Random freeze and restart

Hi

I have serious problem with my udoo, it started freezing up and random restarting.

I think this started sometime around christmas time 2018, i was messing around with a few arduino scripts and i think the restart/freezes started after that, but i'm not sure.

What i've tried:

• unplugged the battery for a while to reset the bios to default.
• complete format of the ssd and reinstalled Windows
• update to the latest firmware

Even after this it still freezes or restarts from time to time, before this i could run it for months straight without any problems.

I'm kinda clueless what the problem is at this point, any ideas?

As i'm writing this i'm running a CPU stress test with core temps around 50-53C, stabile so far, next thing would be a ram test.

My setup:
Device: Udoo x86 Ultra
OS: Windows 10 Enterprise 64bit installed on a 250gb m.2 ssd
Firmware: v1.06

 

Update: I installed the Transcend SSD Scope tool, no indication of anything wrong with my SSD
CPU stress test still running without any problems, small increase in temps 50-55C.

 

After almost 24 hours seems like its not the CPU, gonna do a ram test.

 

The Udoo board will reboot when it gets a "triple fault," to use VirtualBox terms. An exception while handling an exception can cause this.

 

Could this be because of a bad arduino script?

 

I don't know specifically, but you could intentionally write a bad Arduino script and see if induces the behavior you are seeing. Division by zero and reading/writing to 0x0 are always good for breaking things.

 

Just finished 2 runs in memtest, no errors, gonna focus on arduino if i can replicate the error somehow.

 

Try to upload the blink example.
If your current script is using Arduino pin 9 it could accidentally trigger the special power management function of the UdooX86 https://www.udoo.org/docs-x86/Ardui...aswell_Power_Management_From_Arduino_101.html

 

I actually just put the "Power On Intel Curie" function to Disabled in the BIOS, as i understand that should disable the arduino, and before that i uploaded a empty script.

Still get random reboots and freezes.

 

Have you tried running an external debugger to the serial port?

 

Unfortunately i don't have one, or i would have.

Currently i'm testing an older firmware, 1.03, that is the one before i updated to 1.05, and then 1.06, i had most luck with that one.

If i get freeze or reboots with that, then it must be a faulty board or maybe the PSU.

 

It could also be that the EC Watchdog is triggered somehow. See for example this topic: https://www.udoo.org/forum/threads/bluetooth-keeps-stopping-on-udoo-x86-ultra.17940/

 

Still running on 1.03 no reboots or freezes yet, dont know if there have been made any changes to how the Watchdog functions in the following firmware updates.

 

When I logged on this morning the device was frozen again, at this point I have no clue what it can be.
Everything is running default, clean windows installation and temps are fine, nothing connected to the Arduino.

The only thing I can try now is switching out the PSU.

 

doing some testing with the Watchdog disabled.

 

TCO watchdog disabled and EC Watchdog disabled, still freeze.

running on a new PSU now, lets see if that works.

 

fingers crossed...

 

nope.... it died again, i don't know at this point, i did notice a pattern, it seems to happen every 40-48 hours.

 

Can you nail it down to a specific interval? When I was porting an rtl8139/8169 ethernet driver for the Udoo to the unsupported OS I am using, I found the driver died after ten minutes. It turns out that a timer in the driver was attempting to access a statistics register on the ethernet card that was not present. The functionality had been removed for the rtl8111 chip. Being able to distinctly identify a fixed interval could help isolate the problem.

 

I'll see what i can do, if my theory holds, then it will freeze again march 15th