Bug#264715: Further information
After instruction from Joey Hess, booted into inti=/bin/sh and determined that
it might not be a display issue -- my untrained eye interprets the logs as
showing a spontaneous reboot of the system initiated right after the cron jobs
start running, and the monitor shutdown is just a symptom of this. The hardware
itself does not complete the shutdown/reboot process.
The last entries of dmesg before I did a reboot via reset button look like this:
Aug 9 22:57:45 localhost /usr/sbin/cron: (CRON) INFO (pidfile fd = 3)
Aug 9 22:57:45 localhost /usr/sbin/cron: (CRON) STARTUP (fork ok)
Aug 9 22:57:45 localhost /usr/sbin/cron: (CRON) INFO (Running @reboot jobs)
So far, so good, since that matches the last entries in my log now, with my
current (emergency) session running. But then we immediately get:
Aug 9 22:57:45 localhost shutdown: shutting down for system reboot
Aug 9 22:57:45 localhost init: Switching to runlevel: 6
Aug 9 22:57:49 localhost kernel: Kernel logging (proc) stopped
Aug 9 22:57:49 localhost kernel: Kernel log daemon terminating.
Aug 9 22:57:49 localhost exiting on signal 15
Time passes, then I get up and hit the reset switch. The next entry is:
Aug 9 23:46:30 localhost syslogd 1.4.1#15: restart.
Could not find any interesting errors in the logs; am currently stumped, and
willing to try anything that doesn't make my other partitions blow up. :)