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macOS constantly crashing and restarting machine

After upgrading to macOS Catalina it's been rebooting randomly every hour with the following stack trace after reboot. Looks like a GPU issue. I'm on a new iMac 27inch with the Radeon Pro Vega 48


Posted on Oct 8, 2019 4:18 AM

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Question marked as Top-ranking reply

Posted on Oct 15, 2019 4:16 AM

I've maybe a solution to reseting the SMC causing the kernel panic at shutdown... https://support.apple.com/en-us/HT201295

(👉🏻 com.apple.driver.AppleSMC(3.1.9)[EB9D605D-85B1-3506-8B2E-ABD195817A4F]@0xffffff7fa0930000->0xffffff7fa094efff)

🤔 Maybe it's work or not.


https://apple.stackexchange.com/questions/372183/catalina-crashing-at-shutdown-with-this-error

22 replies
Question marked as Top-ranking reply

Oct 15, 2019 4:16 AM in response to GW1921

I've maybe a solution to reseting the SMC causing the kernel panic at shutdown... https://support.apple.com/en-us/HT201295

(👉🏻 com.apple.driver.AppleSMC(3.1.9)[EB9D605D-85B1-3506-8B2E-ABD195817A4F]@0xffffff7fa0930000->0xffffff7fa094efff)

🤔 Maybe it's work or not.


https://apple.stackexchange.com/questions/372183/catalina-crashing-at-shutdown-with-this-error

Oct 24, 2019 9:23 AM in response to zttztt

So if you have a backup (or not?), you need to start with a clean install and a setting up a new session on Catalina, so:👇🏻

👉🏻 Restart the mac and press up and hold + R to recovery menu,

👉🏻 Go to Disk Utility

https://support.apple.com/en-us/HT208496

👉🏻 At the view menu, select show all devices and select the disk to erase.

👉🏻 Enter a name of the disk such as Macintosh HD and choose APFS and GUID Partition Map.

👉🏻 Click Erase to begin.

👉🏻 Check theses volumes Macintosh HD and Macintosh HD Datas, if it's seems to be OK? Quit the Disk Utility and go to the Catalina Installation.

https://support.apple.com/en-us/HT201314


👉🏻 After that, you need to setting up steps your new user session, not for choosing a backup with Time Machine.

https://support.apple.com/en-us/HT204350


👉🏻 Go to Migration Setup, choose the Time Machine Backup and click to continue.

👉🏻 Select your name, check the content to transfer, and uncheck Apps, Otherfiles and folders and Computer & Network Settings and click to continue to start the transfer.

https://support.apple.com/en-us/HT204350



I hope it's work with the new OS clean for you.



Oct 11, 2019 8:02 AM in response to GavinFoo

I logged a bug with Apple but have had no response. This was done before Catalina went public. Poor QA is all I can say. I can’t believe there’s yet no 10.15.1 with a fix even in beta.


I ended up wasting two days of my life on this and restored back to Mojave. Not going to try Catalina for another couple of months or more till it’s a .2 release or something or till they confirm it’s fixed in the radar.

Oct 11, 2019 9:21 AM in response to Emhsee

I upgraded from High Sierra to Catalina, 6 Oct on my MacbookPro 2015 15". All seemed fine until Tuesday when firstly I suddenly lost passwords for e-mail accounts logged in Mail and now this morning (11th October) my browsers suddenly stopped working - I can connect to internet (domestic wifi or via iphone) and my VPN can connect but I cannot load pages in Safari, Firefox or Chrome - the browsers say that I am not connected to the internet.


Not only are these problems very irksome the fact that new problems continue to emerge suggests a lack of overall stability.


I went to the Applestore in Stratford and was informed that genius appointments are not available until next Thursday - ditto Covent Garden and Regent Street. Very helpful (not).


Machine now very slow from start up too.



Oct 13, 2019 5:46 AM in response to Steady Drifter

Yeah it was rushed. Surprising to me how I've got nothing unique about my setup - I've read everywhere that Catalina crashes if you have external monitors connected to your mac, and you'd think they'd have tested this. It's not as though we're able to install custom hardware into these things - it's standard, Apple provided hardware and GPU issues on a fresh install says a lot about their QA.


I'm back on Mojave, I also didn't feel there was anything in Catalina that would tempt me to upgrade. I will eventually have to upgrade since I develop software and need to be able to live in the same environment my customers do. It sucks but I'm going to pass on Catalina, possibly till it's 10.15.4 or something.


The constant hangs and crashes have scarred me because it took one whole day of trying various things to try and fix it and then one whole day to restore back to Mojave. Two days wasted when I couldn't afford wasting a minute.

Oct 13, 2019 12:26 PM in response to GW1921

It's too early to say if it's for wait the 10.15.4, we don't know for the moment, the most important is the fix for kernel panic at the next update, Apple has token our reports on this kernel panic on this first version of Catalina and well'see.


Apple working on the fix for Catalina since the kernel panic's reports on this first version, for the moment I stay on Mojave before the fix for Catalina.




Oct 31, 2019 2:10 AM in response to kaneiji

Have an iMac I upgraded to 10.15.1 yesterday. Within a few hours I was working in Pages and the computer just shut down. Sent the crash report to Apple. Happened once more when I was checking email, then apparently again after that as it was at the sign in page this morning. Sent the crash report to Apple.


Within two minutes of typing this crashed again. Unfortunately I had Time Machine down for a couple of months so cannot roll back. Definitely did not have any problems prior to yesterdays update to 10.15.1.

Nov 10, 2019 3:49 AM in response to GW1921

After I posted to this Apple support contacted me and I sent them the necessary logs, but no resolution as of yet. I did a re install of Catalina did not work, also read a post regarding sleep mode might be affecting it so I turned everything off in settings including screen saver and manually put the iMac in sleep mode when not using it. This morning left the computer for about 10 minutes open in Safari when I came back it was at the Login screen for Restart because of a problem. Last step if no update this week from Apple will be to do a Time Machine backup with Mojave. Wondering if anyone with this problem has done that and if it is successful. Still a little concerned that this last Catalina update affected the hardware.

Nov 10, 2019 4:54 AM in response to rugby49

I restored to Mojave from Time Machine and all seems to be working. ITunes is still a joke but I’ve given up on the idea of them fixing it.


The fact you you have heard nothing from them on this very serious issue is beyond disappointing.


Apple: you have an obligation to not drop major OS overhauls that aren’t ready for prime time. And further, when your OS fails, you have an obligation to fix it timely and provide hands on customer support. You’ve failed on all counts.

Nov 13, 2019 1:05 PM in response to GW1921

I was seeing the crashes and reboots even when not connected to external display or charger, just using it standalone on battery power. I also saw it when connected to a monitor, it doesn't seem to matter. I reformatted, installed Mojave, and then upgraded to Catalina again after 15.1 released and I haven't seen the issue again. We do have users that have old Mojave installs who have upgraded to 15.1 and are seeing the same problem so it hasn't been fixed.

macOS constantly crashing and restarting machine

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