May 7 16:28:41 M圜omputer systemd: Started Network Manager Script Dispatcher Service. May 7 16:28:41 M圜omputer dbus: Successfully activated service '_dispatcher' May 7 16:28:41 M圜omputer systemd: Starting Network Manager Script Dispatcher Service. May 7 16:28:41 M圜omputer NetworkManager: dhcp4 (wlp5s0): state changed bound -> bound May 7 16:28:41 M圜omputer NetworkManager: domain name 'lan' May 7 16:28:41 M圜omputer NetworkManager: lease time 300 May 7 16:28:41 M圜omputer dbus: Activating via systemd: service name='_dispatcher' unit=''
And I would be happy to update my post with any more info. If it helps, below is the end of my /var/log/syslog prior to the crash. I have checked the contents of these files, have web-searched the messages, but don't know enough to have any meaningful insights. I am not a Linux expert, but my understanding is that at this point I should check /var/log/syslog, /var/log/kern.log, and similar files. I end up having to hard reboot by holding the power button. When frozen, the keyboard and mouse are unresponsive, and various Ctrl+ Alt+ and Alt+ SysRq+ combinations (commands on this page for example) don't seem to do anything. The same freezes occurred when running Firefox from live USB versions of Ubuntu 16.04 and 17.10. I know it is Firefox because my system works fine with Chrome. I am running Ubuntu 16.04 and Firefox freezes my system about once a day.