我的机器就使用的是蓝牙4。0，RTL系列
以下就相关命令的结果
hciconfig -a
hci0: Type: BR/EDR Bus: USB
BD Address: 48:D2:24:94:17:DD ACL MTU: 820:8 SCO MTU: 255:16
UP RUNNING PSCAN ISCAN INQUIRY
RX bytes:5800 acl:0 sco:0 events:947 errors:0
TX bytes:6999 acl:0 sco:0 commands:770 errors:0
Features: 0xff 0xff 0xff 0xfe 0xdb 0xff 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: SLAVE ACCEPT
Name: 'mint-0'
Class: 0x7c0100
Service Classes: Rendering, Capturing, Object Transfer, Audio, Telephony
Device Class: Computer, Uncategorized
HCI Version: 4.0 (0x6) Revision: 0xb
LMP Version: 4.0 (0x6) Subversion: 0x8723
Manufacturer: Realtek Semiconductor Corporat

sudo service bluetooth start
start: Job is already running: bluetooth

sudo hciconfig hci0 up // 这个也执行了
现在是无法扫描到设备，有没有大师知道这是为什么？

这里说是驱动问题 https://github.com/lwfinger/rtlwifi_new ... t-68659458