Mini 5+ Wifi connection unstable

oc_geek

@dc42 said in Mini 5+ Wifi connection unstable:

@oc_geek have you tried going to Settings/Machine specific/General in DWC and increasing "Number of maximum AJAX retries" above its default value of 2 ?

Will try that suggestion. Now i set it to 4

Unless you are aware of an issue on the card Wifi on a specific channel (which i'm not) this ain't that problem

We have some evidence that low channel numbers (typically 1) are sometimes problematic. What works best also depends on what other devices use the 2.4GHz band, e.g. cordless phones and leaky microwave ovens.

That is ruled out (not using those spectrum areas)

How have you positioned the antenna of the Duet?

external to the printer

... folks we run in circles this way

It IS NOT a wifi issue.
Files trasfers are VERY fast
Is is something else related to the idle state

Diamondback

@oc_geek That doesn't mean it can't be something external... Could be a broken appliance, could be some phone that got recently updated, could be a rogue device etc.
Could also be a bad WiFi firmware on the Duet, but that's certainly not the only option.

oc_geek

@droftarts said in Mini 5+ Wifi connection unstable:

Can you also post the response to M122?

Mine was already attached in the original post

A wireshark trace will help, because it will show which end is causing the disconnections, and give us somewhere to start investigating. As we’re not experiencing these issues in our testing or setups, we’re reliant on users to do this. A directionless investigation will frustrate everyone.

Will try that as well... but i'm already guessing where it is happening...don't we ?

oc_geek

@diamondback said in Mini 5+ Wifi connection unstable:

@oc_geek That doesn't mean it can't be something external... Could be a broken appliance, could be some phone that got recently updated, could be a rogue device etc.
Could also be a bad WiFi firmware on the Duet, but that's certainly not the only option.

Sorry pale but after 3 replaced cards and this beeing the only device on my wireleass having issues....yes it is the only option

chrishamm

@diamondback @oc_geek I've always used my WiFi Duets with a FritzBox 6490 and I haven't seen any connection drops yet. Do you have your PC connected via Ethernet and do the same problems occur when DWC is connected from a different device (cell phone or tablet)? Does M122 report an increasing number of reconnects? If the number of reconnects remains 0, please try to connect to your Duet from a private browsing window to rule out potential interference from third-party addons.

If none of these points help, we'll need a Wireshark dump that contains the traffic between your PC and Duet. That should help us figure out what's going on.

droftarts

@oc_geek said in Mini 5+ Wifi connection unstable:

@droftarts said in Mini 5+ Wifi connection unstable:

@diamondback judging by the graph, you and @oc_geek appear to be using the same router? What is it? Can you also post the response to M122?

Mine was already attached in the original post

Yes, your M122 was. I was asking what router you had, as it appears to be the same as @Diamondback, judging by the graphic.

Ian

oc_geek

@droftarts said in Mini 5+ Wifi connection unstable:

I was asking what router you had

this

Diamondback

@chrishamm PC is connected to router via Ethernet, yes. When the issue starts appearing again I will try the things you mentioned.
Thanks for the help

oc_geek

@droftarts said in Mini 5+ Wifi connection unstable:
@chrishamm

A wireshark trace will help, because it will show which end is causing the disconnections, and give us somewhere to start investigating

Something like this when the event occurs is what you are looking for ?
(had to rename the file cse does not allow to upload otherwise, just remove .gcode extension....)

WS Capture test

tomasf

I've always had unstable Wi-Fi with Duet, ever since my first Duet Wifi, regardless of where I put the printer relative to the router and with different channels, router brands, etc. Then I switched to using an SBC and let the Raspberry Pi handle the Wi-Fi connection and it's been rock solid ever since.

oc_geek

@tomasf yeah which again pinpoints the issue... i only though too late that i shall have opted for the ETH variant and use an access point with GE port...and issue solved.

chrishamm

@oc_geek Thanks for the Wireshark dump but it looks good, I cannot see any connection drops between your PC and the Duet in there. No timeouts, no resets, nothing.

How do you connect to your Duet, do you enter <hostname>.local or just <hostname> in your browser? If it's one of these two, please connect via the IPv4 address instead and check if that improves things. You can send M552 over DWC to get it.

oc_geek

@chrishamm said in Mini 5+ Wifi connection unstable:

@oc_geek Thanks for the Wireshark dump but it looks good, I cannot see any connection drops between your PC and the Duet in there. No timeouts, no resets, nothing.

How do you connect to your Duet, do you enter <hostname>.local or just <hostname> in your browser? If it's one of these two, please connect via the IPv4 address instead and check if that improves things. You can send M552 over DWC to get it.

Yeah you see nothing because as i wrote that was a sample example.... taken when the issue wasn't there

Connecting via IP or hostname has zero influence whatsoever

oc_geek

@dc42 said in Mini 5+ Wifi connection unstable:

have you tried going to Settings/Machine specific/General in DWC and increasing "Number of maximum AJAX retries" above its default value of 2 ?

I've set it to 4 yesterday
so far it seems to hold ; after the night print in the morning i've not found disconnects/reconnects yet... (touching wood)
I'll let you know if the issue comes up again
Thanks for the advice

Michael Hathaway

Not to state the obvious, but why not just run a Mini 5+ ethernet board? Just add a access point or wireless router to the network and you will have wireless control without the dropouts. I run my printers from both PC and my phone/tablet.

chrishamm

@tinken Either way there should be no connection issues. But since we cannot reproduce them on our own, we will need valid Wireshark captures from affected users where drop-outs can be seen before we can start further investigations.

dc42

If it mainly happens overnight, it could be related to the PC going to sleep.

Michael Hathaway

Sounds like powersaving mode is active on the PC or other gui device.

stuartofmt

This post is deleted!

stuartofmt

Throwing this out there as I have wrestled with similar symptoms (but in a different context not related to Duet). It was a real struggle to pin down (until it was). Please just take this as a "check the box" comment:

Is your router / modem on a scheduled reboot (at night?) ?
Does your router provide dynamic channel selection between reboots ?