[xenial] SRU: [PATCH v2 0/0] Bluetooth: increase timeout for le auto connections

Konrad Zapalowicz konrad.zapalowicz at canonical.com
Tue Nov 14 10:51:39 UTC 2017

From: Konrad Zapałowicz <konrad.zapalowicz at canonical.com>

SRU Justification:

BugLink: https://bugs.launchpad.net/bugs/1731467


Not possible to pair BLE remote devices such as sensors and such with
Ubuntu when the host system uses BT+WiFi combo SoC. The connection
attempt is disturbed with a timeout.


It has been fixed by increasing the timeout value from 2 seconds to
4 seconds. It is enough for the events to reach the stack (measured
that it takes between 3 and 3.5 seconds).


Tested with the device that failed to connect to Ubuntu Core gateway.
It fails w/o the patch, it connects just fine with the patch applied.

[Regression Potential]

Very small. The increased timeout is taken into consideration only for
new and scan report triggered connections. It will not make any already
working device to fail to pair.

[Other Info]

The bug has been discussed and fixed here:



The patch has been accepted by the upstream and will be a part of the
next kernel release. Currently in the bluetooth-next tree.

Konrad Zapałowicz (1):
  [xenial] (upstream) Bluetooth: increase timeout for le auto

 include/net/bluetooth/hci.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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