I believe I've identified the root-cause:
$ hciconfig hci1 features
hci1: Type: BR/EDR Bus: USB
BD Address: 00:10:7A:4D:15:33 ACL MTU: 672:8 SCO MTU: 255:255
Features: 0xff 0xfb 0x01 0x00 0x00 0x00 0x00 0x00
<3-slot packets> <5-slot packets> <encryption> <slot offset>
<timing accuracy> <role switch> <hold mode> <sniff mode>
<park state> <RSSI> <SCO link> <HV2 packets> <HV3 packets>
<u-law log> <A-law log> <CVSD>
$ hciconfig hci1 commands
Can't read support commands on hci1: Input/output error (5)
I enabled dynamic_debug to get the BT_DBG() output:
echo 'file drivers/bluetooth/* +p' | sudo tee
/sys/kernel/debug/dynamic_debug/control
echo 'file net/bluetooth/* +p' | sudo tee
/sys/kernel/debug/dynamic_debug/control
The attached extract is from the kernel log when connecting the external
USB Bluetooth device.
** Attachment added: "kern.log with captured BT_DBG() a.k.a. pr_debug()"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1491988/+attachment/4460097/+files/kern.log
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/1491988
Title:
15.10: Multiple Bluetooth controllers not found
Status in bluez package in Ubuntu:
In Progress
Status in linux package in Ubuntu:
In Progress
Bug description:
$ hcitool dev
Devices:
hci1 00:10:7A:4D:15:33
hci0 00:1F:3A:E0:0A:AF
$ hcitool -i hci1 scan
Scanning ...
00:0A:95:4B:BD:C2 Apple Wireless Keyboard
$ sudo systemctl restart bluetooth
$ journalctl -u bluetooth | grep adapter_service_add
Sep 03 19:39:12 hephaestion.lan.iam.tj bluetoothd[3973]:
src/adapter.c:adapter_service_add() /org/bluez/hci0
$ bluetoothctl
[NEW] Controller 00:1F:3A:E0:0A:AF hephaestion.lan.iam.tj [default]
[NEW] Device 00:0A:95:4B:BD:C2 Apple Wireless Keyboard
[NEW] Device 00:07:61:3B:86:98 Bluetooth Travel Mouse
[NEW] Device 00:19:15:29:83:14 Think Outside Keyboard
[bluetooth]# list
Controller 00:1F:3A:E0:0A:AF hephaestion.lan.iam.tj [default]
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1491988/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
