Re: Long delay to (re)connect a bluetooth mouse

[Marcel Holtmann <marcel@holtmann.org>]

Hi Daniel,

> For me, this is going to be a shot in the dark, not being familiar with 
> the Bluetooth protocol, but could one of you developers please say if 
> any of what follows makes sense?
> 
> Comparing the hci dumps from my mouse's reconnection and Stefan's, I am 
> suspicious of the first line below:
> 
> [...]                        
> 2010-01-08 00:15:03.136170 < ACL data: handle 42 flags 0x02 dlen 10
>     L2CAP(s): Info req: type 2
> 2010-01-08 00:15:03.144090 > HCI Event: Command Status (0x0f) plen 4
>     Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 1

I totally missed this command. Yes, you are on the right track. We have
a timeout for devices not responding to information request.

#define L2CAP_INFO_TIMEOUT      (4000)  /*  4 seconds */

Problem here is that information request is actually needed to determine
the features of the remote L2CAP stack.

Regards

Marcel