The 5VSB remains affected by whatever actions I take.
The 5VSB remains affected by whatever actions I take.
You're facing an issue where the system shuts down or sleeps without the +5VSB LED staying on, even though WoL is enabled in BIOS and Ubuntu reports it should work. The problem seems to be related to the Ethernet port not receiving power properly. Since the BIOS already shows WoL as active, the issue likely lies in how the port is powered or recognized by the system. Try checking the physical connection of the Ethernet cable, ensuring it's securely plugged in and that the port is correctly identified by the BIOS. Also, verify that the power settings for the port are set correctly—sometimes enabling WoL doesn't automatically fix underlying power issues. If the problem persists, consider testing with a different cable or port to rule out hardware faults.
It might be a BIOS issue. Have you tried the latest update? Or an older one? You can also test with a multimeter to see if the +5VSB line actually drops to zero volts. If it does, you'll need a power supply that meets the requirements; your configuration must still get voltage from the PSU. Good luck!