Re: Missing events after reconnect (BLE)

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Hi Jacob,

On Thu, Mar 12, 2015 at 2:42 PM, Luiz Augusto von Dentz
<luiz.dentz@xxxxxxxxx> wrote:
> Hi Jacob,
>
> On Thu, Mar 12, 2015 at 12:15 PM, Jacob Siverskog
> <jacob@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>> Hi Luiz!
>> Thanks for the patch, it seems to solve the issue on newly paired
>> devices. However, if I reboot the system it fails when registering
>> GATT service (no device files are created):
>>
>> Thu Mar 12 09:43:01 2015 kern.err kernel: hid-generic
>> 0005:2367:0004.0001: unbalanced collection at end of report
>> description
>> Thu Mar 12 09:43:01 2015 kern.warn kernel: hid-generic: probe of
>> 0005:2367:0004.0001 failed with error -22
>> Thu Mar 12 09:43:03 2015 daemon.err bluetoothd[1509]: Unable to
>> register GATT service with handle 0x0008 for device E7:D8:E4:BB:69:88:
>> Thu Mar 12 09:43:03 2015 daemon.err bluetoothd[1509]: Unable to
>> register GATT service with handle 0x0014 for device E7:D8:E4:BB:69:88:
>> Thu Mar 12 09:43:03 2015 daemon.err bluetoothd[1509]: Unable to
>> register GATT service with handle 0x0025 for device E7:D8:E4:BB:69:88:
>>
>> This is something I have not seen before (without the patch).
>
> Yep, this is caused because once you restart bluetoothd we loose the
> service cache which is probably passed to the kernel for probing, in
> this case we might have to delay the notification for drivers since we
> have to refresh the cache or just implement the persistent storage
> which is causing this to begin with.
>
>> Attached is bluetoothd log and btmon log interleaved with syslog on a
>> newly booted system. The system has one paired device (remote
>> control). The remote control was in sleep until I pressed a button on
>> it (at 3.17 secs in the btmon log).

Can you try with latest set Ive sent, that should fix the hid problem
after restarting bluetoothd.

>> Please let me know if you need more information.
>>
>>      Jacob
>>
>> On Wed, Mar 11, 2015 at 8:46 PM, Luiz Augusto von Dentz
>> <luiz.dentz@xxxxxxxxx> wrote:
>>> Hi Jacob,
>>>
>>> On Mon, Mar 9, 2015 at 6:11 PM, Jacob Siverskog
>>> <jacob@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>>> Hi!
>>>> We're developing a BLE remote control with a HID profile that goes to
>>>> sleep after being idle some time. It is waken
>>>> up by pressing a button on it, after waking up it performs undirected
>>>> advertising towards the host.
>>>>
>>>> Sometimes we see that the press is not registered by the host. We can
>>>> see the press in btmon but it never ends up in /dev/input/XXX.
>>>> Subsequent presses works fine.
>>>>
>>>> Attached are two btmon logs. What I can see is that the "press event"
>>>> (Handle Value Notification) is received earlier in the working case.
>>>>
>>>> Are we simply sending the event too early? Or is there any other issue?
>>>
>>> Sorry for the delay, for some reason this message went to my spam
>>> folder, anyway the problem we have is that we are not processing
>>> notification while MTU exchange is pending, please try with the
>>> attached patch (not tested so it may actually not work).
>>>
>>> --
>>> Luiz Augusto von Dentz
>
>
>
> --
> Luiz Augusto von Dentz



-- 
Luiz Augusto von Dentz
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