Wifi module keeps disconnecting

dc42

@kirk001 said in Wifi module keeps disconnecting:

Disconnections occur when idle. I haven't been able to print. I can't stay connected more than 10 seconds.

That's worse than I've ever heard happen before. Please can you connect a PC running e.g. YAT or Pronterface to the Duet, and send M111 S1 P13 (if using YAT, set the end-of-line sequence to "LF only"). This will enable WiFi debugging. When DWC connects, you will see a few lines of debug. When you get a disconnection, there may be some more debug messages - please post them here.

And have no password at the moment (it was really tedious to have to enter a password 5 times in one minute because it kept disconnecting every 10 seconds.)

The latest DWC (1.21.1) remembers the password when it reconnects.

kirk001

Something odd just happened. I logged into my Duet from 2 different computers. On one, I connected directly to the IP address, and on the other, I connected to my "duet.local" address. The one connected directly to the IP address has stayed connected for over an hour now while the "duet.local" connection has disconnected 20+ times. I haven't tried printing yet. but this is the longest I've been able to stay connected.

dc42

@kirk001 said in Wifi module keeps disconnecting:

Something odd just happened. I logged into my Duet from 2 different computers. On one, I connected directly to the IP address, and on the other, I connected to my "duet.local" address. The one connected directly to the IP address has stayed connected for over an hour now while the "duet.local" connection has disconnected 20+ times. I haven't tried printing yet. but this is the longest I've been able to stay connected.

Interesting! Were you previously always using "duet.local" to connect?

If you are able to capture a Wireshark trace showing the network traffic on the PC at the time it disconnects, that may also help us diagnose the problem.

kirk001

Yes "Duet" was the name I put in the config.g file and "Duet.local" was the address I've been using.

I'm downloading Wireshark now.

kirk001

I was able to do a Wireshark capture (I hope I did it correctly.) I saved it to a file (1.7Mb). Should I upload it here or e-mail it to you?

dc42

@kirk001 said in Wifi module keeps disconnecting:

I was able to do a Wireshark capture (I hope I did it correctly.) I saved it to a file (1.7Mb). Should I upload it here or e-mail it to you?

Please post it on Dropbox or another file sharing site, and post the link here, if you are happy that it doesn't contain confidential information.

kirk001

https://www.dropbox.com/s/rgbvi0l4k5xb25u/Duet Stream.pcapng?dl=0

dc42

Thanks, that's on my list to look at soon.

dc42

@kirk001 said in Wifi module keeps disconnecting:

https://www.dropbox.com/s/rgbvi0l4k5xb25u/Duet Stream.pcapng?dl=0

I tried to download that file but it looks like you deleted it. Do you still have it?

Knaudler

Hello

I have Wifi Problem since 1.20

if wifi AP reboots, DuetWifi never reconnect
all Clients reconnects fine - Duet nope
need to Power off (or go via USB and restart network)

I using Unifi wifi AP Mesh - works great
when need to update, reprovisioning, scan frequencies something likes this,
wifi disconnects short time
checked settings - all fine

no Problem with other clients (10-20)
DuetWifi no reconnect after wifi disconnect/signal lost

reset wifi, delete wifis ...no

checkt with 1.20, 1.21 nope

no I'm using wifiServer 1.19.2 - that works fine !

with unifi I can push wifi reconnect for spezial client or can block clients
so I can test reconnection of DuetWifi

now I'm using this kombination:

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet WiFi 1.02 or later
Firmware Version: 2.0(RTOS) (2018-06-05b3)
WiFi Server Version: 1.19.2 <-------
Web Interface Version: 1.21.1

no wifi Problems any more
stable and faster
and the AP shows the hostname of duetwifi again

connection Data from AP:
99% (-52 dBm) 72.2 Mbps 54 Mbps

good, stable upload speed (100MB gcode)
Uploading File(s), 46% Complete (762.1 KiB/s)

m122:

=== Network ===
Slowest loop: 222.84ms; fastest: 0.01ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8

WiFi -
Network state is running
WiFi module is connected to access point
Failed messages: pending 3, notready 0, noresp 0
WiFi firmware version 1.19.2
WiFi MAC address 60:01:94:31:48:f2
WiFi Vcc 3.08, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 38968
WiFi IP address 192.168.2.220
WiFi signal strength -50dBm, reconnections 0, sleep mode unknown
Socket states: 0 0 0 0 0 0 0 0

so with WifiServer 1.19.2 wifi disconnects eg. reconnect Problems are gone

Greetings from HH
Ingo (Knaudler)

dc42

@Knaudler, thanks for your feedback. My best guess is that the change in the ESP8266 SDK to fix the KRACK WPA2 vulnerability was incompatible with your router. I heard a rumour that this fix was incompatible with some routers.

There is an even newer version of the SDK available now, so I will update DuetWiFiServer to use it in the next few days, then you can test whether it works for you.

Knaudler

thanks
maybe I can double check with Fritzbox 7490 (Labor)
if this can help
FritzBox is most use Router in germany

Knaudler

same with Fritzbox 7490 (last beta - only 20mhz, no pmf)
after wlan off ... 30sek wlan on
no reconnect of wifiServer 1.21
with 1.19.2 ok