This may be hardware issue, note the CPU overheats several times and you're logging MCE events. Try installing the rasdaemon package and running ras-mc-ctl --summary to see what those are.
[ 1263.545673] mce: [Hardware Error]: Machine check events logged Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1773860 Title: package ca-certificates 20180409 failed to install/upgrade: installed ca-certificates package post-installation script subprocess returned error exit status 24 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ca-certificates/+bug/1773860/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
