Duet 3 MB6HC 3.5.2 in standalone mode: trouble connecting to DWC

paralepsis

I'm fairly regularly getting stuck in a "connecting loop" (for lack of a better term) when I come back to my browser that was previously connected to my Duet 3 (see screenshot below). What you cannot see in the screenshot is that the green connecting box will be replaced with an orange "connection interrupted" box for a split second before the green box returns.

This is new behavior for 3.5.2, I'm seeing it in Firefox on two different OSX platforms, and I do not think I ever saw this prior to 3.5.2, certainly not with the 3.5.0 prereleases or 3.5.1. Printing does not appear to be impacted.

Typically re-loading the page will fix this, so it's not a showstopper. If I can help debug, I'm happy to.

Screenshot 2024-06-19 at 9.02.14 AM.png

droftarts

@paralepsis Can you test the SD card? Check for free space, speed of transfer etc. See https://docs.duet3d.com/en/User_manual/RepRapFirmware/SD_card#troubleshooting-sd-card-issues

If you're only going to run in standalone, and the SD card is formatted half in FAT32 and half for SBC, it's worth reformatting it so the whole SD card is available for standalone. Don't forget to back up your configuration before formatting it!

Ian

dc42

@droftarts FWIW I often see a reconnection immediately after homing when running 3.6alpha1 on a 6HC. The networking code hasn't changed since 3.5.2 so there could have been a regression in that version.

paralepsis

@droftarts thanks for responding, sure. This all looks ok I think.

SD card summary:

M39
SD card in slot 0: capacity 31.91GB, partition size 31.90GB, free space 31.61GB, speed 25.00MBytes/sec, cluster size 32kB

M122 diagnostics:

M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.5.2 (2024-06-11 17:13:58) running on Duet 3 MB6HC v1.01 (standalone mode)
Board ID: 08DJM-956BA-NA3TN-6J1FL-3S86T-9TBUS
Used output buffers: 3 of 40 (40 max)

...

=== Storage ===
Free file entries: 20
SD card 0 detected, interface speed: 25.0MBytes/sec
SD card longest read time 3.9ms, write time 123.8ms, max retries 0

...

=== Network ===
Slowest loop: 226.79ms; fastest: 0.03ms
Responder states: MQTT(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
= Ethernet =
Interface state: active
Error counts: 0 0 5 1 0 0
Socket states: 5 5 2 2 2 0 0 0
=== Multicast handler ===
Responder is inactive, messages received 0, responses 0

SD card test (text reordered from console for readability):

M122 P104 S32
Testing SD card write speed...
SD write speed for 32.0MByte file was 5.98MBytes/sec
Testing SD card read speed...
SD read speed for 32.0MByte file was 1.99MBytes/sec

modl

Hi, I'm having the same problem, except I'm stuck in a reconnecting / /connected / disconnected loop. Refreshing or closing firefox , and deleting all sites data , doesn't work.
It happens after a somehow long operating time (~ 2 weeks)

Irecently upgraded everything to 3.5.3