● rtl8723bsbt.service - RTL8723BS Bluetooth daemon
   Loaded: loaded (/lib/systemd/system/rtl8723bsbt.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Fri 2018-02-02 14:02:09 GMT; 6min ago
  Process: 774 ExecStart=/usr/sbin/rtk_hciattach -n -s 115200 ttyS4 rtk_h5 (code=exited, status=1/FAILURE)
  Process: 741 ExecStartPre=/bin/bash -c grep -qm 1 r8723bs /proc/modules (code=exited, status=0/SUCCESS)
 Main PID: 774 (code=exited, status=1/FAILURE)

Feb 02 14:02:08 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth :3-wire sync pattern resend : 35, len: 8
Feb 02 14:02:08 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth :3-wire sync pattern resend : 36, len: 8
Feb 02 14:02:08 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth :3-wire sync pattern resend : 37, len: 8
Feb 02 14:02:09 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth :3-wire sync pattern resend : 38, len: 8
Feb 02 14:02:09 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth :3-wire sync pattern resend : 39, len: 8
Feb 02 14:02:09 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth :3-wire sync pattern resend : 40, len: 8
Feb 02 14:02:09 Click-Mini-L9W-B rtk_hciattach[774]: Realtek Bluetooth ERROR: H5 sync timed out
Feb 02 14:02:09 Click-Mini-L9W-B systemd[1]: rtl8723bsbt.service: Main process exited, code=exited, status=1/FAILURE
Feb 02 14:02:09 Click-Mini-L9W-B systemd[1]: rtl8723bsbt.service: Unit entered failed state.
Feb 02 14:02:09 Click-Mini-L9W-B systemd[1]: rtl8723bsbt.service: Failed with result 'exit-code'.