Subject: Re: [Bluez-users] Inconsistencies in hcitool inq output
From: Marcel Holtmann <marcel@holtmann.org>
To: bluez-users@lists.sourceforge.net
In-Reply-To: <20060122205013.dvksy2wkrzk04s08@optimist.hostomega.com>
References: <20060122205013.dvksy2wkrzk04s08@optimist.hostomega.com>
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Date: Mon, 23 Jan 2006 09:09:11 +0100

Hi Josh,

> I've noticed inconsistencies in hcitool output for various functions including
> friendly name resolution and device classification:
> 
> antimony:~ $ hcitool inq
> Inquiring ...
>         11:11:11:11:11:12       clock offset: 0x2caf    class: 0x3e0100
>         00:02:72:47:38:FC       clock offset: 0x60c3    class: 0x020300
>         00:60:57:AD:D0:6B       clock offset: 0x691c    class: 0x500204
>         00:02:EE:6E:72:D3       clock offset: 0x1a0e    class: 0x500204
> antimony:~ $ hcitool inq --flush
> Inquiring ...
>         00:02:EE:6E:72:D3       clock offset: 0x1a0f    class: 0x500204
>         11:11:11:11:11:12       clock offset: 0x2caf    class: 0x3e0100
>         00:02:72:47:38:FC       clock offset: 0x60c3    class: 0x020300
>         00:60:57:AD:D0:6B       clock offset: 0x691d    class: 0x500204
> antimony:~ $
> 
> In the 1st scan, the device at 00:02:72:47:38:fc is identified with the same
> class information as the device at 00:60:57:ad:d0:6b.  In the 2nd scan a few
> seconds later, the device is is correctly identified with a class of 0x020300.
> 
> Any thoughts on why this happens, or recommendations for troubleshooting? 
> Unfortunately, I didn't catch this with hcidump. :(

this might be a kernel bug or it might be hardware problem. What device
are you using?

Regards

Marcel


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