Dear nvidia team: I can’t sync the rtc time to system time by command “hwclock -s” and report error below: hwclock: select() to /dev/rtc0 to wait for clock tick timed out Please help us to resolve.It’s emergent.

Hi @brian.wu , I’ve confirmed with internal that this patch is missing in JP6.x release. It could help with a race condition issue between nvidia-vrs-pseq driver and IRQ registration. Thanks again for pointing out this difference. Hi @592803276 , Please apply [JP6.2]RTC clock read timout on orin …

What’s the BSP version? Try below. [image] How to Use RTC on JetPack 5.0.2? Learn how to set up the RTC system on Jetson Xavier NX, including changing the RTC device, adjusting system time, and configuring RTC settings.

BSP version is 36.4.3.I have already tried the way you said and it takes no effect.Below is the error dmesg log when I run the command “hwclock -s”: [7737dfa8ea535616e4d5b8a1b5b918a0]

Hi, Could you put same module on NV devkit and test if you could reproduce this error?

I have already put same module on NV devkit and I can’t reproduce the error.But there is also a difference the NV devkit board is without a rtc battery.This test environment is different.

Do you have full dmesg to share?

dmesg.log (67.1 KB) I have attacted the dmesg log.

Could you measure the voltage at that pin VCC_RTC and share the result?

[image] WayneWWW: pin VCC_RTC VCC_RTC=3.15V

[image] WayneWWW: Could you put same module on NV devkit and test if you could reproduce this error? Today, our hardware colleague welded a battery to the NANO devkit and flashed it with sdkmanager.Then we found that the same problem still occurred. After testing it four times, it occurred t…

Hi 592803276, [image] 592803276: Today, our hardware colleague welded a battery to the NANO devkit and flashed it with sdkmanager. Do you mean the issue only happen when the RTC battery is connected? (i.e. would you hit the issue when RTC battery is not connected?) We’d like to verify on t…

[JP6.2]RTC clock read timout on orin nx

Robotics & Edge Computing Jetson Systems Jetson Orin NX

ShaneCCC July 17, 2025, 6:38am 3

What’s the BSP version?
Try below.

Running hwlock -r -f /dev/rtc0 wait for clock tick timed out when using a custom carrier board

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[JP6.2]RTC clock read timout on orin nx

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