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Freezing mid print
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I've had two instances today where during a print, the printer freezes and stops responding completely. The touchscreen does not respond, and the printer has to be power cycled to continue.

I'm printing gcode generated in 3.2.23 and firmware version

Here is the gcode I was using:

Event Timeline

kent created this task.Dec 13 2018, 2:04 PM

@kent: Please upgrade to .44 . One of the things I added recently was an error screen that will help us determine whether those are USB read errors or something else (I am betting on the latter).

Actually, I am betting on the former... we probably are seeing USB read errors.

west added a subscriber: west.Dec 13 2018, 3:02 PM

@mjpelletier and I are looking into the USB board not reading and causing errors

kent added a comment.Dec 13 2018, 3:27 PM

I flashed to marlin and ran the same print, this time with the console open.

the console output during the error is:

< [14:16:48] echo:enqueueing "M117 Leveling X Axis"
< [14:16:48] echo:enqueueing "G28 Z0"
< [14:16:48] echo:enqueueing "M400"
< [14:16:48] echo:enqueueing "M121"
< [14:16:48] echo:enqueueing "M211 S0"
< [14:16:48] echo:Active Extruder: 0
< [14:16:48] echo:enqueueing "M906 Z725"
< [14:16:58] echo:Active Extruder: 0
< [14:16:58] X:0.00 Y:0.00 Z:290.00 E:0.00 Count X:0 Y:0 Z:145000
< [14:16:58] echo:enqueueing "G1 Z312"
< [14:16:58] echo:enqueueing "M400"
< [14:16:58] echo:enqueueing "M906 Z960"
< [14:16:58] echo:Soft endstops: OFF  Min: X-27.00 Y-36.00 Z-9.00  Max: X299.00 Y292.00 Z292.00
< [14:16:58] echo:enqueueing "M211 S1"
< [14:16:58] echo:enqueueing "M120"
< [14:16:58] echo:enqueueing "G28 Z0"
< [14:17:00] echo:enqueueing "M117 Leveling done."
< [14:17:00] echo:Soft endstops: ON  Min: X-27.00 Y-36.00 Z-9.00  Max: X299.00 Y292.00 Z292.00
< [14:17:00] echo:Active Extruder: 0
< [14:17:00] echo:Active Extruder: 0
< [14:17:00] X:0.00 Y:0.00 Z:290.00 E:0.00 Count X:0 Y:0 Z:145000
< [14:17:34] Unexpected error while accessing serial port. [Errno 5] Input/output error
< [14:17:34] Closing the USB printer connection.
< [14:17:34] Printer connection listen thread stopped for None
< [14:17:37] Closing the USB printer connection.

This is the error message displayed on the screen:

west added a comment.Dec 13 2018, 3:29 PM

@kent the error message on the screen is what @marcio added to identify what was stopping the printer it wasnt a fix, just a way to help identify the problem

@kent: Yes. If there are USB errors, try changing the USB drive, if the problem persists, we likely will need to bring the printer back to R&D for troubleshooting.

karrad added a subscriber: karrad.Dec 17 2018, 11:26 AM

Quiver 8 has seen two USB read failures in initial testing, will work with Dani to get this one swapped out for Board updates.

tutley added a subscriber: tutley.Jan 16 2019, 1:26 PM

The latest USB board revision takes care of the instability in the clock, as well as the potential boot up issue due to a slow rise time on the voltage regulator.
@mjpelletier are we okay to close this ticket?

DaniAO closed this task as Resolved.Feb 18 2019, 12:06 PM
DaniAO added a subscriber: DaniAO.

@mjpelletier @kent since we have heard nothing else since the update, going to close this one down. Can always re-open if needed.