Re: [Bluez-devel] "comlicated" setup - known issues for hid and SCO?

[Marcel Holtmann <marcel@holtmann.org>]

Hi Lars,

> | so both devices are in the same piconet. There should be no problem, but
> | from my position I can't tell you anything more.
> 
> I think this message might have something to do with the problem:
> 
> hci_scodata_packet: hci0 SCO packet for unknown connection handle 44
> 
> My main problem does not even seem to be connected to the mouse, because
> it also happens when the mouse is far far away and not connected.

this can also happen when the connection is already closed and then some
data packets arrive. Maybe it is a chip problem, because as I know CSR
never official supported the SCO over HCI/USB transport. Or the USB host
controller has problems with the ISOC transfers.

> In about 50% of SCO connections the sound coming from the headset is
> totally garbage (not the sound send TO the headset!); I think this might
> be connected to another report here on the list when someone mentioned
> he had to cut the first byte when recording audio from an SCO channel
> (because I'm using 16bit right now, too). This never happend with 8bit
> transmissions over SCO.

This can be that problem. We need an algorithm in the hci_usb driver to
detect this.

Regards

Marcel




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