Marcel,
Please find below hcidump traces for an issue i've seen with this headset.
In short:
We ask for sniff mode:
< HCI Command: Sniff Mode (0x02|0x0003) plen 10
handle 42 max 800 min 80 attempt 4 timeout 1
> HCI Event: Command Status (0x0f) plen 4
Sniff Mode (0x02|0x0003) status 0x00 ncmd 1
We get Mode change error message:
> HCI Event: Mode Change (0x14) plen 6
status 0x24 handle 42 mode 0x00 interval 0
Error: LMP PDU Not Allowed
After a couple seconds the device finally moves to sniff mode:
> HCI Event: Mode Change (0x14) plen 6
status 0x00 handle 42 mode 0x02 interval 2048
Mode: Sniff
When after a while we want to reopen the AVDTP stream but we forget to
move to active mode.
Is it something you've already seen ?
I'm still investigating the issue...
Cheers,
Fabien