16.04 problems - install, inactive/suspend, hard disk

[Ralf Mardorf]

On Fri, 9 Sep 2016 13:05:03 -0700, rikona wrote:
>> Simply run  
>
>>   sudo apt-mark auto thermald  
>
>> to undo it.  
>
>If I leave it as manually installed, does this mean it will not be
>updated automatically? Any other implications?

It doesn't affect upgrades. It will be upgraded the same way,
either marked "auto" or marked "manually".
Installed packages are marked as "manually" installed and dependencies
of those packages are marked as "auto". If you remove a "manually"
installed package then
  sudo apt-get autoremove
or
  sudo apt autoremove
will remove the dependencies that were automatically installed.
In your case "thermald" was installed as a dependency of another
package, so if you would remove this other package and then run
"apt autoremove" it wouldn't remove "thermald" as long as it is marked
"manually".

>> Regarding https://bbs.archlinux.org/viewtopic.php?id=164849 it will
>> stop, if you let it run for a day or night.  
>
>Good site. I did some more searching and got enough clues to try it.
>It DID stop, but took > 12 hours.
>
>The box had crashed after the above. [snip]
>What is the best thing to look at to help understand why it crashed?
>Also, is there another way into the box at that time to do some
>checking?

You could take a look at log files in /var/log or by running
the command "journalctl". If you won't or can't boot the install, you
could take a look at the log files by another Linux, e.g. from a live
media.

To take a look at the binary journalctl log files from another Linux,
you need to use the command "strings" or access the install by chroot,
respl. systemd-nspawn from the other Linux.

Since I haven't a clue why your install crashes, I can't recommend
what log file could be most promising, you need to google and follow
Ubuntu troubleshooting guides.

Regards,
Ralf