Re: [Bluez-devel] hcid returning "Device or resource busy"?

[Marcel Holtmann <marcel@holtmann.org>]

Hi Bastien,

> > > > HCI Event: Command Status (0x0f) plen 4
> > > >     Remote Name Request Cancel (0x01|0x001a) status 0x01 ncmd 1
> > > >     Error: Unknown HCI Command
> > > 
> > > Looks like a BT1.1 dongle to me since Remote Name Request Cancel was
> > > introduced after that.
> > > And since the device is not yet finished paging during the remote name
> > > request, it disallows the Inquiry Command.
> > > 
> > > Solution: Get yourself a dongle > BT1.1 !
> > 
> > actually it was the Create Connection Cancel that was introduced with
> > Bluetooth 1.2. The Remote Name Request Cancel was always present, but it
> > seems we have a chip that doesn't support it.
> > 
> > Bastien, what does "hciconfig hci0 version" tells you?
> 
> Same device, different machine (the dongle followed me to the office):
> 
> $ hciconfig hci0 version
> hci0:   Type: USB
>         BD Address: 00:08:F4:00:43:8D ACL MTU: 192:8 SCO MTU: 64:8
>         HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver:
> 0x20d
>         Manufacturer: Cambridge Silicon Radio (10)
> 
> I hope there's at least some way to get it working. I'd rather not have
> to have another dongle just because hcid doesn't like it :)

the problem is that the baseband is busy with the remote name request.
It has to page the remote device for getting the name and in that case
you simply can't run an inquiry. All currently available Bluetooth chips
have this limitation.

Main question is why we have the remote name request just before you
wanna start the inquiry. What D-Bus methods are you actually calling in
what order? I think you constructed a use case that we never tested.

Regards

Marcel



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