Camera RTCPU gone bad after 49.7 days - fix available?

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
1

Hi,

we are seeing the 49.7-day “Camera RTCPU gone bad” failure on Jetson Xavier NX, L4T 35.6.0

2025-12-02T00:45:14.093389+00:00 ivii-iriis-232240000770 kernel: \[4295040.231028\] tegra186-cam-rtcpu bc00000.rtcpu: Alert: Camera RTCPU gone bad! restoring it immediately

Kernel timestamp at failure is ~4295000s, i.e. the 2^32ms rollover — the same root cause as in these threads:

The answer given there was: fixed in JetPack 6.2.2 / L4T 36.5.0, no patch for r35. But Xavier NX cannot move to JetPack 6 — T194 is not supported there. That leaves us with a device family where a known, reproducible failure has no fix path at all.

So, concretely:

  • Is there any JetPack 5 / L4T 35.x release in which this is fixed for T194? A yes or no is enough to unblock our planning.
  • If no: is a patched camera-rtcpu-t194-rce.img planned, and on what timeline? We are happy to validate a test binary in a 60-day run.
  • If it is won’t-fix for T194, please say so explicitly and add it to the L4T 35.x release notes as a known issue. It is not documented anywhere today, and we only discovered it after a unit failed in the field.

We have units in production and need to know whether to plan mandatory reboots below 49 days or wait for a firmware fix.

Thanks.

4

hello MarkusHess,

just an FYI, JetPack 5 upcoming End-of-Life notice.

>> Q1
there’s no JetPack 5 / L4T 35.x release include this 49.7-day bug fix.

>> Q2
we’ll not back-port this change to rel-35. so, there’s no patched camera-rtcpu-t194-rce.img available.

>> Q3

I agree, let me arrange resources for checking it.

yes, you should have to plan this.

8

Hi JerryChang,

bad news… May, are there sources available for the firmware, so that we could try to fix it on our own? We could also sign a NDA if necessary.

Of course, new devices are based on Orin, but there are a lot of Xavier based devices in the field that are affected by this bug. So, it would be good if we can find any solution to solve this issue.

9

hello MarkusHess,

please check the attachment, Bug6721585_Sep08.zip (254.1 KB)
it should address this specific 24/7 camera-stream failure after ~49.7 days for JP-5.1.7/r35.6.5 on Xavier.
please apply the attached t194 rce-fw for testing, looking forward to your test results.