wireless connection sometimes stopped working with new ISP

**monkeybrain20122** · August 28th, 2020

Hi,

I am sharing internet with my neighbours via wifi, since about two weeks ago they changed the internet provider and I am experiencing some sporadic disconnection. The wifi is still connected according to network manager but I can't go to any website (on Firefox it says site not found) The quick fix would be to disconnect (from network manager) and then reconnect and it works again. It doesn't happen very often but it is still annoying.

It never happened before with the previous provider. Also it only happens on this laptop (ubuntu 20.04), I have another two: one with Ubuntu 16.04 and another with Kubuntu 20.04 and this doesn't happen.

Here is the output from the wireless-info scripts.

Thanks.

**praseodym** · August 29th, 2020

Lets try

Code:

sudo iwconfig wlp2s0 power off
sudo sed -i "s/wifi.powersave = 3/wifi.powersave = 2/g" /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
sudo systemctl restart network-manager.service

Also try channel 1 instead of 6

**monkeybrain20122** · August 31st, 2020

Hi, thanks.

But the laptop is plugged into an AC outlet so I don't think power management is the issue.

**monkeybrain20122** · September 1st, 2020

These are the error message when it stops from dmesg | tail

Code:

[60181.243168] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.345650] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.448153] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.550809] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.653061] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.755415] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.858098] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60181.959729] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60182.062665] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring
[60182.165011] wlp2s0: cannot understand ECSA IE operating class, 11, ignoring

**monkeybrain20122** · September 6th, 2020

bump

**monkeybrain20122** · September 12th, 2020

I disabled ipv6 and apparently it works, for one week I haven't lost connection. Is there any side effect to that?

**Frogs Hair** · September 12th, 2020

I've not seen any problems from disabling ipv6 and doing so solved the same problem for me.

**monkeybrain20122** · September 13th, 2020

Too soon, it just happens again.

**monkeybrain20122** · September 22nd, 2020

These disconnections happen sporadically, sometimes it work for days with no issues, sometimes it disconnects (but networkmanager always shows connected) several times a day and disable and then enable wifi always works.

so far I have disabled ipv6, set power save to 2 and tried the solution of post #5 here, still disconnecting from time to time. This never happened until they changed the ISP.