On 10/31/2013 03:36 AM, Tedd Ho-Jeong An wrote:

On Wednesday, October 30, 2013 10:51:20 AM Hui Wang wrote:

> On 10/29/2013 07:16 PM, Marcel Holtmann wrote:

> > Hi Hui,

> >

> >> The problem is:

> >> On the machine which has Intel 7260 BT module, i use it to connect a

> >> bluetooth headset, it can successfully scan and connect to the headset,

> >> when i play sound to the bt headset, the problem comes, if the bt module

> >> is connected to the XHCI, it can work very well.

> >>

> >> u@u-Lenovo-B4400:~$ lsusb -t

> >> 1-7:1.0: No such file or directory

> >> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M

<snip>

>

> > Regards

> >

> > Marcel

Hi Hui,

Could you capture the HCI dump and send to me? Also, what's the platform/machine are you using for testing?

Regards,

Tedd

Hi Tedd,

The attachment is the log generated by hcidump, i used below commands to generate the log,

$hcidump -w ./lenovo-k4450-bt-ascii-hex.log -X -t

Then i start the bluetooth scan from the ubuntu bluetooth applet

it found the hm1700 headset, then it connected the headset successfully

play sound to the headset, can't hear any sound

Ctrl+C to terminate the hcidump

I have three machines on which install the intel 7260 BT module (8087:07dc), and BT module firmware version is 370710018002030d2e, and those modules are connected to the EHCI bus, they all have the same problem when i want them to work with the BT headset. The three machines are lenovo b4400, lenovo k4450 and lenovo m4400s.

I also have dozens of other machines on which the 7260 BT modules are connected to XHCI, they all work well to play sound to a headset.

So do you think it is a firmware issue?

Regards,
Hui.