Hi Caio,
> The ASUS TUF Gaming FX505DV_FX505DV laptop contains a Realtek RTL8822CE device.
>
> lsusb output with relevant ID.
> Bus 003 Device 002: ID 13d3:3548 IMC Networks Bluetooth Radio
>
> The /sys/kernel/debug/usb/devices portion for this device is:
>
> T: Bus=03 Lev=01 Prnt=01 Port=03 Cnt=02 Dev#= 2 Spd=12 MxCh= 0
> D: Ver= 1.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
> P: Vendor=13d3 ProdID=3548 Rev= 0.00
> S: Manufacturer=Realtek
> S: Product=Bluetooth Radio
> S: SerialNumber=00e04c000001
> C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=500mA
> I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
> E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
> E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
> I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
> I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
> I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
> I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
> I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
> I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
>
> The device was able to scan just some of the Bluetooth devices in
> pairing mode while using Linux kernel 5.4.0-9-generic. Dualshock 4
> wasn't being identified for instance.
>
> So, I've added the following line (#389) inside the blacklist_table[]
> block to linux-5.4.6/drivers/bluetooth/btusb.c
> { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
>
> built it, and copied to the following directory
> make -C /lib/modules/5.4.0-9-generic/build M=$PWD modules
> sudo cp btusb.ko /lib/modules/5.4.0-9-generic/kernel/drivers/bluetooth/
>
> loaded and reloaded the relevant module.
> sudo modprobe -r btusb
> sudo modprobe btusb
>
>
> Now it is working properly.
> $ bluetoothctl devices
> Device A4:53:85:F5:04:7C Wireless Controller
please send a proper patch adding this USB ID to the table.
Regards
Marcel
