echo on > /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:00.0/power/control echo on > /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:00.1/power/control echo on > /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:00.2/power/control echo on > /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:00.3/power/control solves the problem. This should be "on" by default instead of "auto". Regards, Renne