Hi Dr Nukular:
You could run "btmon -w btsnoop.log" to capture the HCI logs, have
your devices connected, let them idle for a while, and observe which
side terminates the connection.
Also please make sure if you use the same peripheral devices when
you compare the re-connection latency before and after you upgrade
kernel/system. Bluetooth classic mouse/keyboard work differently from
BLE mouse/keyboard. When a classic bluetooth device disconnects, its
input node will be removed from kernel. Next time when reconnecting,
it needs to create its node again in kernel. On the other hand, when a
BLE device disconnects, its input node remains. Hence, a BLE device is
supposed to be a bit faster to reconnect.
Joseph
On Tue, Apr 10, 2018 at 2:06 AM, Dr Nukular <[email protected]> wrote:
> Hi Joseph,
>
>
> Thanks for the reply. Not sure, but that might be the case, however this
> issue started after a kernel / system update. Does that mean that before the
> update the system was ignoring the power saving mode of that device? In that
> case what changed exactly?
>
>
> Fedora 27. kernel 4.15.14. gnome-shell 3.26.2 gnome-bluetooth 3.26.1.
>
> ________________________________
> Von: Joseph Hwang <[email protected]>
> Gesendet: Montag, 9. April 2018 04:51:14
> An: Dr Nukular
> Cc: [email protected]
> Betreff: Re: Bluetooth connection drops after idle time
>
> Hi Dr Nukular:
>
> As far as I know, it is the peripheral device that enters power
> saving mode and disconnects.
>
> On Sat, Apr 7, 2018 at 2:32 PM, Dr Nukular <[email protected]> wrote:
>>
>> Bluetooth connection drops if the device, such as mouse or keyboard, is
>> inactive for some time. Once the device is used again the bluetooth
>> connection comes back on. This would not be an issue, if it wasn't for the
>> time that it takes until the connection is re-established again. It is not
>> responsive enough and interferes with the workflow, if you have to wait
>> several seconds until you can use your device again, especially since you
>> naturally expect an immediate response.
>>
>> If this is not a bug, then please enable a setting to disable that
>> "feature" or improve the time by reducing it to a minimum to reconnect the
>> device.--
>> To unsubscribe from this list: send the line "unsubscribe linux-bluetooth"
>> in
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>
>
>
> --
>
> Joseph Shyh-In Hwang
> Email: [email protected]
--
Joseph Shyh-In Hwang
Email: [email protected]