Hello, I have a curious problem with my system: whenever I wake up the PC with a WOL magic packet and then power it off the systems comes back to life after a couple of seconds, by itself. I can reproduce the problem 100% of the times. I've been having this problems for years. I remember this same issue occurred also with my previous computer, with a different mainboard. My current system has an ASUS P8B-WS mb with a Xeon 1275v2 CPU. I've ruled out in the time many factors: traffic on the net (by disconnecting the cable), RTC alarms (by disabling them)... long story short: I'm stuck. While I'm not the only one with this issue (see[1]), some people have reported mixed success by blacklisting some components (xhci-pci) or by setting unrelated BIOS options. Unfortunately these workarounds never worked for me. So I'm here to ask if there is a way to get the source/cause of the last wakeup by setting some ACPI debug option. This way I could at least pinpoint the device/interface that caused the spontaneous wakeup and then debug further or at least disable it. I've tried to enable the ACPI hardware-related messages with the kernel arguments: acpi.debug_layer=0x2 acpi.debug_level=0xffffffff Unfortunately I can't see the information I'm looking for in the resulting output. Should I enable some other debug_layer? Could anybody point me in the right direction? Thank you and best regards, Gianluca [1] https://bbs.archlinux.org/viewtopic.php?id=173648 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
