Since yesterday I have a problem with my wired internet connection only on Ubuntu, Win7 works fine (dual boot), Thunderbird hangs at connected to pop3 and receives no e-mails and various websites hang at TLS handshake.: duckduckgo, ustart.org though google is there in a second.

I have already tried

  • renaming cert8.db
  • sudo nano /etc/gai.conf
  • locate #precedence ::ffff:0:0/96 100 and remove the #.
  • reboot
  • Disconnect from Internet with sudo tee /proc/sys/net/ipv6/conf/all/disable_ipv6 <<<"1" Connect to the Internet again

All without success

I do not know commands by heart but mostly try some sudo commands I find on this forum or online, as I am not an ubuntu adept. I hope someone can help, I am now on Windows7 :(

  • Since I did not find a solution I decided to install Ubuntu again but this resulted in the same problem with TLS handshake and also not being able to connect when I tried to update with terminal (waiting for headers), Software is also giving an error "unable to download firmware updates from "fwupd".So there is a problem with the network, though not on Windows 7, also resetting the modem did not solve it. – Rosarium Lane Nov 7 '18 at 15:57
  • I asked my provider to reboot my modem, something that solved the TLS handshake issue for someone else I read but it also did not help. so I still have this problem in Ubuntu. – Rosarium Lane Nov 23 '18 at 14:12
  • I actually stopped using Ubuntu after using it for 4 years, because of this issue. I hope someone will come with a solution one day. – Rosarium Lane Dec 17 '18 at 12:12

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