Duet3 crashes on connect with Firefox and other issues...

pkos

Is anyone noticing any problems with their Duet3s that when you connect with Firefox to it midprint?

I started noticing issues with my board almost immediately after I installed it. Once a print is running, each time I connect to the web ui with Firefox - my printer immediately stops and it gets reset.
If I use Chrome - this doesn't always happen, but if I keep the tab open - prints will always fail midprint - although the time the reset happens is random (even for the same file).

I ran diagnostics and one part does seem indicative of a problem.

M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC v0.6 or 1.0 version 3.01-RC1 running on Duet 3 MB6HC
Board ID: 08DJM-956L2-G43S4-6JKDA-3SJ6T-1B6GH
Used output buffers: 1 of 40 (7 max)
=== RTOS ===
Static ram: 153800
Dynamic ram: 160652 of which 32 recycled
Exception stack ram used: 504
Never used ram: 78228
Tasks: NETWORK(ready,440) ETHERNET(blocked,456) HEAT(blocked,1128) CanReceiv(suspended,3820) CanSender(suspended,1440) CanClock(blocked,1432) TMC(blocked,212) MAIN(running,4392) IDLE(ready,76)
Owned mutexes:
=== Platform ===
Last reset 00:01:31 ago, cause: software
Last software reset at 2020-02-26 21:24, reason: Memory protection fault, spinning module none, available RAM 78132 bytes (slot 2)
Software reset code 0x4171 HFSR 0x00000000 CFSR 0x00000082 ICSR 0x04427804 BFAR 0x000017bc SP 0x20411874 Task 0x45485445
Stack: 204117bc 00408876 01090000 000001f4 00000001 00000000 00000036 20411b24 20411919 20418d68 00408ecd 
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 25.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min 45.0, current 45.3, max 45.6
Supply voltage: min 23.7, current 23.9, max 24.0, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 12.1, current 12.1, max 12.2, under voltage events: 0
Driver 0: standstill, reads 54964, writes 19 timeouts 0, SG min/max 0/140
Driver 1: standstill, reads 54965, writes 19 timeouts 0, SG min/max 0/144
Driver 2: standstill, reads 54970, writes 14 timeouts 0, SG min/max 0/0
Driver 3: standstill, reads 54966, writes 19 timeouts 0, SG min/max 0/57
Driver 4: standstill, reads 54967, writes 19 timeouts 0, SG min/max 0/88
Driver 5: standstill, reads 54967, writes 19 timeouts 0, SG min/max 0/78
Date/time: 2020-02-26 21:26:01
Slowest loop: 6.57ms; fastest: 0.07ms
=== Move ===
Hiccups: 0(0), FreeDm: 375, MinFreeDm: 371, MaxWait: 22328ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 5, completed moves: 5, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
lcd is idle in state(s) 0
spi is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 6.81ms; fastest: 0.03ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 2 of 8
- Ethernet -
State: 5
Error counts: 0 0 0 0 0
Socket states: 5 2 2 2 2 0 0 0
=== CAN ===
Messages sent 367, longest wait 0ms for type 0
=== Linux interface ===
State: 0, failed transfers: 0
Last transfer: 91420ms ago
RX/TX seq numbers: 0/1
SPI underruns 0, overruns 0
Number of disconnects: 0
Buffer RX/TX: 0/0-0

The other issues I have with the board is being unable to get stealthChop to run regardless of how I tweak the settings with M569 and M915... Anything above 5mm/s produces exactly the same noise level (even if I tweak the V and H params on M569). Sometimes, when the board does get quiet (but only after I use M915), I keep getting errors for saying Motor 1 Phase B may be disconnected.
I changed cables, changed the motor, problem persists.

Setup info:
Hypercube Evolution
XY motors are LDO 42STH47-1684AC - X is Motor 0, Y is Motor 1
Extruder motor is generic Nema 17 (Motor 2).
Triple Z motors (generic Nema 17 don't think they matter here) - Motors 3-5.

This setup is what I used with Duet 2 Wifi (with one motor added for extra Z, but the motor was running fine on another printer with Duet Maestro).

Commands to use stealthChop:
M569 P0.# S0 D3 V100 H150
M915 P0.# S3 R0 T1 (this gives lower noise level, but causes the Motor 1 Phase B may be disconnected thing).

I tried updating the firmware - problem persists regardless of version (RC1 and RC2 show the same with the resets and stealthChop not working).

Anyone else with these problems? Or is my board shot?

dc42

Thanks for your report. I use FireFox with my Duet 3 in standalone mode all the time. However the software reset data that you posted indicates it has crashed in a memory management function of the Lwip network stack. I just checked and there have been some updates to Lwip, so I'll upgrade RRF to use the new version in the forthcoming RC3. I'll let you know when we have a preview of that.

Regarding stealthChop, it may be that we need to disable the motor open-load detection when stealthChop is used.

pkos

Awesome! Thanks for the answer

I'll look forward to RC3 and for now I'll resort to just using the PanelDue midprint.

Regarding stealthChop - I'll recheck with RC2 (based on the other thread on the same topic).

pkos

Just to confirm - RC3 solved the problem with crashing lwip and now the printer is indeed MUCH quieter without the M915 workaround.

Thank you for the help

dc42

Thanks for confirming!