I see the i217 on board NICs are highly problematic for a lot of people and I've tried the fixes listed - basically updating the driver (to 3.8.7, the latest as of this date) date and setting pcie_aspm=off and rebooting.

The card will not take DHCP, not a huge problem, but it also won't take a fixed address. ifconfig returns

eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet6 fe80::3bc8:75fd:5185:caaf  prefixlen 64  scopeid 0x20<link>

        ether 50:65:f3:39:5b:03  txqueuelen 1000  (Ethernet)

        RX packets 18805  bytes 1537159 (1.5 MB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 476  bytes 114536 (114.5 KB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 20  memory 0xef100000-ef120000  

sudo modprobe -r e1000e && sudo modprobe e1000e followed by sudo update-initramfs -u with a fixed address (.17) yields

eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.100.17  netmask 255.255.255.0  broadcast 192.168.100.255

        inet6 fe80::3bc8:75fd:5185:caaf  prefixlen 64  scopeid 0x20<link>

but pinging the gateway still fails:

ping 192.168.100.11

PING 192.168.100.11 (192.168.100.11) 56(84) bytes of data.

From 192.168.100.17 icmp_seq=1 Destination Host Unreachable

From 192.168.100.17 icmp_seq=2 Destination Host Unreachable

From 192.168.100.17 icmp_seq=3 Destination Host Unreachable

From 192.168.100.17 icmp_seq=4 Destination Host Unreachable

(that address is also unreachable/inpingable from other machines on the same LAN segment.)

Note that the NIC works fine under windows 7 (dual boot) and Ubuntu has no trouble with my cheezy USB wifi interface.

I've ordered a cheap Realtek RTL8111H based PCIe NIC but to where I am it is at least 2 weeks away. Wifi works, as noted, but I'm trying to do some video work and the long latency 30-50mbps shared wifi link is pretty painful compared to gigabit copper. Plus Synergy sucks over wifi.

If anyone has any clues, I'd be grateful. The essential bits are:

$ uname -a

Linux dg-dl 5.8.0-34-generic #37~20.04.2-Ubuntu SMP Thu Dec 17 14:53:00 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux



$ sudo lshw -c network

  *-network                 

       description: Ethernet interface

       product: Ethernet Connection I217-LM

       vendor: Intel Corporation

       physical id: 19

       bus info: pci@0000:00:19.0

       logical name: eno1

       version: 05

       serial: 50:65:f3:39:5b:03

       size: 1Gbit/s

       capacity: 1Gbit/s

       width: 32 bits

       clock: 33MHz

       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.8.7-NAPI duplex=full firmware=0.13-4 ip=192.168.100.17 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s

       resources: irq:26 memory:ef100000-ef11ffff memory:ef139000-ef139fff ioport:f040(size=32)

  *-network

       description: Wireless interface

       physical id: 3

       bus info: usb@3:1

       logical name: wlxaca2131ef18e

       serial: ac:a2:13:1e:f1:8e

       capabilities: ethernet physical wireless

       configuration: broadcast=yes driver=mt7601u driverversion=5.8.0-34-generic firmware=N/A ip=192.168.100.47 link=yes multicast=yes wireless=IEEE 802.11



$ modinfo e1000e | grep version

version:        3.8.7-NAPI

srcversion:     035BD57B8D93A45D1668FCC





$ lspci -nnk | grep 0200 -A3

00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I217-LM [8086:153a] (rev 05)

    DeviceName:  Onboard LAN

    Subsystem: Hewlett-Packard Company Ethernet Connection I217-LM [103c:1906]

    Kernel driver in use: e1000e



$ dmesg | grep e1000e

[16807.605025] e1000e: Intel(R) PRO/1000 Network Driver - 3.8.7-NAPI

[16807.605026] e1000e: Copyright(c) 1999 - 2020 Intel Corporation.

[16807.605193] e1000e 0000:00:19.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode

[16807.697918] e1000e 0000:00:19.0 0000:00:19.0 (uninitialized): registered PHC clock

[16807.770728] e1000e 0000:00:19.0 eth0: (PCI Express:2.5GT/s:Width x1) 50:65:f3:39:5b:03

[16807.770731] e1000e 0000:00:19.0 eth0: Intel(R) PRO/1000 Network Connection

[16807.770756] e1000e 0000:00:19.0 eth0: MAC: 11, PHY: 12, PBA No: FFFFFF-0FF

[16807.773042] e1000e 0000:00:19.0 eno1: renamed from eth0

[16813.146515] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx