After doing hibernation "trick" iperf3 is working fine every time.
** Attachment added: "iperf3 after hibernation" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1931442/+attachment/5506722/+files/iperf_after_hibernation -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1931442 Title: Fujitsu U7311 I219-LM wired onboard slow RX speeds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1931442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs