Do you see the issue on latest mainline kernel [0]? If it still happen to mainline kernel, then find the first bad -rc kernel so we can start a kernel bisection.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18-rc4/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1771749 Title: Ethernet connection lost after few minutes since starting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs