Created attachment 286091 [details] btmon trace Hello, I own a bluetooth USB adapter that fails to initialize. The other bugs I saw deal with other device, hence this new one. $ sudo hciconfig hci0: Type: Primary Bus: USB BD Address: 00:1A:7D:DA:XX:XX ACL MTU: 679:9 SCO MTU: 48:16 DOWN RX bytes:1722 acl:0 sco:0 events:90 errors:0 TX bytes:1104 acl:0 sco:0 commands:90 errors:0 $ sudo hciconfig hci0 up Can't init device hci0: Operation not supported (95) The device is the following one (full lsusb output attached as file) Bus 001 Device 008: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 224 Wireless bDeviceSubClass 1 Radio Frequency bDeviceProtocol 1 Bluetooth bMaxPacketSize0 64 idVendor 0x0a12 Cambridge Silicon Radio, Ltd idProduct 0x0001 Bluetooth Dongle (HCI mode) bcdDevice 88.91 iManufacturer 0 iProduct 2 iSerial 0 I attach a btmon trace that seems to indicate that the "Delete Stored Link Key" is not supported. Is there a way to support this device in degraded mode in case the feature is not supported ? Cheers
Created attachment 286093 [details] lsusb output
lsusb output Bus 001 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) It also doesn't work with the kernel of AVLinux (Debian + Ubuntu) uname -a Linux ***** 5.4.28avl2-lowlatency #22 SMP PREEMPT Fri Apr 3 05:54:55 EDT 2020 x86_64 GNU/Linux
(In reply to sisisisol from comment #2) > lsusb output > > Bus 001 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth > Dongle (HCI mode) > > It also doesn't work with the kernel of AVLinux (Debian + Ubuntu) > > uname -a > > Linux ***** 5.4.28avl2-lowlatency #22 SMP PREEMPT Fri Apr 3 05:54:55 EDT > 2020 x86_64 GNU/Linux I forgot to mention is USB to Bluetooth Version 5.0