Hi Andrew,
> How does one go about getting a device that should work with btusb but doesn’t? It works fine with Microsoft generic bt drivers. There must be some sort of quirk.
>
> This is for a Bluetooth 5.3 transceiver. There’s not a lot of these about yet but I think important for accessing newer/upcoming audio purposes.
>
>
> From /sys/kernel/debug/usb/devices:
>
> T: Bus=02 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
> D: Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
> P: Vendor=10d7 ProdID=b012 Rev=88.91
> S: Manufacturer=Actions
> S: Product=general adapter
> S: SerialNumber=ACTIONS1234
> C:* #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr=100mA
> I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=81(I) Atr=03(Int.) MxPS= 64 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=01(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=01(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=01(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=01(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=01(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=01(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
> E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
>
>
> dmesg | grep Bluetooth
> [ 11.375035] Bluetooth: Core ver 2.22
> [ 11.375054] Bluetooth: HCI device and connection manager initialized
> [ 11.375057] Bluetooth: HCI socket layer initialized
> [ 11.375059] Bluetooth: L2CAP socket layer initialized
> [ 11.375062] Bluetooth: SCO socket layer initialized
> [ 11.450398] Bluetooth: hci0: Opcode 0x c5a failed: -56
> [ 12.455169] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
> [ 12.455173] Bluetooth: BNEP filters: protocol multicast
> [ 12.455176] Bluetooth: BNEP socket layer initialized
>
>
> This is on Linux Kernel: 6.0.8-300.fc37.aarch64
>
>
> This needs to be added to the usb.ids (I’ve tried submitting to the update robot but I don’t know if that is still alive):
>
> 10d7 Actions Semiconductor Co., Ltd
> b012 ATS2851 Bluetooth 5.3 Transceiver [Ugreen CM591]
this seems to be problem:
< HCI Command: Read Default Erroneous Data Reporting (0x03|0x005a) plen 0
> HCI Event: Command Status (0x0f) plen 4
Read Default Erroneous Data Reporting (0x03|0x005a) ncmd 1
Status: Unknown HCI Command (0x01)
The device declares support for it, but then doesn’t actually support
it.
We have a HCI_QUIRK_BROKEN_ERR_DATA_REPORTING that most likely needs
to be set for this hardware.
Regards
Marcel
