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

Hi Lars,

right now I'm using two BT devices with my Epox dongle, an MX900 mice
and a Sony Ericcson HBH-35 Headset with snd-bt-sco (voice mode 0x0060,
before you ask ;)

what does "hcitool info ..." say about your headset? What is the
firmware version of your EPoX dongle?

both devices work fluently when used without the other, but when I use
headset and mouse at the same time there are various problems during
connect, scan and usage.

The main usage problem was that the sco layer got scrambled audio
(sounded much like random data) on about every third sco connection.
After a while, mouse and headset began to block each other, and the
stack seemed to get more and more, well, muddy. After some more
connection retries even the mouse, before only "hanging" when the
headset tried to connect, stopped working fully.

dmesg only noticed this:

hci_scodata_packet: hci0 SCO packet for unknown connection handle 76

When even connection was impossible, I plugged the BT dongle out and put
it back in. After reloading the hid module and programs the mouse and
headset worked again.

I think that is a hardware problem. A protocol analyser would help to
track this down ;)

Regards

Marcel




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