworking!F 3.4

|IOReport!F 47

>!AACPIPlatform 6.1

>!ASMC 3.1.9

>watchdog 1

|IOPCI!F 2.9

|IOACPI!F 1.4

@kec.pthread 1

@kec.Libm 1

@kec.corecrypto 1.0

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Answer 10

Oct 28, 2020 7:36 AM in response to karina184

Different users make no difference. SO............what is next? I fear that I am going to hear "Let's do a clean install of Catalina" which will be a pain.

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Catalina 10.15.7 iMac (late 2012) shut down issues: resetting SMC and NVRAM does NOT solve the issue

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