Bug 416035

Summary:	Bluetooth does not reconnect automatically to a paired device
Product:	[Unmaintained] Bluedevil	Reporter:	John van Spaandonk <jwork123nl>
Component:	general	Assignee:	David Rosca <nowrep>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	f.aguayosantos, jhgruver, mauromol, mcadoo.chen, me, nate, nicolas.fella, plasma-bugs-null
Priority:	HI	Keywords:	usability
Version First Reported In:	5.17.4
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description John van Spaandonk 2020-01-09 09:32:15 UTC

SUMMARY
KDE does not connect automatically to a paired Bluetooth speaker.

STEPS TO REPRODUCE
1. Pair the Bluetooth speaker, set it as default device
2. Connect to it, using the plasmoid menu
3. Switch off notebook
4. Switch on notebook, login to plasma

OBSERVED RESULT
The speaker is visible in the Bluetooth plasmoid, 
but no automatic connection is made, although it is set as the default device


EXPECTED RESULT
I expect the connection to be made automatically as soon as both plasma and Bluetooth speaker are both turned on.

SOFTWARE/OS VERSIONS
See bug properties

ADDITIONAL INFORMATION
If desired I could do some more experiments to narrow down the problem, please tell me what info you need.
BTW: I selected "system tray" as "Component", no idea if this is correct. 
Additional remark: I feel that you cannot expect a normal user to make a useful selection here!

Comment 1 John van Spaandonk 2020-02-05 10:16:50 UTC

I experimented some more: 
Bluetooth ONLY connects to a device automatically if the device is switched on AFTER the laptop has booted.
 
So after boot, bluetooth does not connect to an already-on speaker, even though I configured it to do this. Is this on purpose or is it an oversight? The behaviour is different to other devices that can connect to a Bluetooth speaker.

Comment 2 Nate Graham 2020-12-07 15:48:42 UTC

Can reproduce with my Bluetooth speaker device.

Comment 3 Nate Graham 2020-12-18 19:44:40 UTC

*** Bug 389368 has been marked as a duplicate of this bug. ***

Comment 4 Nate Graham 2020-12-18 19:44:49 UTC

*** Bug 430520 has been marked as a duplicate of this bug. ***

Comment 5 mcadoo.chen 2020-12-20 12:33:37 UTC

Reproduce in 5.19.5. Even click connect in bluetooth interface doesn't work. Only work when I remove and reconnect the bluetooth mouse.

Comment 6 Nicolas Fella 2022-01-22 14:12:56 UTC

FWIW the automatic reconnect is not done by Plasma, it's all handled in lower levels of the stack (i.e. bluez), so I'm inclined to say that this needs to be fixed there

Comment 7 Nate Graham 2022-01-23 00:58:25 UTC

Indeed, right you are.

FWIW It's working perfectly for me on Fedora 35 right now.

The upstream Bluetooth stack lives in the kernel, so I guess bugs should be reported at https://bugzilla.kernel.org/enter_bug.cgi?product=Drivers.

Comment 8 John van Spaandonk 2022-01-23 11:43:01 UTC

I confirm that since using Pipewire this works.