MacBook Pro (Retina, 15-inch, Mid 2015) randomly got kernel panic

It's been 24 hours since setting `sudo pmset -a GPUSwitch 0` and so far no crashes. You might be very correct.

If it's an issue with the AMD drivers that was introduced in Catalina then I really hope Apple has a fix for this in the next release. So disappointing.

Interesting. Are you using an eternal monitor regularly?

Please report back on how things go with you? I have had zero crashes since using `sudo pmset -a GPUSwitch 0` over 4 days ago.

Thanks!

I have the same Mid 2015 MacBook Pro 15" model. I've been struggling with the same issue since the update.

Today, I was reviewing all items that may be unsupported on my machine, and causing the issue.

I discovered that I had 2 screen savers that were no longer supported in Catalina. Once I removed them from the system, my sleep/wake function has returned. Give it a shot!

Remove Paragon, it fixes my crashes issue

After eliminating the unsupported screen savers and turning off the fancy new dynamic Catalina one, it resolved my kernel panic / sleep mode issue. However, I was also noticing major battery life drain, charge holding less than 2 hours, and a very hot battery. I gave up this past weekend and downgraded to Mojave. NOT an easy chore. Everything is now working perfectly. I am utterly horrified that Apple has yet to tell their most dedicated users that the new OS and disk partitioning will render their precious macs unusable.

I am having the same issue after upgrading to 10.15.1.

2015 Retina MacBook Pro 15"

2.5 GHz Quad-Core Intel Core i7

AMD Radeon R9 M370X 2 GB

I also have tried disabling automatic graphics switching but it hasn't helped. The computer passes Apple Diagnostics.

The panic always references com.apple.iokit.IOAcceleratorFamily2.

As I continue trying to troubleshoot this on my system I found another thread with the same issue: Kernel Panic in Catalina - Apple Community

Perhaps it would be useful if we shared the 3rd-party software we generally have running. Here's my list: VMware, Adobe Creative Cloud, DefaultFolderX, TypeIt4Me, iStatMenus, Firefox, BBEdit, 1Password, CARROTweather, Fetch (5.8 beta), and Launchbar.

Interesting. I use an external monitor all day at work with my unit. However, this bug is causing my machine to crash 3 times a day, sometimes more, so it's killing my productivity.

Have you confirmed that disabling the discrete graphics card fixes the issue? Have you had any crashes since doing that?

Let me know. Thanks!

I have 100% the same issue. And after restarting all the bluetooth doesn't work so I have to do another restart for the Bluetooth to come back on properly again.

I tried disabling the Automatic Graphic card switching from the System Preferences > Energy Saving menu but that didn't help either:

I tried the same....seemed to help for a while (30 minutes). My MBP mid 2012 15" 500gb SSD is practically unusable. I get a black screen about 15 times a day, Have switched to my iMac, but am considering switching to windows. This MBP was R30k (about $2000) and with the cost of support here in South Africa, it's cheaper to buy a new lap-top.

Thanks CCQueen! I also have an iMac so it is a big decision changing everything back, but am grateful for your sentiments. This is disgusting behaviour from Apple and I've come a long way from my excitement when originally moving all 4 devices to them when trading in my htc for an iPhone 3GS, what seems like decades ago.

My MacBook Pro just crashed twice in an hour whilst using the external monitor. I'm going to disconnect from the monitor and use your `sudo pmset -a GPUSwitch 0` method to see if it can prevent crashing. This loss productivity is killing me. Takes me 20 minutes to setup my development environment after each crash.

Another question: Do I have to run this after every reboot?

Thanks!

Josh