jessie: wake-on-lan -> ok; stretch: wake-on-lan -> broken I upgraded a headless machine (with openmediavault) from jessie to stretch and after that wake-on-lan stopped working. I ran down the following checks: >ethtool eth0 ------------------- Supports Wake-on: g Wake-on: g >cat /proc/acpi/wakeup ------------------------------------------- MMAC S5 *enabled pci:0000:00:14.0 >cat /etc/default/halt --------------------- NETDOWN=no * If the machine is up, MagicPackets are received (`nc -ul -p 9`) * I also installed a _systemd_ `wol@eth0.service` with `ethtool -s eth0 wol g` but it didn't do any good **Q** What do I need to do to get the wake-on-lan back to work?

This is not an OS issue at all, because the wake-up should happen from **S5** (= power-off). Therefore, only the BIOS settings are of relevance. Since the BIOS settings have been working properly for quite a while I conclude there is a hardware-problem.

_Note1_ power-on is even instable using the power-button (I double-checked if the switch is defect, which it is not) so it has to be a hardware problem on the motherboard.