server:~# cat /proc/acpi/wakeup
Device  Sleep state     Status
PCI0       4            disabled
AGPB       4            disabled
PCIH       4            disabled
USB1       4            disabled
USB2       4            disabled
AC97       4            disabled
MC97       4            disabled
KEYB       1            disabled
PS2M       1            disabled
COM1       1            disabled
COM2       1            disabled