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Date: Wed, 25 Jun 2014 10:08:00 +0300
Message-ID: <CABBYNZLhONv81vAN8OAFX1dK5UCm44AYb2sZLyUp2gRQ4CywcA@mail.gmail.com>
Subject: Re: LE mouse reconnect problem
From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: Ryan Press <ryan@presslab.us>
Cc: "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>
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Hi Ryan,

On Wed, Jun 25, 2014 at 5:27 AM, Ryan Press <ryan@presslab.us> wrote:
> I have a Microsoft Arc mouse, Surface edition.  This uses Bluetooth
> Low Energy.  Under dual boot Windows 8.1 I can connect this mouse, and
> it will reconnect just fine if I turn the mouse off/on or Bluetooth
> off/on.
>
> In Fedora rawhide I have Bluez 5.18-2.  I can pair this mouse just
> fine, and it will continue to work until I turn the mouse off/on or
> turn the computer off/on.  Then it won't reconnect automatically.  If
> I go into bluetoothctl I can connect it again and it will then work.
>
> I looked at bluetoothd and it seems to be doing the LE scan with:
> bluetoothd[2356]: src/adapter.c:trigger_passive_scanning()
> bluetoothd[2356]: src/adapter.c:passive_scanning_complete() status 0x00
> bluetoothd[2356]: src/adapter.c:discovering_callback() hci0 type 6 discovering 1
>
> I look also at hcidump and I see:
> < HCI Command: LE Set Random Address (0x08|0x0005) plen 6
>     bdaddr 39:6D:E2:EC:17:37
>> HCI Event: Command Complete (0x0e) plen 4
>     LE Set Random Address (0x08|0x0005) ncmd 1
>     status 0x00
> < HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7
>     type 0x01 (active)
>     interval 11.250ms window 11.250ms
>     own address: 0x01 (Random) policy: All
>> HCI Event: Command Complete (0x0e) plen 4
>     LE Set Scan Parameters (0x08|0x000b) ncmd 1
>     status 0x00
> < HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2
>     value 0x01 (scanning enabled)
>     filter duplicates 0x01 (enabled)
>> HCI Event: Command Complete (0x0e) plen 4
>     LE Set Scan Enable (0x08|0x000c) ncmd 2
>     status 0x00
> < HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2
>     value 0x00 (scanning disabled)
>     filter duplicates 0x00 (disabled)
>
>
> It doesn't seem to be finding anything?  Is there something else I should try?

Does it continue to scan or it scan a single time and stops, and have
you paired or just connect?


-- 
Luiz Augusto von Dentz