Wake on Lan: Router Problem
One of these should probably solve the problem. Only do one at a time, then retest.
- r8168-dkms
Try replacing the r8169 driver with this driver...
sudo apt update
sudo apt install dkms r8168-dkms
reboot
- WOL
Open terminal
nm-connection-editor
Check these settings...
- MSI
MSI/MSIX interrupts were enabled for certain ethernet cards in Ubuntu 20.xx. This can cause intermittent ethernet operation. Here's a patch to fix it. Follow the embedded instructions to install.
#!/bin/sh
# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1779817
# filename: r8169_disable_msi
# Drop it in /etc/initramfs-tools/scripts/init-top and chmod a+x it. Add 'r8169_disable_msi'
# to your kernel command line (/etc/default/grub, GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
# usually.)
# sudo -H gedit /etc/default/grub # to edit the file
# Remember to update-initramfs and update-grub as necessary.
# sudo update-initramfs -c -k $(uname -r)
# sudo update-grub
# reboot
# For the moment it disables MSI on everything with the ID 0x10ec:0x8168, as there seems to
# be no way to get the MAC version from userspace - and certainly not before the driver is
# loaded. Other PCI IDs may need adding..
PREREQ=""
prereqs()
{
echo "$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