MacOS Mojave Locks Up

Since a few weeks now, two of my Macs running Mojave lock up occasionally for 1 to 3 minutes. After that, it replays any mouse click that it omitted while blocked. Sometimes it is still possible to switch to console and the ps top is below. Has anyone else experienced something like that? I can't find an incident on the Web which would really match. I would suspect a recent update to cause that. I am not sure whether secd is really at fault as it is difficult to record the system state once the system locks up. Activity Monitor is also not helpful for the same reason, even if I keep it running. It seems to happen more often immediately after boot. Once working a while, chances are less for it to lock up.

Upgrading the OS is currently not an option since I need to work on software not supported in Catalina.


USER               PID  %CPU %MEM      VSZ    RSS   TT  STAT STARTED      TIME COMMAND

chris             8179  98.6  8.4 18616316 704848   ??  U    Mon09PM  71:38.35 /usr/libexec/secd

chris            18667  10.0  1.7 106934540 140388   ??  Ss   10:31AM   1:06.93 /System/Library/StagedFrameworks/Safari/WebKit.frame

windowserver      190   7.7  0.3  6801240  21568   ??  Ss   Sun07AM 154:55.00 /System/Library/PrivateFrameworks/SkyLight.framework

chris            18523   1.6  0.4  4959904  30068   ??  S    10:27AM   0:09.96 /Applications/Utilities/Terminal.app/Contents/MacOS/

coreaudiod        129   0.9  0.0  4315048   3800   ??  Ss   Sun07AM  15:53.82 /usr/sbin/coreaudiod
Is there really no one out there, experiencing the same issue? My desktop mac still is hard to work with but my Macbook Air recovered from this issue just after a week or two. Seems like a specific update fixed it. I'm still hoping for a similar update from Apple for my desktop mac.
MacOS Mojave Locks Up
 
 
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