Re: [Bluez-users] Slow connection to Motorola H500 Headset

[Christoph Lukas <christoph.lukas@gmx.net>]

[-- Attachment #1: Type: text/plain, Size: 1283 bytes --]

Hi Brad,

thanks for your quick reply.

> > Audio transfer is working perfectly in both directions, the only minor
> > annoyance is that it takes several seconds for every connection to be
> > established.
> 
> maybe the headset is parking itself between connections. I don't know
> much about what can be done to influence its policy though.

It seems as if the headset enters some kind of 'powersave' mode after a
few seconds.


> you could start up hcidump before you bring up the headset and tell us
> what the dump looks like at the start. we might be able to tell what
> slows things down.

I did the following steps to produce the two attached hcidumps:

hcidump.log.fast.gz:
* start hcidump
* switch headset on
* wait for link key request and immediately start btsco
* wait for btsco to be ready and immediately start aplay
=> This results in an immediately starting audio playback

hcidump.log.slow.gz:
* start hcidump
* switch headset on
* wait for link key request and immediately start btsco
* wait about 30 sec. after btsco being ready before starting aplay
=> This results in an delay of 3-5 seconds before audio playback is
starting

This behaviour is reproducable.

If anybody has any hints what is happening here that would be great.

Thanks in advance,
Christoph



[-- Attachment #2: hcidump.log.fast.gz --]
[-- Type: application/x-gzip, Size: 29338 bytes --]

[-- Attachment #3: hcidump.log.slow.gz --]
[-- Type: application/x-gzip, Size: 50284 bytes --]

[-- Attachment #4: Type: text/plain, Size: 0 bytes --]



[-- Attachment #5: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users