The RJ45 port LEDs are off when the system is in shutdown state

How can I verify whether the network adapter of my A8 remains powered after shutdown (S5 state) or hibernation (S4 state), so it can receive the Wake-on-LAN magic packet? I noticed the RJ45 port LEDs are off when the system(Kubuntu) is in sleep or shutdown state.

Normally, as long as the device is plugged into power, the LAN port LED should blink even when the machine is shut down. However, all LAN port LEDs are completely off in the video. This behavior is observed under Windows, while the customer is running a Linux system.

One possible cause: WOL is enabled in BIOS, but Kubuntu (Linux) fails to properly retain the network adapter’s magic-packet wake state before shutdown or suspend. Alternatively, the Linux driver may tear down the network link during the shutdown sequence.

In short:

• WOL enabled in BIOS: means the motherboard allows the network card to trigger a wake-up request.
• Operating system / network adapter driver: the NIC must also be configured to “accept Magic Packet” before shutdown.

Windows handles this step correctly. The current Linux driver or NetworkManager configuration does not, resulting in all LAN port LEDs turning off after shutdown.

For the A8, the network adapter stays powered during shutdown or hibernation as long as standby power is maintained. Our product team validates Wake-on-LAN functionality during R&D testing, but all tests are performed on Windows. WOL has not yet been verified under Linux.