Fix RTL8111 Not working correctly in the new kernel

fix-rtl8111-not-work.md

Fix RTL8111 Not working correctly with the new kernel (Ubuntu 22.04)

https://askubuntu.com/questions/1325854/activation-of-network-connection-failed-fixes-when-reboot-from-windows

Somehow, it's work again when i try to connect the LAN on the other ethernet devices

Fix

1. Install r8168-dkms from apt with command sudo apt install dkms r8168-dkms to replace current module r8169
2. Reboot
3. If the issue still exist, then there is a chance, that this issue is from MSI/MSIX intterupt (not sure what, just a note)
4. So, to fix the issue, put the file r8169_disable_msi inside /etc/initramfs-tools/scripts/init-top/, and change the the permission with sudo chmod a+x r8169_disable_msi
5. When done, run sudo update-initramfs -c -k $(uname -r) and sudo update-grub, then reboot

r8169_disable_msi

#!/bin/sh

# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1779817
#
# Attached is a work-around for the in-kernel driver that is as unhacky as I can make it.

# filename: r8169_disable_msi

PREREQ=""
prereqs()
{
    echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
    prereqs
    exit 0
    ;;
esac

disable_msi () {
    for i in /sys/bus/pci/devices/*; do
        if [ $(cat $i/vendor) = "0x10ec" -a $(cat $i/device) = "0x8168" ]; then
            echo 0 >$i/msi_bus
        fi
    done
}

for x in $(cat /proc/cmdline); do
        case ${x} in
        r8169_disable_msi)
        disable_msi
        break
                ;;
        esac
done