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Since installing Catalina yesterday, multiple crashes from userspace watchdog timeout

Since I installed Catalina yesterday, I have had around five crashes with the error:


panic(cpu 6 caller 0xffffff7f8879cad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 seconds


Any solutions. iMac Pro had been operating fine before update. Only apps running at the time were Chrome and TimeMachine backing up to a Drobo 5N2 (plus of course background apps like Google Backup and Sync, Dropbox, etc).

iMac Pro

Posted on Oct 8, 2019 9:20 AM

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Posted on Oct 11, 2019 12:43 PM

This happens to me reliably when i have an external monitor connected though a docking station and system is idle. If i have a video or other non static content displaying on the external monitor, my MacBook Pro I9 does not crash. This is new for Catalina and same configuration did not crash on Mojave. Need a fix...

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Since installing Catalina yesterday, multiple crashes from userspace watchdog timeout

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