ROG STRIX X670E GAMING WIFI - Linux Ethernet Fix

Linux users may experience random ethernet outages on the Asus ROG STRIX X670E GAMING WIFI platform. Currently they are no reliable methods to prevent this in the first place. This repository aims to provide a quick fix when these outages occur, by checking every x seconds to see if an outage has occurred and then fixing it.

For more info about this topic consult the following thread:

• Network card (Intel Ethernet Controller I225-V, igc) keeps dropping after 1 hour on linux - solved with kernel param

The solution in this repo was tested successfully in Arch Linux.

Steps to resolve outages

In order to reenable ethernet we can use two commands:

echo 1 >/sys/bus/pci/devices/${pci_address}/remove
echo 1 >/sys/bus/pci/rescan

To automate we can create a timed service which runs every x seconds. For that we need to create three files:

check_ethernet.timer

sudo vim /etc/systemd/system/check_ethernet.timer

[Unit]
Description=Runs Ethernet check every 2 seconds

[Timer]
OnBootSec=30s
OnUnitActiveSec=2s
AccuracySec=1us
Unit=check_ethernet.service

[Install]
WantedBy=timers.target

check_ethernet.service

sudo vim /etc/systemd/system/check_ethernet.service

[Unit]
Description=Check for Ethernet PCIe Link Failure
After=network.target

[Service]
Type=oneshot
ExecStart=/usr/local/bin/check_and_reset_ethernet.sh

[Install]
WantedBy=multi-user.target

check_and_reset_ethernet.sh

sudo vim /usr/local/bin/check_and_reset_ethernet.sh

#!/bin/bash

# Log and timestamp files
LOG_FILE="/var/log/reset_ethernet.log"

# Function to perform PCI reset
function pci_reset {
	local pci_address=$(lspci -D | grep "Ethernet Controller I225-V (rev 03)" | awk '{print $1}')
	if [ -n "$pci_address" ]; then
		echo "$(date): Resetting Ethernet Controller at $pci_address" | tee -a "$LOG_FILE"
		echo 1 >/sys/bus/pci/devices/${pci_address}/remove
		echo 1 >/sys/bus/pci/rescan
		echo "$(date): PCI reset performed and timestamp updated." | tee -a "$LOG_FILE"
	else
		echo "$(date): Ethernet controller not found." | tee -a "$LOG_FILE"
	fi
}

# Get system uptime in seconds
system_uptime=$(awk '{print int($1)}' /proc/uptime)

# Get the latest dmesg timestamp for the specific error
latest_error_timestamp=$(dmesg | grep "igc.*: PCIe link lost, device now detached" | tail -1 | awk -F'[][ :]+*' '{split($2,a,"."); print a[1]}')

# Convert latest_error_timestamp to integer seconds
latest_error_seconds=$(echo $latest_error_timestamp | awk -F'.' '{print $1}')

# Check if there has been a disconnect
if [[ -z "$latest_error_timestamp" ]]; then
	exit 0
fi

# Compare the latest error timestamp with current uptime to see if it occurred at least 3 seconds ago
if ((system_uptime - latest_error_seconds <= 3)); then
	pci_reset
else
	exit 0
fi

Update services

To enable this service on startup run:

sudo systemctl daemon-reload
sudo systemctl enable --now check_ethernet.timer

To consult log file run:

cat /var/log/reset_ethernet.log