你好，
jetpack5.1.2 Orin NX8G, 电池的电压3.1V,使用的是RTC0,起初是可以设置hwclock -s， 后来几次开关机后设置hwclock -s 报出如下错误：hwclock: select() to /dev/rtc0 to wait for clock tick timed out。请问这个问题该怎么解决？谢谢
What’s the version? Does rct1 have the same problem?
sudo hwclock -v
hwclock from util-linux 2.34
System Time: 1722408082.058918
Trying to open: /dev/rtc0
Using the rtc interface to the clock.
Last drift adjustment done at 1722388073 seconds after 1969
Last calibration done at 1722388073 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
我们使用的是rtc0，所以不清楚rtc1的情况。
新的发现，拔掉电池后，重新装上，可以做hwclock -s,但是时间又回到1970年，像是时间重置了。这并没有解决根本问题，请问，有没有什么别的方法能够解决这个问题？谢谢
You can try time sync from network. You can also use timedatectl to set some specific time then time will retain after boot.
If the RCT didn’t keep the time I would suspect the HW problem.
可以保存时间，但是开机不能同步时间
主要是使用hwclock -s 失败，硬件上是没有问题的
Maybe try below command.
sudo hwclock --directisa
这个命令一样会报出：hwclock: select() to /dev/rtc0 to wait for clock tick timed out。
Are you using the devkit or custom board for Orin NX?
Please share the full dmesg and the result of the following command on your board.
$ timedatectl status
$ cat /proc/interrupts|grep nvvrs-pseq-irq
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