LAN getting up and down constantly

#1

Hi. I’m using X4 for some time with Home Assistant on it and it’s really working great! For the moment I’m using Wi-Fi as a means for network. I want to switch to LAN though, with PoE as a power. Yesterday I tried that but connecting it made connection very unstable: it constantly was switching up and down:

2024-11-21 17:15:33.796 homeassistant kernel: igc 0000:02:00.0 enp2s0: NIC Link is Down
2024-11-21 17:15:37.458 homeassistant kernel: igc 0000:02:00.0 enp2s0: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX
2024-11-21 17:15:37.460 homeassistant NetworkManager[415]: <info>  [1732209337.4595] device (enp2s0): carrier: link connected
2024-11-21 17:15:45.759 homeassistant kernel: igc 0000:02:00.0 enp2s0: NIC Link is Down
2024-11-21 17:15:49.427 homeassistant kernel: igc 0000:02:00.0 enp2s0: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX
2024-11-21 17:15:49.429 homeassistant NetworkManager[415]: <info>  [1732209349.4284] device (enp2s0): carrier: link connected
2024-11-21 17:15:49.867 homeassistant kernel: igc 0000:02:00.0 enp2s0: NIC Link is Down

There was also few instances of:

2024-11-21 18:52:21.926 homeassistant NetworkManager[416]: <info>  [1732215141.9263] device (enp2s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
2024-11-21 18:52:21.946 homeassistant systemd[1]: Starting Network Manager Script Dispatcher Service...
2024-11-21 18:52:21.957 homeassistant systemd[1]: Started Network Manager Script Dispatcher Service.
2024-11-21 18:52:21.958 homeassistant NetworkManager[416]: <info>  [1732215141.9585] device (enp2s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
2024-11-21 18:52:21.958 homeassistant NetworkManager[416]: <info>  [1732215141.9588] device (enp2s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
2024-11-21 18:52:21.959 homeassistant NetworkManager[416]: <info>  [1732215141.9596] device (enp2s0): Activation: successful, device activated.

I’m waiting for new cable (to eliminate it as a culprit) to test X4 booted from Manjaro Live USB with PoE and without it, but I thought I’m gonna ask anyway because maybe that’s known issue of the device or I255 chip…or something.
Power works properly, no interrupts there.

#2

Well…and it looks like the cable was the culprit after all. Maybe it was too old and simply has worn in time (even though it does work). Or maybe quality was to low to handle 2.5GB and PoE? Or the connector on the cable.
For now I’ve manage to setup HA with both WiFi and LAN, with latter being the main one (with domain), and will look how it behave.

#3

Hello, is it working properly after changing the network cable?
There have been reports of network connection issues on the Intel i225 at google. You can try to improve heat dissipation of the network chip. If the problem persists, you can try to update the network firmware(NVM).