<![CDATA[Bluetooth pairing fails]]>I am attempting to pair my Linux Qt5 host with a device offering RFCOMM, and the service is already discovered. I try to pair with the device's address as follows:

m_adapterPtr->requestPairing(remoteService.device().address(),QBluetoothLocalDevice::Paired);

But this always results in:

qt.bluetooth.bluez: Failed to create pairing "org.bluez.Error.AuthenticationCanceled"

There are no signals emitted (other than state changed to pairing. Am I missing a step?

]]>https://forum.qt.io/topic/145293/bluetooth-pairing-failsRSS for NodeThu, 23 Apr 2026 00:18:52 GMTTue, 23 May 2023 00:03:07 GMT60<![CDATA[Reply to Bluetooth pairing fails on Fri, 10 Nov 2023 14:07:03 GMT]]>Fix will be available in Qt 6.7.

]]>https://forum.qt.io/post/779377https://forum.qt.io/post/779377Fri, 10 Nov 2023 14:07:03 GMT<![CDATA[Reply to Bluetooth pairing fails on Wed, 08 Nov 2023 08:42:00 GMT]]>I've created bug report: https://bugreports.qt.io/browse/QTBUG-118895

]]>https://forum.qt.io/post/779127https://forum.qt.io/post/779127Wed, 08 Nov 2023 08:42:00 GMT<![CDATA[Reply to Bluetooth pairing fails on Wed, 08 Nov 2023 08:08:35 GMT]]>@ocgltd said in Bluetooth pairing fails:

qt.bluetooth.bluez: Failed to create pairing "org.bluez.Error.AuthenticationCanceled"

I too get same error but without error signals... Have you found out way to handle it?

I guess workaround could be to monitor for (arbitrary) timeout once pairing request is created...

]]>https://forum.qt.io/post/779120https://forum.qt.io/post/779120Wed, 08 Nov 2023 08:08:35 GMT<![CDATA[Reply to Bluetooth pairing fails on Tue, 23 May 2023 20:42:42 GMT]]>@ocgltd You and are "fighting same battle" - not that helps you... My latest "observation" - since I have one local adapter and multiple remote devices - I am making sure only one remote device is paired...not sure if that is even necessary....

]]>https://forum.qt.io/post/759100https://forum.qt.io/post/759100Tue, 23 May 2023 20:42:42 GMT<![CDATA[Reply to Bluetooth pairing fails on Tue, 23 May 2023 15:13:18 GMT]]>@ChrisW67 The errorOccured signal is never emitted.

I'm not sure if a need to pair (to eventually connect to the RFCOMM service), but regardless shouldn't I be able to pair with the device?

]]>https://forum.qt.io/post/759070https://forum.qt.io/post/759070Tue, 23 May 2023 15:13:18 GMT<![CDATA[Reply to Bluetooth pairing fails on Tue, 23 May 2023 05:14:24 GMT]]>@ocgltd What are you seeing in your slot attached to errorOccurred()?

Are you sure you need to pair to use an RFCOMM service? This seems to indicate only a QBluetoothSocket is involved.

]]>https://forum.qt.io/post/759016https://forum.qt.io/post/759016Tue, 23 May 2023 05:14:24 GMT<![CDATA[Reply to Bluetooth pairing fails on Tue, 23 May 2023 01:35:33 GMT]]>@ocgltd Did you try QBluetoothLocalDevice::AuthorizedPaired

Per doc - if pairing fails you do not get "pairingDone",
I think there is an error SIGNAL I am about to try.

I am having heck of a time making sure Bluetooth service is actually running.

PS I just noticed - the error does not makes sense.

AuthenticationCanceled - should it be " pairing not authorized " instead? bluez is weird ...

]]>https://forum.qt.io/post/759009https://forum.qt.io/post/759009Tue, 23 May 2023 01:35:33 GMT