CONSTANT AJAX disconnect errors

patel · 7 Nov 2017, 20:58

@dc42:

Were you able to reconnect by pressing the Connect button in DWC, or not?

I try both way refresh F5 and connect button
Run time 20min to 30min max and get Ajax error

dc42 · 8 Nov 2017, 15:46

Patel, a few more questions:

1. Have you worked through https://duet3d.com/wiki/WiFi_disconnections_and_AJAX_timeout_errors ?

2. In the AJAX error message box, is the Error Reason always given as "timeout"?

3. After a disconnection occurs, are you able to ping the Duet?

dc42 · 8 Nov 2017, 16:10

KeeganB, I recall that you are getting disconnections more frequently when your printer is printing than at other times. Please can you try simulating some prints (this is a right-click option in DWC1.19.3) and see if connections are lost more frequently during simulations than when the printer is idle.

Patel, if you too have found that the connection is much less reliable when printing, please try this too.

KeeganB · 8 Nov 2017, 16:43

@dc42:

KeeganB, I recall that you are getting disconnections more frequently when your printer is printing than at other times. Please can you try simulating some prints (this is a right-click option in DWC1.19.3) and see if connections are lost more frequently during simulations than when the printer is idle.

Patel, if you too have found that the connection is much less reliable when printing, please try this too.

Hey David,

I can test that. I need to email you, Roland, and Tony with some of my findings over the past few days. Ill try to type that up today.

Thanks

patel · 8 Nov 2017, 20:10

@dc42:

Patel, a few more questions:

1. Have you worked through https://duet3d.com/wiki/WiFi_disconnections_and_AJAX_timeout_errors ?

2. In the AJAX error message box, is the Error Reason always given as "timeout"?

3. After a disconnection occurs, are you able to ping the Duet?

Error timeout. And I follow your wiki page also.
After error some time connect right way and some time I need press reset button get back

I am tried to do this thing can you accept return.

dc42 · 8 Nov 2017, 20:33

I've noticed a difference between the M122 reports from KeeganB and patel when the wifi connection has been lost and DWC won't reconnect. KeeganB's report from some time ago had this:

HTTP sessions: 1 of 8
Socket states: 0 0 0 0 0 0 0 0
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)

Patel's more recent reports have this:

HTTP sessions: 2 of 8
Socket states: 2 0 0 0 0 0 0 0
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)

Patel's reports are intriguing, because HTTP state 1 should time out after 2 seconds if no data is received.

Patel, were M122 reports obtained by sending M122 from the USB port when DWC has disconnected? Or did you reconnect DWC and send M122 from DWC?

Also, did you have just one device (e.g. PC) connected to the Duet; or did you have a second device (e.g. smartphone, tablet or another PC) connected too, or a second browser tab?

dc42 · 9 Nov 2017, 12:19

1. I have put a build of DuetWiFiServer with sleep disabled (version 1.20beta7-nosleep) at https://www.dropbox.com/s/59s7vfkrf50fe0v/DuetWiFiServer-1.20beta7-nosleep.bin?dl=0. Please try it. The previous build (1.20beta6) is at https://www.dropbox.com/s/djs0p4beitjs60t/DuetWiFiServer-1.20beta6.bin?dl=0.

2. Patel, what make and model of wifi router are you connecting the Duet to?

KeeganB · 9 Nov 2017, 14:02

@dc42:

1. I have put a build of DuetWiFiServer with sleep disabled (version 1.20beta7-nosleep) at https://www.dropbox.com/s/59s7vfkrf50fe0v/DuetWiFiServer-1.20beta7-nosleep.bin?dl=0. Please try it. The previous build (1.20beta6) is at https://www.dropbox.com/s/djs0p4beitjs60t/DuetWiFiServer-1.20beta6.bin?dl=0.

2. Patel, what make and model of wifi router are you connecting the Duet to?

David, I will try the beta7 build tonight.

Email sent.

Thanks

cbusillo · 9 Nov 2017, 14:12

DC. It happens on my Ethernet Duet at idle and while printing. Tried different browsers and computers. Also WiFi and Ethernet connections. I saw you were concentrating on the WiFi server, so I wanted to let you know that might be the wrong direction! Love everything else about the board. Keep up the good work.

Oh you might want to put a warning out that Chinese Duets are out.

Dougal1957 · 9 Nov 2017, 14:24

David

Just tried to install B7-nosleep and sorry to say it failed (FW Loads fine) when trying to diagnose this I sent the usual M552 S0 but got no response back send M552 S1 and get an error saying to stop the wifi before starting it and M552 reposrts WiFi starting (Reloaded the Server fw 3 times with the same results including copying direct to the SD Card and renaming etc).

so decided to try B6 which worked and loaded the Wifi almost instantly.

Hope this helps (Not that I was suffering the Disconnects anyway)

Doug

abecker · 9 Nov 2017, 15:08

Any tips on what I should try. I have noticed I will get the Ajax Disconnect error at random times in a print. Sometimes it is when it is probing with the G32 command, and other times it can be actually printing. Mine will completely disconnect from the network and can't ping it or anything. I will have to wait for the print to finish and then turn it off and back on and it connects back immediately. The printer is in the same room as the router.

Jarery · 9 Nov 2017, 15:12

Loaded on my system. Got a message saying can't rename the file but then it went ahead and updated.
Wont be able to print to later but I can make it run through some large simulation files remotely.

Jarery · 9 Nov 2017, 15:56

JavaScript Error

A JavaScript error has occurred so the web interface has closed the connection to your board. It is recommended to reload the web interface now. If this happens again, please contact the author and share this error message:

Script Error: See Browser Console for Detail

–------------------------------------
Received the above when i resized the browser window, reconnected when the "connect" button is pressed.
Then when i ran M122 and tried to copy the wifi section it disconnected with same error

M122:Network state is running
WiFi module is connected to access point
Failed messages: pending 0, notready 0, noresp 0
WiFi firmware version 1.20beta7-nosle
WiFi MAC address a0:20:a6:10:55:89
WiFi Vcc 3.45, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 28552
WiFi IP address 192.168.2.34
WiFi signal strength -45dBm, reconnections 0, sleep mode none
HTTP sessions: 1 of 8
Socket states: 2 0 0 0 0 0 0 0
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)

number40fan · 9 Nov 2017, 17:44

@cbusillo:

Oh you might want to put a warning out that Chinese Duets are out.

Where?

T3P3Tony · 9 Nov 2017, 17:50

No. One. Mention. The. Clones.

J/k pm where you have seen them

number40fan · 9 Nov 2017, 18:38

I thought I had some good google fu, but I can't find anything. Mythological creature, maybe?

elmoret · 9 Nov 2017, 18:41

I've seen 0.8.5 clones, but nothing for Duet Wifi/Ethernet yet.

patel · 9 Nov 2017, 19:34

@dc42:

1. I have put a build of DuetWiFiServer with sleep disabled (version 1.20beta7-nosleep) at https://www.dropbox.com/s/59s7vfkrf50fe0v/DuetWiFiServer-1.20beta7-nosleep.bin?dl=0. Please try it. The previous build (1.20beta6) is at https://www.dropbox.com/s/djs0p4beitjs60t/DuetWiFiServer-1.20beta6.bin?dl=0.

2. Patel, what make and model of wifi router are you connecting the Duet to?

Devid I try my iPhone it same
An AJAX error has been reported, So the current session has been terminated.
HTTP sessions : 1 of 8
Socket states:- 2 0 0 0 0 0 0 0
Responder states:HTTP(1) HTTP(0)…......

I connect to the duet to USB ( My desktop )
this is the summery .
USB CONNECT TO DUET

m122
SENDING:M122
=== Diagnostics ===
Used output buffers: 1 of 32 (15 max)
=== Platform ===
RepRapFirmware for Duet WiFi version 1.19.2 running on Duet WiFi 1.0
Board ID: 08DDM-9FAM2-LW4SD-6J9D6-3SN6L-12ZHY
Static ram used: 21176
Dynamic ram used: 96040
Recycled dynamic ram: 1568
Stack ram used: 4048 current, 5920 maximum
Never used ram: 6368
Last reset 02:34:02 ago, cause: power up
Last software reset reason: User, spinning module GCodes, available RAM 7408 bytes (slot 4)
Software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
Error status: 0
[ERROR] Error status: 0

Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 34.6, current 35.4, max 36.4
Supply voltage: min 12.0, current 12.0, max 12.2, under voltage events: 0, over voltage events: 0
Driver 0: standstill
Driver 1: stalled standstill
Driver 2: stalled standstill
Driver 3: standstill
Driver 4: standstill
Date/time: 2017-11-09 13:48:43
Slowest main loop (seconds): 0.224121; fastest: 0.000000
=== Move ===
MaxReps: 8, StepErrors: 0, FreeDm: 240, MinFreeDm 239, MaxWait: 5259148ms, Underruns: 0, 0
Scheduled moves: 9, completed moves: 9
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
=== Heat ===
Bed heater = 0, chamber heater = -1
Heater 0 is on, I-accum = 0.0
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
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 ready with "M122" 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
autopause is idle in state(s) 0
Code queue is empty.
Network state is running
WiFi module is connected to access point
WiFi firmware version 1.20beta6
WiFi MAC address 2c:3a:e8:0a:f1:18
WiFi Vcc 3.36, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 33592
WiFi IP address 192.168.0.144
WiFi signal strength -42dBm
Reconnections 0
HTTP sessions: 2 of 8
Socket states: 0 0 0 0 0 0 0 0
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)

Communication Error

An AJAX error has been reported, so the current session has been terminated.

Please check if your printer is still on and try to connect again

m122
SENDING:M122
=== Diagnostics ===
Used output buffers: 10 of 32 (15 max)
=== Platform ===
RepRapFirmware for Duet WiFi version 1.19.2 running on Duet WiFi 1.0
Board ID: 08DDM-9FAM2-LW4SD-6J9D6-3SN6L-12ZHY
Static ram used: 21176
Dynamic ram used: 96040
Recycled dynamic ram: 1568
Stack ram used: 4048 current, 5920 maximum
Never used ram: 6368
Last reset 02:36:37 ago, cause: power up
Last software reset reason: User, spinning module GCodes, available RAM 7408 bytes (slot 4)
Software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
Error status: 0
[ERROR] Error status: 0

Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 35.3, current 35.5, max 35.9
Supply voltage: min 12.0, current 12.1, max 12.2, under voltage events: 0, over voltage events: 0
Driver 0: stalled standstill
Driver 1: stalled standstill
Driver 2: stalled standstill
Driver 3: standstill
Driver 4: standstill
Date/time: 2017-11-09 13:51:18
Slowest main loop (seconds): 0.079102; fastest: 0.000000
=== Move ===
MaxReps: 0, StepErrors: 0, FreeDm: 240, MinFreeDm 240, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 10, completed moves: 10
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
=== Heat ===
Bed heater = 0, chamber heater = -1
Heater 0 is on, I-accum = 0.0
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
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 ready with "M122" 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
autopause is idle in state(s) 0
Code queue is empty.
Network state is running
WiFi module is connected to access point
WiFi firmware version 1.20beta6
WiFi MAC address 2c:3a:e8:0a:f1:18
WiFi Vcc 3.36, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 33592
WiFi IP address 192.168.0.144
WiFi signal strength -43dBm
Reconnections 0
HTTP sessions: 2 of 8
Socket states: 0 0 0 0 0 0 0 0
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)

Jarery · 9 Nov 2017, 20:38

12:35:24 PMConnection established!
10:51:05 AMDisconnected.
9:46:14 AMConnection established!
9:46:14 AMPage Load complete!

Went for lunch, came back, and disconnected….it did reconnect with connect button but it had bene disco'd for over 90 min which usually is long enough for it to reconnect

Firmware Name: RepRapFirmware for Duet WiFi
Firmware Electronics: Duet WiFi 1.0
Firmware Version: 1.20beta6 (2017-11-03)
WiFi Server Version: 1.20beta7-nosle
Web Interface Version: 1.19.3

edit: Made a change to config, rebooted printer....and the below is the printer sitting idle

1:14:26 PMDisconnected.
12:54:22 PMConnection established!
12:54:17 PMDisconnected.
12:38:44 PMConnection established!
12:38:44 PMPage Load complete!

Jarery · 9 Nov 2017, 22:20

My system has disconnected again, 8 min after disconnect I can ping it via terminal fine and it still shows as connected in my router page. Connected via connect button.

Will test again when i get one of the locked out disconnects.