Thanks. Could you try to re-probe the PCI device? e.g. echo 1 > /devices/pci0000:00/0000:00:01.2/0000:02:00.0/0000:03:04.0/0000:06:00.1/remove echo 1 > devices/pci0000:00/0000:00:01.2/0000:02:00.0/0000:03:04.0/rescan Often it's something wrongly powered at a fresh boot and the forcible rescan helps.