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    Duet2 wifi - blank screen on pc - ok on cellphone

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    Duet Hardware and wiring
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    • brunoapundefined
      brunoap
      last edited by

      On android, every browser tested (Opera, firefox, chrome), everything is ok.
      Using latest dwc version 3.1.1 all went ok on android.
      Opening http://duetip/reprap.htm works even on my tv browser (which i dont know what it is). But keeps disconnected on pc browsers.

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        Can you try clearing your browser cache?

        Z-Bot CoreXY Build | Thingiverse Profile

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        • brunoapundefined
          brunoap
          last edited by

          Hi. Tried everything regarding browser version, cache, cookies. Even tried using portable browsers.

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          • Phaedruxundefined
            Phaedrux Moderator
            last edited by

            I might try removing the entire /www folder and replacing it fresh from the zip file.

            Z-Bot CoreXY Build | Thingiverse Profile

            brunoapundefined 1 Reply Last reply Reply Quote 0
            • brunoapundefined
              brunoap @Phaedrux
              last edited by

              @Phaedrux
              I've tried that too.
              Even replaced and reformatted the sd card. Using fresh new downloaded sd card contents.

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              • brunoapundefined
                brunoap
                last edited by brunoap

                This is my M122 dump result:

                M122
                === Diagnostics ===
                RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet WiFi 1.02 or later
                Board ID: 08DGM-956GU-DJMSW-6J9FA-3SD6R-TUMMG
                Used output buffers: 3 of 24 (15 max)
                === RTOS ===
                Static ram: 27980
                Dynamic ram: 94120 of which 44 recycled
                Exception stack ram used: 264
                Never used ram: 8664
                Tasks: NETWORK(ready,636) HEAT(blocked,1224) MAIN(running,1880) IDLE(ready,80)
                Owned mutexes: WiFi(NETWORK)
                === Platform ===
                Last reset 00:00:57 ago, cause: software
                Last software reset at 2020-05-23 15:19, reason: User, spinning module GCodes, available RAM 8672 bytes (slot 1)
                Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0xffffffff Task MAIN
                Error status: 0
                MCU temperature: min 28.9, current 29.7, max 29.8
                Supply voltage: min 12.3, current 12.3, max 12.4, under voltage events: 0, over voltage events: 0, power good: yes
                Driver 0: standstill, SG min/max not available
                Driver 1: standstill, SG min/max not available
                Driver 2: standstill, SG min/max not available
                Driver 3: standstill, SG min/max not available
                Driver 4: standstill, SG min/max not available
                Date/time: 2020-05-23 15:20:12
                Cache data hit count 97470607
                Slowest loop: 4.22ms; fastest: 0.13ms
                I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
                === Storage ===
                Free file entries: 9
                SD card 0 detected, interface speed: 20.0MBytes/sec
                SD card longest read time 2.3ms, write time 0.9ms, max retries 0
                === Move ===
                Hiccups: 0(0), FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
                Bed compensation in use: none, comp offset 0.000
                === MainDDARing ===
                Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
                === AuxDDARing ===
                Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
                === Heat ===
                Bed heaters = 0 -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
                USB is idle in state(s) 0
                Aux is idle in state(s) 0
                Trigger is idle in state(s) 0
                Queue is idle in state(s) 0
                Daemon is idle in state(s) 0
                Autopause is idle in state(s) 0
                Code queue is empty.
                === Network ===
                Slowest loop: 199.67ms; fastest: 0.09ms
                Responder states: HTTP(2) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
                HTTP sessions: 2 of 8

                • WiFi -
                  Network state is active
                  WiFi module is connected to access point
                  Failed messages: pending 0, notready 0, noresp 1
                  WiFi firmware version 1.23
                  WiFi MAC address 80:7d:3a:15:81:11
                  WiFi Vcc 3.39, reset reason Unknown
                  WiFi flash size 4194304, free heap 23408
                  WiFi IP address 192.168.1.51
                  WiFi signal strength -51dBm, reconnections 0, sleep mode modem
                  Socket states: 0 0 0 0 0 0 0 0
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                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  This one may be for @chrishamm to investigate

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • brunoapundefined
                    brunoap
                    last edited by brunoap

                    When opening page on android web browsers, no errors showing on paneldue. Even when reloading pages. DWC opens on android with newer version 2.x and 1.x (http://duetip/reprap.htm). No errors at all.

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                    • brunoapundefined
                      brunoap
                      last edited by

                      Tried connecting on Firefox running inside a linux machine on virtualbox. Not working too.

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                      • brunoapundefined
                        brunoap
                        last edited by brunoap

                        Damn. Tried disabling all protection on Kaspersky Total security. Errors happened too. Tried uninstalling Kaspersky. It started working again!
                        This has made me nuts. Im troubleshooting this since 10 hours ago.
                        Kaspersky is the problem.
                        For any still unknown reason (for me), kaspersky blocks connection between pc and duet wifi. Kaspersky was installed since a few months. Some update has made this mess.
                        Thank you all! 😊

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                        • dc42undefined
                          dc42 administrators
                          last edited by dc42

                          @brunoap said in Duet2 wifi - blank screen on pc - ok on cellphone:

                          ERR_UNKNOWN_URL_SCHEME

                          Looks like DWC is trying to open ports 79 and 1504 on the Duet. The requests should be rejected by the WiFi module, however if they are being done concurrently with fetching the web files, then this could be causing the WiFi module to run out of concurrent connections or message buffers. That may explain the "incomplete write" message.

                          I can't think why DWC would open those ports, unless it's something that's relevant when DWC is taking to a single-board computer connected to a Duet 3.

                          What operating system does your PC run? Do you have anything installed on the PC that might be intercepting TCP/IP messages and adding a few of its own? Have you done a virus scan on the PC recently?

                          EDIT: your response of 20:05 arrived just after I finished sending this.

                          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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                          • dc42undefined
                            dc42 administrators
                            last edited by

                            @brunoap, please can you connect to the Duet via USB/YAT and send M111 S1 P14 to enable WiFi debugging. Then try to connect to the Duet in your browser again. Report any messages that appear in YAT.

                            This sounds related to an issue that we had in version 1.21, and in that case I was able to resolve it by increasing some buffer parameters in the WiFi firmware. That might work again in this case.

                            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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