Am 18.11.2011 17:21, schrieb Johan Hedberg:
Hi Michael,
On Fri, Nov 18, 2011, Michael Schmitt wrote:
< HCI Command: Read Local Version Information (0x04|0x0001) plen 0
HCI Event: Command Complete (0x0e) plen 12
Read Local Version Information (0x04|0x0001) ncmd 1
status 0x00
HCI Version: 1.2 (0x2) HCI Revision: 0x2006
LMP Version: 1.2 (0x2) LMP Subversion: 0x1806
Manufacturer: AVM Berlin (31)
Ok, so this is a 1.2 adapter.
< HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0
HCI Event: Command Status (0x0f) plen 4
Read Local Supported Commands (0x04|0x0002) status 0x01 ncmd 1
Error: Unknown HCI Command
This is the reason why you're getting a timeout. Since the adapter
claims to support Bluetooth version 1.2 it should also support this HCI
command, so from that perspective it's not conforming to the
specification. Right now the kernel (lib/bluetooth/hci_event.c) is
completely missing a command status handler for this command. If such a
handler was in place instead of a timeout you would be getting an
immediate error (the kernel maps this HCI status code to EBADRQC).
However, since this is also not acceptable behavior (as the adapter
still wouldn't work for you) I suspect the need for some
adapter-specific quirk is in place or then the kernel should just ignore
any errors for HCI_Read_Local_Supported_Commands.
Johan
Thanks for the input. But do you know why the device works with older
kernel / userland? As Debian stable may be old, but not THAT old ;)
(bluetooth 1.2 was released somewhere around 2005 I think).
So, and what do we do from here on? Btw. I did mix up the two bt-sticks
I have so the last info was from the wrong stick. Here is the right info
but it looks almost the same (at least the version numbers...):
mschmitt@sogo:~$ /usr/sbin/hciconfig -a
hci0: Type: BR/EDR Bus: USB
BD Address: 00:04:0E:8C:E2:93 ACL MTU: 120:20 SCO MTU: 24:5
UP RUNNING PSCAN ISCAN
RX bytes:695 acl:0 sco:0 events:23 errors:0
TX bytes:97 acl:0 sco:0 commands:23 errors:0
Features: 0xff 0xff 0x05 0x00 0x18 0x18 0x00 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy:
Link mode: SLAVE ACCEPT
Name: ''
Class: 0x4a0000
Service Classes: Networking, Capturing, Telephony
Device Class: Miscellaneous,
HCI Version: 1.2 (0x2) Revision: 0x2006
LMP Version: 1.2 (0x2) Subversion: 0x1806
Manufacturer: AVM Berlin (31)
greetings
Michael
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