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Nikita

My #TPLink router has been having weird problems, and I don't really know how to debug it. About once a day, my devices lose connection to Wi-Fi. The Ethernet connection still works, though. The devices claim the Wi-Fi has no Internet connection, has a wrong password, or plainly hide it from the networks list.

A restart helps, but not always. Full reset did not help. DoS protection is on, and logs are empty on both my #RaspberryPi and the router itself. What could it be?

21 Aug 2023 at 18:12 | Open on fosstodon.org
7 comments
KeyboardWarrior

@kytta You might try looking in logs inside the modem, if you can get in the modem and it has logs. I discovered that my cable internet connection from my ISP was incorrectly attenuated by an F cap on the end of an exposed coaxial splitter. I removed it and my internet connection stopped dropping once or twice per day like yours. Wild guess?

21 Aug 2023 at 18:49 | Open on fosstodon.org
Nikita

@blucrunch I don't have coax, but DSL, and I don't think it's the issue, since the connection still works over the Ethernet. But thanks for the guess!

21 Aug 2023 at 19:54 | Open on fosstodon.org
KeyboardWarrior

@kytta Oh I see, I misread. Have you tried changing the channel the WiFi is broadcast on? I'm not sure if you have close neighbors with WiFi in their homes as well but if many are on the same channel they could be interfering.

21 Aug 2023 at 20:03 | Open on fosstodon.org
Tom

@kytta I had the same sort of problem with a TPLink VR400 - although in my case a proper power cycle always brought it back.
Nothing in the logs, no obvious network traffic. DSL still worked, but only to/from Ethernet. Ended up writing it off as dodgy hardware.
Hope you have better luck!

21 Aug 2023 at 19:30 | Open on fosstodon.org
Nikita

@tswsl huh, I have an Archer VR too, but the 600 model. The power cycle does bring it back, yes, but sometimes it goes away almost immediately after that. I gotta investigate, this may actually be a HW/SW issue with the Archers

21 Aug 2023 at 19:53 | Open on fosstodon.org
Plumpcat

@kytta @tswsl try turning off 5ghz wifi. I have a tplink vr400 and the 5ghz wifi on it causes all sorts of connectivity issues. What's wild, and I totally don't understand why this is, but the majority of my raspberry pi's (at least 11 of them) will play nice with a freshly turned on vr400 but after about 15 mins it starts dropping and disappearing. Only if the 5ghz side is on.

As soon as I turned off the 5ghz side, everything has run just fine since. I have no idea why.

Another thing I was told that might help (but didn't help me) was to turn off WMM in the router settings. This actually increased the amount of time my pi's would initially stay connected until they inevitably disconnected anyways.

I really hate these routers, they have some really amazing settings for being first party, but they have really weird quirks, and this quirk seems to be the most frustrating overall.

Ps.

@kytta @tswsl try turning off 5ghz wifi. I have a tplink vr400 and the 5ghz wifi on it causes all sorts of connectivity issues. What's wild, and I totally don't understand why this is, but the majority of my raspberry pi's (at least 11 of them) will play nice with a freshly turned on vr400 but after about 15 mins it starts dropping and disappearing. Only if the 5ghz side is on.

23 Aug 2023 at 9:57 | Open on infosec.exchange
Philipp

@kytta If its wifi related and you have a 5Ghz wifi, maybe it gets shut off when something nearby with more priority tries do send something. I have a similar issue

avm.de/service/wissensdatenban

de.wikipedia.org/wiki/Dynamic_
22 Aug 2023 at 8:30 | Open on fosstodon.org
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