I use Jetpack 5.0.2, I have battery connected and I changed 50-udev-default.rules but I still have an issue with proper time keeping. After I set the time manually and power off and on the system the time is kept only in RTC. When I try to sync it to Local time and Universal time shown by “timedatectl” it doesn’t work. “sudo hwclock --hctosys” gives me “hwclock: Cannot access the Hardware Clock via any known method.” And time is not synchronized. Can you please help me to fix it?
hwclock --verbose hwclock from util-linux 2.34 System Time: 1650548033.593276 Trying to open: /dev/rtc0 No usable clock interface found. hwclock: Cannot access the Hardware Clock via any known method.
EDIT: Today I get:
root@ubuntu:/home/jetsonorin# hwclock --verbose hwclock from util-linux 2.34 System Time: 1650545823.016839 Trying to open: /dev/rtc0 Using the rtc interface to the clock. Last drift adjustment done at 1661946454 seconds after 1969 Last calibration done at 1661946454 seconds after 1969 Hardware clock is on UTC time Assuming hardware clock is kept in UTC time. Waiting for clock tick... hwclock: select() to /dev/rtc0 to wait for clock tick timed out ...synchronization failed