Nothing external connected? Like USB hub with external drives.
I have done a clean install of Catalina 10.15.6 (19G2021) in a separate APFS volume on the same drive where I have my original Catalina install, and I still have trouble with waking the computer from sleep. Kernel panics with ”com.apple.driver.AppleSMC” in the log (similar to your log above) and also a few occasions where my main display (I have two connected to the computer) stays dark and the second one is turned on, but only shows me a spinning beach ball – can't do anything.
At the same time all this is on a MacPro5,1 which isn't officially supported, but since the problems I have are similar to those with supported Mac and since it seems not all wit MacPro5,1 has the ”watchdog” Kernel Panic I am really curious as to what is going on here. I'm repeating myself, but I have no similar problems when waking my work computer which is a 13" MacBook Pro from 2018 so it seems it's not affecting everyone –I think we'd hear more about it if every Catalina install was suffering from it.
Strange huh? ??♂️
It's absolutely ridiculous.
I have a bunch of MBP 16 inch for dev purposes, can replicate across them.
I'm now able to replicate every time.
No screens, in-fact I've never plugged anything other than a charger into these machines!
No virtualisation software, I have Xcode and that's about it. No weird or wonderful docker/dev tools.
Here's a video of me causing the panic on my system that was up for only 53 seconds, about 3 minutes ago:
So basically:
1) boot computer running latest Catalina 19G2021.
2) reboot within a minute of booting and see KP.
I cut that video short because it takes about 6 minutes to KP, but the spinner eventually goes and the fans blast for a second, then boom KP.
I didn't even launch an app. FWIW, I only get KP on reboot, never during use. I don't see this issue on my 15inch MBP.
UPDATE:
I produced this KP about 15 times in a row. I reset NVRAM and since then I can't reproduce.
It will come back, it's all software related.