Core one crash After longer print. BSOD (not a ground issue)
 
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Core one crash After longer print. BSOD (not a ground issue)  

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Ckobar
(@ckobar)
Estimable Member
Core one crash After longer print. BSOD (not a ground issue)

Hi. The last day I experienced my first blue screen. I printed two jobs wich took about 5 and 7 hours each.

each time the print finished but than the printer beeped constantly and showed a blue screen with some „marlin error“

I have my motors grounded, so that should not be the reason.
I printed a testpiece in 1 hour and it did fine. I than only altered one setting. I reduced the perimeter speed to the point where the print would take 8 hours. And after that I had the blue again.
Also varied the hight. But the longer prints course the error. Regardless of the height

latest slicer version. And happened with latest alpha an RC fw.

(Right now I’m printing 4 , 8 and 9 hour prints to see were it fails.)

any ideas ?

thanks

This topic was modified 3 weeks ago 2 times by Ckobar
Posted : 10/10/2025 8:43 pm
mnentwig
(@mnentwig)
Estimable Member
RE: Core one crash After longer print. BSOD (not a ground issue)

Hi,

just a thought: When you see the error again, maybe take a screenshot. The more information you provide...

Posted : 10/10/2025 10:08 pm
Ckobar
(@ckobar)
Estimable Member
Topic starter answered:
RE: Core one crash After longer print. BSOD (not a ground issue)

it showed this.

 

Posted : 11/10/2025 9:38 am
mnentwig
(@mnentwig)
Estimable Member
RE: Core one crash After longer print. BSOD (not a ground issue)

OK... I see the line in the source code but this really needs to be commented by someone who is familiar with the firmware.

Looks like the printer has detected a condition where it's supposed to wait for a response that is impossible in its current state so it BSODs.

Taking a guess (knowing very little about the internals), this could be hardware misbehaving. 

Is there any chance that electronics are getting too hot in long-running jobs? I'd take covers off e.g. the BuddyBox, put a ventilator nearby for some forced airflow and try again (not as a solution but to rule out localized overheating).

https://github.com/prusa3d/Prusa-Firmware-Buddy/blob/31edcaadfb3612db0533f4a06396d32f6020bff4/src/common/marlin_server.cpp#L3532

Posted : 11/10/2025 12:38 pm
mnentwig
(@mnentwig)
Estimable Member
RE:

BTW are you running the latest firmware? The screen reads 6.4.0-alpha+11774 but I'd expect "RC" for the latest "release candidate" version.

Just double-checking (you wrote  >>And happened with latest alpha an RC fw.)

A stable released version might be a safer bet...

This post was modified 3 weeks ago 2 times by mnentwig
Posted : 11/10/2025 2:05 pm
Ckobar
(@ckobar)
Estimable Member
Topic starter answered:
RE: Core one crash After longer print. BSOD (not a ground issue)

yes. its on RC too.

btw. just saw, that on alpha and RC the board and MCU temp are not shown anymore under Sensorinfo. (works under 6.3)

Do you see the same ?

Posted : 12/10/2025 3:35 pm
mnentwig
(@mnentwig)
Estimable Member
RE: Core one crash After longer print. BSOD (not a ground issue)

Same for me, 0.0 degrees. That's a bug... I wonder whether that is related e.g. if an overtemperature condition was never spotted, lacking sensor readings...

Posted : 12/10/2025 3:47 pm
hyiger
(@hyiger)
Prominent Member
RE: Core one crash After longer print. BSOD (not a ground issue)

 

Posted by: @mnentwig

BTW are you running the latest firmware? The screen reads 6.4.0-alpha+11774 but I'd expect "RC" for the latest "release candidate" version.

Just double-checking (you wrote  >>And happened with latest alpha an RC fw.)

A stable released version might be a safer bet...

I should show 6.4.0-RC at the top of the screen. If not then the firmware didn't install. 

"Some filaments feel the rain, others just get wet"

- Bob Marley

Posted : 12/10/2025 3:52 pm
Ckobar
(@ckobar)
Estimable Member
Topic starter answered:
RE:

@hyiger. To satisfy you 🙂

 

I tested the temp-bug with all latest 4 fw-versions.( quite easy via connect btw)

This post was modified 3 weeks ago 2 times by Ckobar
Posted : 12/10/2025 5:53 pm
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