CONSTANT AJAX disconnect errors
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I experienced the same issue on a new Duet Wifi I received this week. I recalled that I had similar problems with some devices in the past with WMM mode enabled on the router. And indeed, disabling it fixed the issue. I have a router running OpenWrt based distribution, which allows to enable/disable WMM on per-SSID basis. I'm not sure about other routers, such as those ASUS devices mentioned here, but I think it should be at least possible to toggle WMM globally to try if it solves the problem.
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As I use an OpenWRT-based router, I'll give this a try! Thanks.
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I'm not sure about other routers, such as those ASUS devices mentioned here, but I think it should be at least possible to toggle WMM globally to try if it solves the problem.
Interesting.
One of my routers is an Asus RT-AC68P. The other is an older RT-N66R. The DuetWifi was attached to the RT-N66R. Both are running Asuswrt-Merlin 380.68_4
I notice on the Wireless section - Professional tab there is an item labeled: "Enable WMM APSD" The choices are "Enable" and "Disable" I'm not sure if they mean enabled and disabled but both routers are in the default setting, which shows "Enable."
Seeing that this setting has something to do with power saving mode and QoS, who knows - this could be related. I do not see a setting specific to just WMM.
https://routerguide.net/wmm-apsd-on-or-off/
John
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Seeing that this setting has something to do with power saving mode and QoS, who knows - this could be related. I do not see a setting specific to just WMM.
Yep, "disabling WMM" practically means "disabling WMM APSD". Even the page you've linked mentions that it can be linked to connection dropouts: "There are reported cases of mobile devices dropping connections when the WMM APSD options are turned on."
As I said, it seems that disabling it resolved the issue for me, so it's worth a try if anyone faces the problem. Probably the worst thing that can happen is that they'll have worse battery performance on their mobile devices for the time of the test.
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This article:
http://bbs.espressif.com/viewtopic.php?t=133
mentions a parameter for esp8266 to disable powersave on the chip itself, at least when in client-mode.
„You can use wifi_set_sleep_type to set sleep type for power saving and set NONE_SLEEP_T to disable power saving.“
@David: Could this be worth a try?
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I looked at this before and I think it defaults to no power saving, but I'll check.
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At least when I checked with sta_info about a week ago the module was reporting powersave capability to the AP
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turned off WMM APSD
So far 2 hours into a print. Not a definitive answer yet, but so far id say looks promising…
As I wrote this I went back and saw pink screen "ajax error" timeout, but was able to immediately reconnect with connect button.Will continue testing
Edit: disconnected 5 min later, now can't reconnect....back to square one..
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I also turned off WMM. So far, no disconnect…
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Im running a Tenda AC18 and it doesn't look like I have any WMM options, that I can find.
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I have the WMM turned off, and I continue to have the issues.
It does sound like the right path of investigation though. -
In fact, me too
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Oddly, my Duet no longer shows up under my list of connected clients in my router admin control.
Ideas?
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did you recently update your router firmware?
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did you recently update your router firmware?
No.
But I did just updated to the Wifi Server 1.20alpha1+1 and it is showing in my list of clients again.
odd.
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and…. disconnects
Wifi Server 1.20alpha1+1
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[c]8:56:21 PM Disconnected.
8:53:51 PM Connection established!
8:51:30 PM Disconnected.
8:51:08 PM WiFi module stopped
8:51:08 PM Connection established!
8:44:11 PM Disconnected.
8:43:10 PM M0 H1
Printing paused[/c]y'all, I'm losing my mind over here.
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Did the "wifi module stopped" message happen because you sent a M552 command to stop it, or spontaneously?
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Did the "wifi module stopped" message happen because you sent a M552 command to stop it, or spontaneously?
Probably b/c I sent the command to stop/start it, but honestly the disconnects were so bad and so frequent last night, I can't remember.
To even use the printer last night I was running M552 S-1/S1 pretty much any time I needed to access DWC because even if it had only be a couple of minutes it would have already disconnected.
If you have an exact set of steps you'd like me to walk through, I'm happy to try ANYTHING.
Also, even during the times that it is connected, it is not showing up as a connected client in my routers admin utility.
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If it is connected but not showing up in your router's admin page, that is a problem with your router. You may need to refresh your router's admin page.
I'll be releasing a new firmware version soon that displays the wifi module sleep mode, along with a patched wifi module that doesn't sleep at all.
