Another "hci0 command tx timeout"

Another "hci0 command tx timeout"

[Sergej Pupykin]

  Hello, All.

How can I help to debug this issue? BT works without userspace, but does 
not work if I enable it in udev rules (ACTION=="add", 
SUBSYSTEM=="bluetooth", RUN+="/usr/sbin/bluetoothd --udev") or do 
"/etc/rc.d/bluetooth start".

(Probably related to
https://bugzilla.redhat.com/show_bug.cgi?id=519176
and
https://bugs.launchpad.net/linux/+bug/268502)

Packages:
kernel26 2.6.35.5-1
bluez 4.72-1

Devices:
Bus 007 Device 005: ID 0a5c:3503 Broadcom Corp.
Bus 007 Device 004: ID 0a5c:3502 Broadcom Corp.
Bus 007 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth 
Dongle (HCI mode)
Bus 007 Device 002: ID 0a5c:3500 Broadcom Corp.

Without userspace:
HCI sniffer - Bluetooth packet analyzer ver 1.42
device: hci0 snap_len: 1028 filter: 0xffffffffffffffff
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0
 > HCI Event: Command Complete (0x0e) plen 12
< HCI Command: Read Local Version Information (0x04|0x0001) plen 0
 > HCI Event: Command Complete (0x0e) plen 12
< HCI Command: Read Buffer Size (0x04|0x0005) plen 0
 > HCI Event: Command Complete (0x0e) plen 11
< HCI Command: Read BD ADDR (0x04|0x0009) plen 0
 > HCI Event: Command Complete (0x0e) plen 10
< HCI Command: Read Class of Device (0x03|0x0023) plen 0
 > HCI Event: Command Complete (0x0e) plen 7
< HCI Command: Read Local Name (0x03|0x0014) plen 0
 > HCI Event: Command Complete (0x0e) plen 252
< HCI Command: Read Voice Setting (0x03|0x0025) plen 0
 > HCI Event: Command Complete (0x0e) plen 6
< HCI Command: Set Event Filter (0x03|0x0005) plen 1
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Write Page Timeout (0x03|0x0018) plen 2
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Write Connection Accept Timeout (0x03|0x0016) plen 2
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Inquiry (0x01|0x0001) plen 5
 > HCI Event: Command Status (0x0f) plen 4
 > HCI Event: Inquiry Result (0x02) plen 15
 > HCI Event: Inquiry Complete (0x01) plen 1


With userspace:
HCI sniffer - Bluetooth packet analyzer ver 1.42
device: hci0 snap_len: 1028 filter: 0xffffffffffffffff
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0
 > HCI Event: Command Complete (0x0e) plen 12
< HCI Command: Read Local Version Information (0x04|0x0001) plen 0
 > HCI Event: Command Complete (0x0e) plen 12
< HCI Command: Read Buffer Size (0x04|0x0005) plen 0
 > HCI Event: Command Complete (0x0e) plen 11
< HCI Command: Read BD ADDR (0x04|0x0009) plen 0
 > HCI Event: Command Complete (0x0e) plen 10
< HCI Command: Read Class of Device (0x03|0x0023) plen 0
 > HCI Event: Command Complete (0x0e) plen 7
< HCI Command: Read Local Name (0x03|0x0014) plen 0
 > HCI Event: Command Complete (0x0e) plen 252
< HCI Command: Read Voice Setting (0x03|0x0025) plen 0
 > HCI Event: Command Complete (0x0e) plen 6
< HCI Command: Set Event Filter (0x03|0x0005) plen 1
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Write Page Timeout (0x03|0x0018) plen 2
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Write Connection Accept Timeout (0x03|0x0016) plen 2
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Write Page Timeout (0x03|0x0018) plen 2
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Write Default Link Policy Settings (0x02|0x000f) plen 2
 > HCI Event: Command Complete (0x0e) plen 4
< HCI Command: Read Stored Link Key (0x03|0x000d) plen 7
 > HCI Event: Command Complete (0x0e) plen 8
< HCI Command: Read Local Version Information (0x04|0x0001) plen 0
 > HCI Event: Command Complete (0x0e) plen 12
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0
 > HCI Event: Command Complete (0x0e) plen 12
< HCI Command: Read Default Link Policy Settings (0x02|0x000e) plen 0
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1

Re: Another "hci0 command tx timeout"

[Gustavo F. Padovan]

Hi Sergej,

* Sergej Pupykin <ml@sergej.pp.ru> [2010-09-27 22:52:48 +0400]:

>   Hello, All.
> 
> How can I help to debug this issue? BT works without userspace, but does 
> not work if I enable it in udev rules (ACTION=="add", 
> SUBSYSTEM=="bluetooth", RUN+="/usr/sbin/bluetoothd --udev") or do 
> "/etc/rc.d/bluetooth start".

What do you mean by "works without userspace"?

-- 
Gustavo F. Padovan
ProFUSION embedded systems - http://profusion.mobi

Re: Another "hci0 command tx timeout"

[Sergej Pupykin]

  On 27.09.2010 23:21, Gustavo F. Padovan wrote:
>
> What do you mean by "works without userspace"
I try to do following:

1. ensure that userspace does not work (stop bluetoothd and comment udev 
bluetooth rule)
2. modprobe btusb
3. hciconfig hci0 up
4. hcitool inq

then remove btusb, uncomment udev rules, start bluetoothd and do 2-4 again.

With userspace I got

$ hcitool inq
Inquiring ...
Inquiry failed.: Connection timed out

and subj error in dmesg.

Also I see that hcidump with userspace does not catch inquiry command.

Re: Another "hci0 command tx timeout"

[Gustavo F. Padovan]

* Sergej Pupykin <ml@sergej.pp.ru> [2010-09-27 23:35:26 +0400]:

>   On 27.09.2010 23:21, Gustavo F. Padovan wrote:
> >
> > What do you mean by "works without userspace"
> I try to do following:
> 
> 1. ensure that userspace does not work (stop bluetoothd and comment udev 
> bluetooth rule)
> 2. modprobe btusb
> 3. hciconfig hci0 up
> 4. hcitool inq
> 
> then remove btusb, uncomment udev rules, start bluetoothd and do 2-4 again.

So that is the problem, you are removing btusb.

-- 
Gustavo F. Padovan
ProFUSION embedded systems - http://profusion.mobi

Re: Another "hci0 command tx timeout"

[Sergej Pupykin]

  On 27.09.2010 23:46, Gustavo F. Padovan wrote:
>
> So that is the problem, you are removing btusb.
>
Do you mean that removing/inserting back btusb can damage something? I 
repeat it many times and it always works if bluetoothd stopped and 
always does not work if bluetoothd is running.