Hi, I have Lenovo laptop with an Intel wireless and Bluetooth adapter, running CentOS 6.9. The wireless works just fine, but I can't seem to get Bluetooth to work. When I try to force it up from the command line I get # hciconfig hci0 up Can't init device hci0: Invalid request code (56) There is also a similar message message in /var/log/messages from start-up on boot. The device info from "hciconfig" also seems a bit suspicious to me - notice how the address has all 0s: # hciconfig -a hci0: Type: BR/EDR Bus: USB BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0 DOWN RX bytes:48 acl:0 sco:0 events:8 errors:0 TX bytes:24 acl:0 sco:0 commands:12 errors:4 /var/log/messages indicates that firmware is loaded correctly # egrep "iwlwifi.*firmware" /var/log/messages Nov 20 09:24:16 osl-97214 kernel: iwlwifi 0000:04:00.0: firmware: requesting iwlwifi-8000C-17.ucode Nov 20 09:24:16 osl-97214 kernel: iwlwifi 0000:04:00.0: firmware: requesting iwlwifi-8000C-16.ucode Nov 20 09:24:16 osl-97214 kernel: iwlwifi 0000:04:00.0: loaded firmware version 16.242414.0 op_mode iwlmvm and I think the following shows that the device is actually there # lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 003: ID 17ef:1010 Lenovo Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bus 001 Device 005: ID 5986:0706 Acer, Inc Bus 002 Device 002: ID 17ef:1010 Lenovo Bus 001 Device 006: ID 2109:3431 VIA Labs, Inc. Hub Bus 001 Device 007: ID 17ef:100f Lenovo Bus 002 Device 003: ID 2109:8110 VIA Labs, Inc. Hub Bus 001 Device 008: ID 05e3:0610 Genesys Logic, Inc. 4-port hub # lsusb -s 001:004 -v | grep bInterface bInterfaceNumber 0 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth bInterfaceNumber 1 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth bInterfaceNumber 1 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth bInterfaceNumber 1 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth bInterfaceNumber 1 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth bInterfaceNumber 1 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth bInterfaceNumber 1 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth The bluetooth kernel modules should be loaded, too (but perhaps I need some extra driver or whatever?) # lsmod | grep bluetooth bluetooth 97799 6 sco,bnep,l2cap,btusb rfkill 19255 5 cfg80211,bluetooth,thinkpad_acpi Does anyone have any idea what's wrong here? Is there any way at all I can enable Bluetooth on this system? Thanks, - Toralf