TP-Link UB500 Bluetooth adapter - missing firmware

[elephant]

FreeBSD 15.1 wasn't recognizing this nano-sized TP-Link generic BT adapter.

The USB VID and PID appears in the device list of the ng_ubt_rtl.c driver. There's also a devd rule to install the firmware.

notify 100 {
match "system" "USB";
match "subsystem" "DEVICE";
match "type" "ATTACH";
match "vendor" "0x2357";
match "product" "0x0604";
action "/usr/sbin/rtlbtfw -d $cdev -f /usr/local/share/rtlbt-firmware";
};

I tried running the devd rule's action manually in hopes of finding an error.

/usr/sbin/rtlbtfw -d $cdev -f /usr/local/share/rtlbt-firmware

I get the following error:

rtlbtfw: rtlbt_fw_read: open: /usr/local/share/rtlbt-firmware/rtl8761bu_fw.bin: No such file or directory

Uh oh. /usr/local/share suggests I'm missing a port. A quick search on freshports.net located this for Realtek chipsets (and also this for Intel chipsets and this for Broadcom chipsets).

Installed the package. Now the firmware loads. Great.

Let's see what other trouble this gets me.

 

[elephant]

This command ...
service bluetooth start ubt0
... returns an error:

/etc/rc.d/bluetooth: ERROR: Unable to setup Bluetooth stack for device ubt0

Re-running the command gives me this.

/etc/rc.d/bluetooth: WARNING: Reset failed, retrying.

I've seen an open bug describing the need to re-run the command. Moving on, I check that hcsecd is also running with ...
mdo service hcsecd status
... and see that it is ...

hcsecd is running as pid 2853.

This command ...
mdo hccontrol -n ubt0hci inquiry
... gives me this result ...

Inquiry complete. Status: No error [00]

I can't tell if this is good or bad.

This command ...
ngctl ls
... shows all of my BT related devices:

There are 8 total nodes:
Name: ngctl3338 Type: socket ID: 00000020 Num hooks: 0
Name: ubt0 Type: ubt ID: 00000001 Num hooks: 1
Name: btsock_l2c Type: btsock_l2c ID: 00000002 Num hooks: 1
Name: btsock_l2c_raw Type: btsock_l2c_raw ID: 00000003 Num hooks: 1
Name: btsock_hci_raw Type: btsock_hci_raw ID: 00000004 Num hooks: 1
Name: btsock_sco Type: btsock_sco ID: 00000005 Num hooks: 0
Name: ubt0hci Type: hci ID: 00000016 Num hooks: 3
Name: ubt0l2cap Type: l2cap ID: 0000001a Num hooks: 3

... and that's as far as I can get for now. Soliciting hints and suggestions.

 

[elephant]

A tiny bit of progress ...

bluetooth-config scan

... found a BT mouse. It failed to set up the mouse but this is a start.

Scanning for new Bluetooth devices (Attempt 1 of 5) ... done.
Found 1 new bluetooth device (now scanning for names):
[ 1] xx:xx:xx:xx:xx:xx "Bluetooth Mouse XYZ" ()

 

[elephant]

This device provides human interface device services.
Set it up? [yes]:
syntax error in line 1
Writing HID descriptor block to /etc/bluetooth/bthidd.conf ... failed.

Not sure what's going on but the BT mouse is working. Now to make sure it survives a reboot ...