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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-bluetooth@vger.kernel.org
Subject: [Bug 200039] BT advertising packet wakes up the system from S3 and suspend-to-idle
Date: Fri, 16 Nov 2018 15:17:59 +0000
Message-ID: <bug-200039-62941-SFYfma67vM@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-200039-62941@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=200039

--- Comment #27 from Raghuram Hegde (raghuram.hegde@intel.com) ---
In Bluetooth 4.1(LE Privacy 1.1), the Private address Resolving List is
maintained in the Host. Address resolution is also done by the Host. 
This requires Host intervention every time an advertisement packet with an RPA
is received. 

In Bluetooth 4.2(LE Privacy 1.2), 
the Resolving List is maintained in the Controller. Since the Controller
resolves the private address, the Host does not need to wake up in devices
where the Host is implemented using a separate CPU. This lowers overall power
consumption.

Having said that, Intel controller does support LE Privacy v1.2 feature.
However Linux kernel need to enable to make use of the Link Layer privacy 
to avoid this kind of issues.

This is generic problem/behavior observed on other vendors BT controller as
well that does not support LE privacy 1.2 feature. 

We highly recommend to enable LE privacy 1.2 to solve the problem.

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Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-200039-62941@https.bugzilla.kernel.org/>
2018-10-08  7:19 ` bugzilla-daemon
2018-10-08  7:21 ` bugzilla-daemon
2018-10-08  7:31 ` bugzilla-daemon
2018-10-09 10:53 ` bugzilla-daemon
2018-10-15  7:07 ` bugzilla-daemon
2018-10-15  8:43 ` bugzilla-daemon
2018-10-15 10:53 ` bugzilla-daemon
2018-10-15 11:25 ` bugzilla-daemon
2018-10-16  1:26 ` bugzilla-daemon
2018-10-16  6:28 ` bugzilla-daemon
2018-10-17  5:27 ` bugzilla-daemon
2018-10-27 19:22 ` bugzilla-daemon
2018-10-29  3:14 ` bugzilla-daemon
2018-11-16 15:17 ` bugzilla-daemon [this message]
2018-11-16 15:27 ` bugzilla-daemon
2019-02-27 15:22 ` bugzilla-daemon
2019-03-19  9:35 ` bugzilla-daemon
2019-03-19  9:43 ` bugzilla-daemon
2019-03-19  9:45 ` bugzilla-daemon
2019-09-11  8:29 ` bugzilla-daemon
2019-09-11 11:24 ` bugzilla-daemon
2019-09-11 16:05 ` bugzilla-daemon
2019-09-11 16:18 ` bugzilla-daemon
2019-09-19 14:45 ` bugzilla-daemon

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