My Machine started to behave really weird.
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i have your case that u uploaded from thingiverse. no connection between the frame and the screen.
the display worked it was just i started to se if i could avoid because it sucks that printing a 36h print and after 34h get a failed because the printer got a hickup o i started to remove unused stuff. to se if that was giving problems. and now without the screen connected. the printer has printed pretty much 24/7 no hickups. no freezing.
the reason i updated was that i tought it maybe was useful information for u. and maybe a firmware issue that makes a memory error or memory overload between as u said in the start it has happened on ethernet boards buth not on the wifi boards before.
and just by removing the display the problem is gone.
and it seams that the most of the duet users dont run the paneldue. so maybe it is that the error is a interface problem between duet and panelduo.
so it was more a heads up if u try to solve the problem.
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There are a lot of users using PanelDue, so if this was a firmware issue then I would expect to have had a lot more reports of it. It might just be chance that the problems went away when you disconnected the PanelDue. Or it could be that your TFT panel is faulty, for example if the backlight inverter occasionally draws a high current pulse from the 5V supply then that could compromise power integrity.
Also please check that the S1 parameter is present in your M575 P1 command, or that you have no M575 P1 command at all in config.g. The S1 parameter enables checksums, to guard against corruption of the data sent by PanelDue to the Duet.
