Problemas de Bluetooth após a atualização para o Linux Mint 17.3

Question

Eu recentemente atualizei para o LinuxMint 17.3 do 17.1 e o bluetooth parece não funcionar corretamente. Quando tento procurar dispositivos para emparelhar, meu uso da CPU chega a 100% e meu PC Notebook HP congela por algum tempo, mesmo depois de sair do gerenciador de bluetooth. Funcionou bem em 17.1 e ainda funciona bem no Windows 10 (Dual Booting). Eu também tenho menos de um ano no Linux, ainda me atualizando com algumas coisas. Gentilmente ajudar.

Saída de dmesg | grep -i bluetooth :

[   22.430548] Bluetooth: Core ver 2.20
[   22.430568] Bluetooth: HCI device and connection manager initialized
[   22.430572] Bluetooth: HCI socket layer initialized
[   22.430575] Bluetooth: L2CAP socket layer initialized
[   22.430580] Bluetooth: SCO socket layer initialized
[   22.434196] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   22.434199] Bluetooth: BNEP filters: protocol multicast
[   22.434203] Bluetooth: BNEP socket layer initialized
[   22.435540] Bluetooth: RFCOMM TTY layer initialized
[   22.435547] Bluetooth: RFCOMM socket layer initialized
[   22.435551] Bluetooth: RFCOMM ver 1.11  

Saída de rfkill list bluetooth :

1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no  

Saída de sudo hciconfig -a :

hci0:   Type: BR/EDR  Bus: USB
BD Address: 48:D2:24:10:EA:B1  ACL MTU: 1022:8  SCO MTU: 183:5
DOWN 
RX bytes:564 acl:0 sco:0 events:29 errors:0
TX bytes:358 acl:0 sco:0 commands:29 errors:0
Features: 0xff 0xfe 0x0d 0xfe 0xd8 0x7f 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
Link policy: RSWITCH HOLD SNIFF 
Link mode: SLAVE ACCEPT  

+++++++ UPDATE +++++++
Saída de lsusb :

Bus 002 Device 003: ID 0bda:58de Realtek Semiconductor Corp. 
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0cf3:3121 Atheros Communications, Inc. 
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Saída de dmesg | grep -i firmware :

[    0.144120] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored  

Saída de dmesg | grep -i firmware :

[    0.144120] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored  

Saída de modinfo ath3k | grep -i 0cf3 :

alias:          usb:v0CF3pE006d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3pE005d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3pE004d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3pE003d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p817Ad*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p3121d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p311Fd*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p311Ed*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p311Dd*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p3008d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p3004d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p0036d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3pE019d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p3002d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0CF3p3000d*dc*dsc*dp*ic*isc*ip*in*  

Saída para lsmod | grep bluetooth :

bluetooth             491520  23 bnep,ath3k,btusb,rfcomm  

Saída para uname -a :

Linux arden-PC 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:41:40 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux 

Saída para ls /lib/firmware/ar3k/ :

AthrBT_0x01020001.dfu  AthrBT_0x11020000.dfu  ramps_0x01020001_26.dfu  ramps_0x01020201_26.dfu  ramps_0x31010000_40.dfu
AthrBT_0x01020200.dfu  AthrBT_0x31010000.dfu  ramps_0x01020200_26.dfu  ramps_0x01020201_40.dfu  ramps_0x41020000_40.dfu
AthrBT_0x01020201.dfu  AthrBT_0x41020000.dfu  ramps_0x01020200_40.dfu  ramps_0x11020000_40.dfu