O driver aparece carregado, mas o Bluetooth não funciona no laptop CentOS 7

Question

[wayne@localhost log]$ grep -i iwlwifi dmesg
[    4.154450] iwlwifi 0000:3b:00.0: enabling device (0000 -> 0002)
[    4.156025] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-29.ucode failed with error -2
[    4.156055] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-28.ucode failed with error -2
[    4.156066] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-27.ucode failed with error -2
[    4.156077] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-26.ucode failed with error -2
[    4.156090] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-25.ucode failed with error -2
[    4.156104] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-24.ucode failed with error -2
[    4.156118] iwlwifi 0000:3b:00.0: Direct firmware load for iwlwifi-3168-23.ucode failed with error -2
[    4.160700] iwlwifi 0000:3b:00.0: loaded firmware version 22.361476.0 op_mode iwlmvm
[    4.179423] iwlwifi 0000:3b:00.0: Detected Intel(R) Dual Band Wireless AC 3168, REV=0x220
[    4.181167] iwlwifi 0000:3b:00.0: L1 Enabled - LTR Disabled
[    4.181358] iwlwifi 0000:3b:00.0: L1 Enabled - LTR Disabled
[    4.232977] iwlwifi 0000:3b:00.0 wlp59s0: renamed from wlan0

Parece que a versão 22 do driver está carregada. Wi-Fi está funcionando, mas o Bluetooth não é. Eu recebo uma mensagem "Nenhum adaptador encontrado" no BlueDevil.

Além disso, nenhum desses comandos me dá qualquer saída:

[root@localhost log]# lsusb -v | grep AC.3168
[root@localhost log]# lsusb -v | grep 3168
[root@localhost log]# lspci -v | grep 3168

Além disso:

[root@localhost log]# sudo bluetoothctl list
Waiting to connect to bluetoothd...

Eu recebo a mensagem em espera indefinidamente, apesar de ativar e iniciar o bluetooth a partir da linha de comando.

E a última coisa confusa, eu comprei também o dongle usb, e não consigo modprobe btusb.

[root@localhost log]# sudo modprobe btusb
modprobe: ERROR: could not insert 'btusb': Unknown symbol in module, or unknown parameter (see dmesg)

-modprobe não funciona

[wayne@localhost $ sudo modprobe -v btusb 
[sudo] password for wayne: 
install /bin/true 
insmod /lib/modules/3.10.0514.26.2.el7.x86_64
/kernel/drivers/bluet‌ooth/btintel.ko 
modprobe: ERROR: could not insert 'btusb': Unknown symbol in module, or unknown parameter (see dmesg) 
[wayne@localhost $ sestatus 
SELinux status: disabled

-3168 cartão não encontrado com lsusb ou lspci, mas o dongle é encontrado.

[wayne@localhost SparkScala]$ lsusb 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub 
Bus 001 Device 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) Bus 001 Device 003: ID 8087:0aa7 Intel Corp. 
Bus 001 Device 002: ID 5986:1111 Acer, Inc 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub