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    CONSTANT AJAX disconnect errors

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    • Jareryundefined
      Jarery
      last edited by

      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!

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      • Jareryundefined
        Jarery
        last edited by

        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.

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        • dc42undefined
          dc42 administrators
          last edited by

          Jarery, thanks for your report. What make and model of router are you using?

          Patel, thanks for your reports too. have you tried with DuetWiFiServer 1.20beta7-nosleep yet? Also, what make and model of router are you using?

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • Jareryundefined
            Jarery
            last edited by

            I have 2, an Asus RT-AC3100 as my main and located 3m away, and an Asus RT-AC66U used as a access point located about 12m away. I get similar results with and without the AP router turned on.

            Running latest Merlin Firmware, 380.68_4

            Edit:
            last disconnect at 2:56, its now 4:03 and connect button will not reconnect. Will take a reboot or reset of wifi module. Cannot ping via terminal

            edit 2: wifi reset (M552 S-1, G4 S1, M552 S1) showed a reconnect on the paneldue screen but could not connect web browser, a power cycle to the printer did work.

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            • KeeganBundefined
              KeeganB
              last edited by

              I have updated to DuetWiFiServer 1.20beta7-nosleep and am testing it now.

              Curiously, I am not sure that they "print simulation" is working. Its been going for 33mins on a print file that should have taken less than 10mins.

              I gave up on the print simulation issue. I guess Ill sort that later.

              I have been connected since 8:42pm.
              I printed a 14 min calibration cube. Success.
              Started a 6.5 hour print at 10:45pm

              Fingers crossed for the morning.

              Artemis
              Rostock Max v2
              Orion

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              • dc42undefined
                dc42 administrators
                last edited by

                Keegan, which main firmware version are you running? Simulation mode was broken in 1.20b2 and b3 but fixed in b4.

                Duet WiFi hardware designer and firmware engineer
                Please do not ask me for Duet support via PM or email, use the forum
                http://www.escher3d.com, https://miscsolutions.wordpress.com

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                • KeeganBundefined
                  KeeganB
                  last edited by

                  @dc42:

                  Keegan, which main firmware version are you running? Simulation mode was broken in 1.20b2 and b3 but fixed in b4.

                  You know what? That is it! I am running 1.20beta2.

                  I am still connected this morning. It has been over 10hrs now. I am starting the third print now.

                  Artemis
                  Rostock Max v2
                  Orion

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                  • JohnOCFIIundefined
                    JohnOCFII
                    last edited by

                    @Jarery:

                    I have 2, an Asus RT-AC3100 as my main and located 3m away, and an Asus RT-AC66U used as a access point located about 12m away. I get similar results with and without the AP router turned on.

                    Running latest Merlin Firmware, 380.68_4.

                    Just as a related data point – I have two routers also running Asus Merlin 380.68_4. Once is an RT-N66R (https://www.asus.com/us/Networking/RTN66R/) running just as an AP, and the main router/AP is an RT-AC68P (https://www.asus.com/us/Networking/RTAC68P/).

                    The DuetWiFi usually connects to the RT-N66R.

                    I've stayed connected for up to 4 hours. I've not left the printer on longer than that yet. 🙂

                    I've had occasional disconnects, but not enough to bother me yet. If I did longer prints on this printer, it might crop up as an issue more often. If my printer is typically on for 3 hours, I might have one disconnect every third session.

                    I'm running 1.19.2.

                    John

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                    • KeeganBundefined
                      KeeganB
                      last edited by

                      John, when you get the disconnect, are you locked out or can you just click connect to get back?

                      Artemis
                      Rostock Max v2
                      Orion

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                      • dc42undefined
                        dc42 administrators
                        last edited by

                        Hi all,

                        Here are two new builds of DuetWiFiServer:

                        https://www.dropbox.com/s/5cp3w947vonp36s/DuetWiFiServer-1.20b8.bin?dl=0

                        https://www.dropbox.com/s/8k83pw56gefezqm/DuetWiFiServer-1.20b8-nosleep.bin?dl=0

                        Those of you having issues maintaining a wifi connection, please try the first one (needs DuetWiFiFirmware 1.20b4 or 1.20b6). If that doesn't improve things, try the second one. The recommended way to install these is to download the one you want, rename it to DuetWiFiServer.bin, then upload it through the Settings->General page of DWC.

                        If for any reason you can't reconnect after installing it, please try re-installing it by sending M997 S2 via USB or PanelDue. I had to do this once on one of my test systems.

                        Please report your findings here. As a bonus, access point mode is working in this build.

                        Duet WiFi hardware designer and firmware engineer
                        Please do not ask me for Duet support via PM or email, use the forum
                        http://www.escher3d.com, https://miscsolutions.wordpress.com

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                        • Jareryundefined
                          Jarery
                          last edited by

                          M997 S0
                          Error: M997: Firmware binary "DuetWiFiFirmware.bin" is not valid for this electronics

                          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

                          • Install worked via panel due.
                          1 Reply Last reply Reply Quote 0
                          • dc42undefined
                            dc42 administrators
                            last edited by

                            Jarery, I'm sorry, I should have said rename it to DuetWiFiServer.bin. I have corrected the text. You are still running beta7, so you'll need to do it again.

                            Duet WiFi hardware designer and firmware engineer
                            Please do not ask me for Duet support via PM or email, use the forum
                            http://www.escher3d.com, https://miscsolutions.wordpress.com

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                            • JohnOCFIIundefined
                              JohnOCFII
                              last edited by

                              @KeeganB:

                              John, when you get the disconnect, are you locked out or can you just click connect to get back?

                              I've seen both types of disconnects, but only the last disconnect was one where I had to power cycle the printer. It was also the only disconnect I've seen since upgrading to 1.19+. The previous disconnects (same timeout AJAX message) I was just able to hit reconnect from the DWC web page.

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                              • JohnOCFIIundefined
                                JohnOCFII
                                last edited by

                                @KeeganB:

                                John, when you get the disconnect, are you locked out or can you just click connect to get back?

                                Of course just after posting that, I had a disconnect. 🙂 This occurred after the printer had been running for 2.5 hours. I had done one 1 hour print during this time. I was able to reconnect just by pressing the Connect button in DWC.

                                Perhaps it is time to try that newer firmware, but my disconnects don't seem to happen near as frequently as yours.

                                John

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                                • JohnOCFIIundefined
                                  JohnOCFII
                                  last edited by

                                  Here's another thought/question? For those (like me) that only have very sporadic disconnections, could it be a something that DWC is watching for, and disconnects if the web page senses no activity for some period of time? So - if you clicked a button every 3 minutes, would it stay connected?

                                  Just a thought…

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                                  • dc42undefined
                                    dc42 administrators
                                    last edited by

                                    John, have you worked through https://www.duet3d.com/wiki/WiFi_disconnections_and_AJAX_timeout_errors ?

                                    Duet WiFi hardware designer and firmware engineer
                                    Please do not ask me for Duet support via PM or email, use the forum
                                    http://www.escher3d.com, https://miscsolutions.wordpress.com

                                    1 Reply Last reply Reply Quote 0
                                    • JohnOCFIIundefined
                                      JohnOCFII
                                      last edited by

                                      @JohnOCFII:

                                      Here's another thought/question? For those (like me) that only have very sporadic disconnections, could it be a something that DWC is watching for, and disconnects if the web page senses no activity for some period of time? So - if you clicked a button every 3 minutes, would it stay connected?

                                      Just a thought…

                                      I can rule that out. 🙂

                                      I had just entered M122, and about 6 seconds later it disconnected. That time, I could not ping the IP of the DuetWifi, and the router had lost it's entry for the printer. I restarted the printer.

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                                      • JohnOCFIIundefined
                                        JohnOCFII
                                        last edited by

                                        @dc42:

                                        John, have you worked through https://www.duet3d.com/wiki/WiFi_disconnections_and_AJAX_timeout_errors ?

                                        Yes, I have worked through those steps. Again, for me, the disconnects are slightly above an amusement, not yet reaching to the level of annoyance, but if I can help troubleshoot, I will try.

                                        When reading through the list just now, I see that my Maximum number of AJAX retries was set to 1. I thought I had increased that, but perhaps that was on 1.18 and it didn't carry over – or maybe I never did set it. I just raised it to 3.

                                        My RSSI is hovers around -58db to -60db.

                                        Thanks,

                                        John

                                        Listed below is the M122 output as well as the rest of the console log from just before the last disconnect today:

                                        [[language]]
                                        1:44:07 PMDisconnected.
                                        1:43:54 PMM122
                                        === Diagnostics ===
                                        Used output buffers: 3 of 32 (9 max)
                                        === Platform ===
                                        RepRapFirmware for Duet WiFi version 1.19.2 running on Duet WiFi 1.0
                                        Board ID: 08DAM-999TL-MQ4S8-6JKDJ-3SJ6K-16BVW
                                        Static ram used: 21176
                                        Dynamic ram used: 96176
                                        Recycled dynamic ram: 1432
                                        Stack ram used: 1304 current, 9096 maximum
                                        Never used ram: 3192
                                        Last reset 04:39:00 ago, cause: power up
                                        Last software reset reason: User, spinning module GCodes, available RAM 3192 bytes (slot 1)
                                        Software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
                                        Error status: 0
                                        Free file entries: 10
                                        SD card 0 detected, interface speed: 20.0MBytes/sec
                                        SD card longest block write time: 567.6ms
                                        MCU temperature: min 26.6, current 37.2, max 41.9
                                        Supply voltage: min 11.4, current 12.3, max 12.5, 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: 2017-11-11 13:43:52
                                        Slowest main loop (seconds): 0.569336; fastest: 0.000000
                                        === Move ===
                                        MaxReps: 4, StepErrors: 0, FreeDm: 240, MinFreeDm 120, MaxWait: 6821249ms, Underruns: 7, 0
                                        Scheduled moves: 0, completed moves: 0
                                        Bed compensation in use: none
                                        Bed probe heights: 0.054 -0.032 0.039 -0.088 0.008
                                        === Heat ===
                                        Bed heater = 0, chamber heater = -1
                                        Heater 0 is on, I-accum = 0.0
                                        Heater 1 is on, I-accum = 0.7
                                        === 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 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
                                        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 1.19.2
                                        WiFi MAC address a0:20:a6:16:eb:66
                                        WiFi Vcc 3.10, reset reason Turned on by main processor
                                        WiFi flash size 4194304, free heap 37944
                                        WiFi IP address 192.168.62.118
                                        WiFi signal strength -59dBm
                                        Reconnections 1
                                        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)
                                        1:21:04 PMFile Models/Joelbot_Final_3_50p_KMR3.gcode print time was 1h 20m
                                        12:02:29 PMCalibrated 6 factors using 10 points, deviation before 0.043 after 0.038
                                        12:00:59 PMM32 Models/Joelbot_Final_3_50p_KMR3.gcode
                                        File Models/Joelbot_Final_3_50p_KMR3.gcode selected for printing
                                        11:53:49 AMConnection established!
                                        10:58:35 AMDisconnected.
                                        10:00:47 AMFile Calibration Tests/xyzCalibration_cube_KMR3.gcode print time was 0h 33m
                                        9:29:57 AMCalibrated 6 factors using 10 points, deviation before 0.166 after 0.040
                                        9:28:13 AMM32 Calibration Tests/xyzCalibration_cube_KMR3.gcode
                                        File Calibration Tests/xyzCalibration_cube_KMR3.gcode selected for printing
                                        9:24:43 AMG32
                                        Calibrated 6 factors using 10 points, deviation before 0.043 after 0.042
                                        9:19:52 AMG32
                                        Calibrated 6 factors using 10 points, deviation before 0.376 after 0.040
                                        9:18:30 AMConnection established!
                                        9:18:29 AMPage Load complete!
                                        
                                        
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                                        • someuniqnameundefined
                                          someuniqname
                                          last edited by

                                          @Jarery:

                                          Looking back I think everyone with issues reported using routers with Merlins firmware? Perhaps anyone with Ajax disconnect issues who is running stock firmware on their router could confirm/deny.

                                          Researching Asus routers that drop wireless clients, one thread had success turning off beamforming. In Merlins firmware there are two beamforming settings under "Professional" tab, Explicit and Universal.
                                          Another thread reported wireless client issues dropping with both Merlins and stock firmware but problem cleared when they used DD-WRT firmware.

                                          Last night I turned off both beamforming options. My system has stayed connected overnight. I wont be able to run it through any prints till tomorrow, but perhaps some others with the issue capable of printing sooner could also test and let us know prior to that.

                                          If this route fails I'll start messing with other router firmware. If anyone with issues is using dd-wrt firmware please let me know so i don't go down that path unnecessarily.

                                          the router connected to the duet is running dd-wrt and yes i'm also having the Ajax disconnects since a couple of versions. it seems that after the Ajax disconnect the router and connection is still alive (or back) since i can ping and nmap shows the open port. however the when connecting via http i get an instant disconnect (see my post earlier in this thread)

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                                          • dc42undefined
                                            dc42 administrators
                                            last edited by

                                            I'm closing this thread because it is becoming impossible to navigate and different users are running different firmware versions, and starting a new one called "WiFi disconnect errors". If you are having wifi disconnection issues, please see that thread.

                                            Duet WiFi hardware designer and firmware engineer
                                            Please do not ask me for Duet support via PM or email, use the forum
                                            http://www.escher3d.com, https://miscsolutions.wordpress.com

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