The only place known to me that does that is /etc/init.d/hwclock.sh,
which is from util-linux. Something similar is also done under upstart
from /etc/init/hwclock.conf where hwclock is called with --systz. This
quite plausibly opens rtc as well.

However, these two scripts aren't being run at all any more under
systemd -- there it would be timedated which accesses /dev/rtc, but I
don't see how this is being activated that early (it usually doesn't run
at boot at all).

Can you please confirm whether this happens under upstart or systemd? In
the latter case, can you please do

   sudo journalctl -b > /tmp/journal.txt

and attach /tmp/journal.txt here? Thanks!

** Package changed: init-system-helpers (Ubuntu) => util-linux (Ubuntu)

** Changed in: util-linux (Ubuntu)
       Status: New => Incomplete

** Changed in: util-linux (Ubuntu)
   Importance: Undecided => Low

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You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to init-system-helpers in Ubuntu.
https://bugs.launchpad.net/bugs/1410604

Title:
  ISST-LTE: unable to open rtc device

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