Hi there I am in trouble when using newer kernels than 5.4.x regarding Realtek NIC r8169
Kernel 5.9.2-050902-lowlatency (from https://kernel.ubuntu.com/~kernel-ppa/mainline/ and also compiled from kernel.org) Generic FE-GE Realtek PHY r8169-101:00: Downshift occurred from negotiated speed 1Gbps to actual speed 100Mbps, check cabling! r8169 0000:01:00.1 enp1s0f1: Link is Up - 100Mbps/Full (downshifted) - flow control rx/tx Kernel 5.4.73-050473-lowlatency (from https://kernel.ubuntu.com/~kernel-ppa/mainline/) IPv6: ADDRCONF(NETDEV_CHANGE): enp1s0f1: link becomes ready r8169 0000:01:00.1 enp1s0f1: Link is Up - 1Gbps/Full - flow control rx/tx Cable is ok! I double check it.... --- Gilberto Nunes Ferreira
