HardFault on access to Web-Control

[Luzifer]

Setup:

• Firmware: 4.0.1-final+1974
  (from shipped stick, latest release from GH does not trigger an update)
• Browser: Firefox 71.0 on Linux
• Hardware: Prusa Mini + Filament Sensor

Steps to reproduce:

• Boot up printer
• Let an IP get assigned
• Open http://<ip of printer>/ in browser
• Experience crash and fan spin-up on printer while getting only a partial website

Note:

• In some cases the site gets loaded without image but with stylesheet
• Most times the site looks like displayed below
• After reset on crash the (broken) website can refresh temperatures without issues
• Possibly related to / duplicate of Fatal crash during printing (x2) #18 but in my case not related to an active print but occurring after freshly starting the printer without any print task, therefore opening a separate issue for this

Trace:

Website:

[Lichtjaeger]

Perhaps I should also mention that a jumper was sent after me. I haven't put it in because I don't use custom firmware. Is it possible that I still need to place it somewhere?

[michalxfanta]

We tested it and yes it's known bug.

[JohnnyDeer]

Hi, bluescreen bug is already fixed on newest versions of firmware, i´m closing this issue.