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Today I upgraded Ubuntu to 18.04 and now I have almost no internet. When I try to open a site in firefox, I usually get error 'unable to connect'.

Oddly I can connect to some sites (google, some local news site,… ). I used to have dnsmasq instead of systemd-resolved. Now dnsmasq doesn't want to start:

> (error: "failed to create listening socket for port 53: Address already in use.")

If I disable dnsmasq and use systemd-resolved it runs, but problem is not solved. What to do?

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  • Do you only have that problem with Firefox, or also with other programs?
    – JanC
    May 2, 2018 at 19:01
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    In Network Manager it says Connected, but I don't get notification, that I'mconnected after restarting Network manager. I only use firefox.
    – Mersault
    May 2, 2018 at 19:56

1 Answer 1

Reset to default
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SOLVED: I deleted profile of my ethernet connection and new connection worked

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  • I have the similar problem, but yours not worked 4 me. Just I had discovered the problem occurred after ssh login into my server, then I could browse my website on that server only through https and so http urls not working no longer!!!
    – Khalil Laleh
    May 27, 2018 at 19:52

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