Hi,
/var/lib/dpkg/info/thinkfan.postinst
...
if [ -x "/etc/init.d/thinkfan" ]; then
update-rc.d thinkfan defaults >/dev/null
invoke-rc.d thinkfan start || exit $?
fi
Looks like an attempt to register and start thinkfan with the old init
system. Is this appropriate for your system ?
If you really use sysV init rather than systemd, you should check whether
there are links
/etc/rc*.d/*thinkfan
pointing to file
/etc/init.d/thinkfan
If you use systemd, then there is the riddle why there is an executable
file /etc/init.d/thinkfan.
------------------------------------------------------------------------
The script
https://sources.debian.net/src/thinkfan/0.9.3-1/rcscripts/thinkfan.init
when run with argument "start" executes
start-stop-daemon --start --quiet --pidfile /var/run/thinkfan.pid --exec /usr/sbin/thinkfan
So
ps -ef | grep thinkfan
should tell whether the daemon is running or whether you have to start
it on your own (most probably as superuser).
Have a nice day :)
Thomas