There are three ethernet interfaces after installing latest test kernel. But, I still can see following error message.
Error message: [ 93.198160] intel-eth-pci 0000:00:1e.4 enp0s30f4: validation of sgmii with support 0000000,00000000,00006280 and advertisement 0000000,00000000,00000000 failed: -22 [ 93.198486] intel-eth-pci 0000:00:1e.4 enp0s30f4: stmmac_open: Cannot attach to PHY (error: -22) [ 93.306178] intel-eth-pci 0000:00:1e.5 enp0s30f5: validation of sgmii with support 0000000,00000000,00006280 and advertisement 0000000,00000000,00000000 failed: -22 [ 93.306506] intel-eth-pci 0000:00:1e.5 enp0s30f5: stmmac_open: Cannot attach to PHY (error: -22) $ ip addr 2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 90:49:fa:06:99:dc brd ff:ff:ff:ff:ff:ff inet 192.168.1.113/24 brd 192.168.1.255 scope global dynamic noprefixroute enp0s31f6 valid_lft 86104sec preferred_lft 86104sec inet6 fe80::a42b:f21a:2d51:9b9c/64 scope link noprefixroute valid_lft forever preferred_lft forever 3: enp0s30f4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 88:ab:cd:11:01:23 brd ff:ff:ff:ff:ff:ff 4: enp0s30f5: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 3e:3a:cd:56:3b:f6 brd ff:ff:ff:ff:ff:ff $ uname -a Linux tgl-h 5.11.0-1012-intel #14+tsn01 SMP Wed Aug 11 18:40:44 CST 2021 x86_64 x86_64 x86_64 GNU/Linux ** Attachment added: "dmesg.log" https://bugs.launchpad.net/intel/+bug/1936903/+attachment/5520704/+files/dmesg.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936903 Title: CDTS Network (Ethernet) failures To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1936903/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs