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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: Mon, 15 Oct 2018 08:43:12 +0000
Message-ID: <bug-200039-62941-AmGiAIX1CQ@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 #19 from Raghuram Hegde (raghuram.hegde@intel.com) ---

Thanks for the sharing complete btmon logs.
As evident from the below log snippet, once the remote device is disconnected,
the host will start a Passive scan. The filter policy is set to "Accept all
advertisement" as the previously paired device in the White List (Designer
Mouse) has random address:

< HCI Command: Disconnect (0x01|0x0006) plen 3            #159 [hci0] 19.853664
        Handle: 3585
        Reason: Remote User Terminated Connection (0x13)
> HCI Event: Command Status (0x0f) plen 4                 #160 [hci0] 19.855749
      Disconnect (0x01|0x0006) ncmd 1
        Status: Success (0x00)
> HCI Event: Disconnect Complete (0x05) plen 4            #161 [hci0] 19.903759
        Status: Success (0x00)
        Handle: 3585
        Reason: Connection Terminated By Local Host (0x16)
@ MGMT Event: Command Complete (0x0001) plen 10       {0x0001} [hci0] 19.903829
      Disconnect (0x0014) plen 7
        Status: Success (0x00)
        LE Address: DF:29:ED:8F:82:95 (Static)
@ MGMT Event: Device Disconnected (0x000c) plen 8     {0x0003} [hci0] 19.903852
        LE Address: DF:29:ED:8F:82:95 (Static)
        Reason: Connection terminated by local host (0x02)
@ MGMT Event: Device Disconnected (0x000c) plen 8     {0x0002} [hci0] 19.903852
        LE Address: DF:29:ED:8F:82:95 (Static)
        Reason: Connection terminated by local host (0x02)
< HCI Command: LE Set Scan Parame.. (0x08|0x000b) plen 7  #162 [hci0] 19.949197
        Type: Passive (0x00)
        Interval: 60.000 msec (0x0060)
        Window: 30.000 msec (0x0030)
        Own address type: Public (0x00)
        Filter policy: Accept all advertisement (0x00)
> HCI Event: Command Complete (0x0e) plen 4               #163 [hci0] 19.949798
      LE Set Scan Parameters (0x08|0x000b) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2    #164 [hci0] 19.949848
        Scanning: Enabled (0x01)
        Filter duplicates: Enabled (0x01)
> HCI Event: Command Complete (0x0e) plen 4               #165 [hci0] 19.951759
      LE Set Scan Enable (0x08|0x000c) ncmd 2
        Status: Success (0x00)


Since, passive scan is going on when the system is put to suspend, the system
wakes up when any Advertisement report is received.

Thanks,
Raghu

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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 [this message]
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
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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