Since installing Catalina yesterday, multiple crashes from userspace watchdog timeout

Soooooo....

I downloaded the new UAD software and reattached the Sonnet echo express. No crash for over an hour. I then reconnected the OWC mini dock and two monitors. No crash for over an hour. I then reconnected the OWC Thunderbay 8...and all **** broke loose.

Near as I could figure at the time, it’s was coming down to one of two things: A particular drive in the Thunderbay appears to be problematic and may be causing an issue, OR the fact that the Sonnet and Thunderbay are daisy chained may be causing an issue. I decided that I would explore both options the next day and unplugged the Thunderbay leaving only the Sonnet box attached.

Everything was solid. I was just about to go to bed when suddenly the computer restarted. After 7.58 hours, the panic and crash happened. I shutdown the machine, restarted logged in...and a few minutes later it happened again.

The only thing connected or powered up is the Sonnet box. Why would that configuration have been stable for 8 hours then suddenly start being flaky? It makes NO SENSE.

I disconnected the sonnet box and rebooted and logged in to see if the iMac Pro could make it through the night by itself. It didn’t. So this isn’t about just connections to external gear. Apparently I could fix all of that, and it wouldn’t matter because with no external gear attached/powered on it will still re-boot.

I’ve owned Apple products since the early 90s. I sold Apple computers 20 years ago. Buddies accuse me of being a fanboy. But this is fast becoming my worst Apple experience to date.

Hi everyone, I'm experiencing this since a few weeks with my 2020 iMac 27 - AMD Radeon Pro 5700 XT 16 Go.

Sound remains ok when glitches come, but the iMac completely freezes and I must restart (hard reboot)

NVRAM, PRAM, SMC done but nothing changes.

Any help would be appreciated, thanks.

I also have a Drobo and am experiencing this crashing when the screen goes to screen saver - pretty much every time. Wish there were a solution...

Same thing here. I have an eGPU w/Mac mini and this is constantly happening after upgrading to Catalina.

I also want to mention that this seems to happen randomly (trackpad just dies and computer freezes), and also when the computer seems to want to start its screensaver.. or idle for too long.

Just to follow up. Sleeping my machine overnight caused it to NOT reboot on it's own. Seems this issue is only when the system sleeps on it's own (as another commenter mentioned).

db

This is actually happening even when not idle. Today happened maybe 5-6 times. Other days, nothing.

I did an SMC & NVRAM reset. No dice.

Hey Andrew,

unfortunately I tried the SMC reset and it did not change anything.

I spent 3 days since my last crash and it happened while going out of sleep.

impossible to reproduce for sure

Same issue here. 2019 15” I9/Vega 20/32GB. Fresh (complete erase/format + install from recovery) Catalina install.

Seems to crash about 15-20 minutes after sleep/will not wake.

I have a problem in may iphon

Do you know how you find out which apps are 32bit? I've got so many.

I have the same issue, when connected to external monitors and my computer goes into sleep.

Still an issue for me even with 10.5.1