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I have a strange issue about Wifi connectivity. My home has two wifi modems, F1 and F2 for each floor. My Ubuntu version was 18.04 and I want to upgrade to 20.04, but have to upgrade to 19.10 first. Then when I finally upgraded to 20.04, I cannot connect to F2 wifi, it keeps connecting but never success. Connecting to F1 works well.

All I remember is when I was at Ubuntu 19.10, I use the F2 wifi to run command for upgrading to 20.04. Hence, when I unplug the F2 wifi modem and replug, my laptop can connect to it but when I disconnect it or restart the computer, the issue persists.

If you need any information for investigation, just tell me. Thank you.

Trương Minh Triết
  • 49

2 Answers2

0

Network logs should be sent to /var/log/syslog

You can perhaps try monitoring the log using:

tail -f /var/log/syslog

Then attempting to connect again.

Optionally you can also share the log (tail -n40 /var/log/syslog) and perhaps someone can help further.

Ricky Hewitt
  • 103
-1

On router settings (go to 192.168.0.1 or your router address):

Go through the setup wizard and also changed authentication method to WPA2-PSK.

Dlink administration SCreen .

On Ubuntu 20.04:

Assume that the wireless network interface is wlp5s0.

Edit file:

sudo vim /etc/network/interfaces

Add following lines:

auto wlp5s0
iface wlan0 inet static

Save and close the file, then:

ifconfig wlp5s0 down
ifconfig wlp5s0 up
Trương Minh Triết
  • 49