After doing some research I'm quite sure that this bug was introduced by [1] in the 5.4.29 mainline kernel and the 5.4.0-22.26 ubuntu kernel. The bug was already fixed by [2] in the 5.4.32 mainline kernel. At least that's the case on my machine [3] and Heiner Kallweit also pointed in this direction [4]. The only thing that doesn't fit in this picture is that adding realtek to /etc/modules fixed the problem for Ryan. But it didn't fix the problem for me.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.4.32&id=791c420f42289fe9afed9e325c6b21eb6a5a329e [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.4.32&id=3fcd53b1d859799686a08785afb8990566c31cfa [3] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873552 [4] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873512/comments/20 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871182 Title: [RTL810xE] No ethernet connection To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1871182/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
