(I also disconnected the WD FireWire 800 external HD and replaced it with a USB 3 Fantom Drive, but not sure if that's related.) Once I did that, the available disk space reports seemed to stabilize and I haven't had any crashes since then. But through all this weirdness no actual data seemed to be lost.Įventually I went through an arduous effort to find and move all the big files and directories that didn't need fusion drive-level performance until I cleared about 300+ GB of free space. Like somehow the OS had lost track of what was free disk space and started writing swap into bad places? I have no idea. And then it would crash again and I would find myself back around 50 GB disk space available. I checked for crash dumps or other kinds of new big files and found nothing.
On rebooting, it now appears that there is just 50 GB or less space left. Disk space appears better now (80 GB available again), so yay! Then the iMac crashes again. I thought maybe swap space was an issue and would delete or move files to a Western Digital FireWire external HD when the computer rebooted. Eventually I noticed that after restarts my Finder windows in the status bar at the bottom were showing very low available HD space (e.g. I ran hardware tests on my drive and RAM, I minimized my application usage, nothing seemed to reliably help. I experienced this issue for days or weeks at a time, often with less than 30 minutes between crashes. I'll tell you anyway in case it helps for me this was on a Late 2015 27" iMac with 3 TB fusion drive. I can tell you I solved this issue, but I can't tell you why it worked. Service:, total successful checkins since load (7090 seconds ago): 709, last successful checkin: 0 seconds ago Service:, total successful checkins since load (7120 seconds ago): 701, last successful checkin: 120 seconds ago Service returned not alive with context : unresponsive dispatch queue(s): -wl Panic(cpu 4 caller 0xffffff801dd53a13): userspace watchdog timeout: no successful checkins from in 120 seconds I used to brag to my friends how stable and secure MacOS was.
Mac os 7.6 application crash type 1 android#
This time it crashed with Android studio open, safari open, the app store open, and amazon music playing. The odd thing is one time it crashed when I wasn't even using the computer.
Mac os 7.6 application crash type 1 upgrade#
With the upgrade to Big Sur 11.0.1, my iMac Retina 4K 6-core intel core i7 has become highly unstable.
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