I have a printer with an Makerbase MKS SGEN-L V2.0-board. Its working since a year or more. I have set it up with a new Display, MKS 12864 Mini V3.0, also equipped with an SD-Reader.
When starting The Raspberry Pi 3, it is not working. The flashing light stops and it hangs. It boots when i unplug the USB-connection to the mainboard.
The boot works when i disable the SD-Card-Reader on the display.
What did you already try to solve it?
I tried to alter some settings inside the Marlin-Firmware, its a Marlin Bugfix-Version.
Have you tried running in safe mode?
Did running in safe mode solve the problem?
You can download this in OctoPrint's System Information dialog ... no bundle, no support!)
browser.user_agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36
env.plugins.pi_support.model: Raspberry Pi 3 Model B Plus Rev 1.3
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
I have tried this, but i am not sure if i can start Opctopi in Safe Mode the way i need it... The problem only occurs when starting The Pi and the printer by switching them on at the same time.
It also happens when starting the Pi with printer switchedoff power source, cause the Printer gets its 5V via USB.
The pi does not boot until i disconnect the USB, and before doing so there is no Wifi-Access.
The Printer ist not taking power from the Pi. The board has a big powersource, their mains are in the same current-loop, the same power socket. As mentioned in the last post, this only happens when using the LCD-SD-card-slot, it does not happen when using the internal sd-card.