Scan error Invalid HCI Command Parameters

[justinmiller62]

when attempting to scan I get a Invalid HCI Command Parameters error. However if I run bluetoothctl scan on the scanner starts working. It appears that there is some command being sent by bluetoothctl to turn on the scanner that the software is not performing.

When I use bemoan to watch what is happening when scanning with the command parameters error I see the following looping over as the app keeps trying and failing to scan.

`> HCI Event: Command Complete (0x0e) plen 4                                             [hci0] 2.144296
      LE Set Scan Enable (0x08|0x000c) ncmd 1
        Status: Invalid HCI Command Parameters (0x12)
< HCI Command: Disconnect (0x01|0x0006) plen 3                                          [hci0] 2.145767
        Handle: 0
        Reason: Connection Terminated By Local Host (0x16)

HCI Event: Command Status (0x0f) plen 4                                               [hci0] 2.146661
      Disconnect (0x01|0x0006) ncmd 1
        Status: Command Disallowed (0x0c)
`

When I watch the scanner start after using bluetoothctl scan on command I get the following.

`HCI Command: Disconnect (0x01|0x0006) plen 3                                         [hci0] 50.286713
        Handle: 0
        Reason: Connection Terminated By Local Host (0x16)

HCI Event: Command Status (0x0f) plen 4                                              [hci0] 50.287760
      Disconnect (0x01|0x0006) ncmd 1
        Status: Command Disallowed (0x0c)
@ MGMT Command: Start Discovery (0x0023) plen 1                               {0x0001} [hci0] 50.577471
        Address type: 0x07
          BR/EDR
          LE Public
          LE Random
< HCI Command: LE Set Random Address (0x08|0x0005) plen 6                              [hci0] 50.577599
        Address: 01:54:A4:10:93:EA (Non-Resolvable)
HCI Event: Command Complete (0x0e) plen 4                                            [hci0] 50.582053
      LE Set Random Address (0x08|0x0005) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7                             [hci0] 50.582150
        Type: Active (0x01)
        Interval: 11.250 msec (0x0012)
        Window: 11.250 msec (0x0012)
        Own address type: Random (0x01)
        Filter policy: Accept all advertisement (0x00)
HCI Event: Command Complete (0x0e) plen 4                                            [hci0] 50.584337
      LE Set Scan Parameters (0x08|0x000b) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2                                 [hci0] 50.584425
        Scanning: Enabled (0x01)
        Filter duplicates: Enabled (0x01)
HCI Event: Command Complete (0x0e) plen 4                                            [hci0] 50.588154
      LE Set Scan Enable (0x08|0x000c) ncmd 1
        Status: Success (0x00)
@ MGMT Event: Command Complete (0x0001) plen 4                                {0x0001} [hci0] 50.588270
      Start Discovery (0x0023) plen 1
        Status: Success (0x00)
        Address type: 0x07
          BR/EDR
          LE Public
          LE Random
@ MGMT Event: Discovering (0x0013) plen 2                                     {0x0002} [hci0] 50.588295
        Address type: 0x07
          BR/EDR
          LE Public
          LE Random
        Discovery: Enabled (0x01)
`