linux-kernel - Bluetooth regression with headphones

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Message-ID: <4E6EB2DE.8090102@goop.org>
Date:	Mon, 12 Sep 2011 18:33:18 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	padovan@...fusion.mobi
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-bluetooth@...r.kernel.org, linux-wireless@...r.kernel.org,
	Keith Packard <keithp@...thp.com>
Subject: Bluetooth regression with headphones

Hi all,

I reported a regression in connecting my Nokia BH-905i headphones in
June this year (https://lkml.org/lkml/2011/6/23/770), which was the same
problem Keith Packard reported in https://lkml.org/lkml/2011/6/9/63.  
It was briefly fixed in
git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6.git.

Unfortunately it regressed again by the time of the linux-3.0 release,
to something with similar symptoms: the headphones won't reliably
connect to my laptop unless I freshly re-pair them.  However, unlike the
original bug, they will very occasionally connect normally, though I
don't know why.

This behaviour has been consistent since 3.0 up until the current
3.1-rc6 kernel.

What further information can I provide?  How can I help debug this?

Thanks,
    J
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