Have an issue for a long time that my server freeze after reboot or shutting down VM.   Memtest is done and no errors.   Have an screen session with "tail -f" run but nothing is logged in the time when restarted the VM. See attached file.   What happens is that a lot of cores is at 100% some seconds after restarted the VM. syslog.txt_tail_f.txt tower-diagnostics-20191116-0815.zip