A bug has been filed with the kernel developers here: https://bugzilla.kernel.org/show_bug.cgi?id=199033
Also, I have confirmed that disabling CONFIG_WDAT_WDT and re-compiling the kernel, as Alexandre suggested, does allow the RTC to run properly. ** Bug watch added: Linux Kernel Bug Tracker #199033 https://bugzilla.kernel.org/show_bug.cgi?id=199033 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743027 Title: error loading realtime clock since upgrading to 17.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743027/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs