Everything went great, the clock was detected, I updated the RTC from the system time and added the appropriate lines to /etc/modules and /etc/rc.local
but... when I reboot (without internet access) the system time is not synced with the RTC, that is to say that running date vs sudo hwclock -r reports different times - the RTC is correct and the system time looses several second with each reboot.
interestingly I have to run hwclock -r as sudo, otherwise I get
could it be a permission problem? any ideas on how to fix?
Code: Select all
pi@raspberrypi ~ $ hwclock -r hwclock: Cannot access the Hardware Clock via any known method. hwclock: Use the --debug option to see the details of our search for an access method. pi@raspberrypi ~ $ hwclock -r --debug hwclock from util-linux 2.20.1 hwclock: Open of /dev/rtc failed: Permission denied No usable clock interface found. hwclock: Cannot access the Hardware Clock via any known method. pi@raspberrypi ~ $