Bug 514269

Summary:	Bluetooth audio through speaker or headphone isn't crisp
Product:	[KDE Neon] neon	Reporter:	Jay <ypharis>
Component:	Packages User Edition	Assignee:	Neon Bugs <neon-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	jr, neon-bugs-null
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Jay 2026-01-07 12:38:39 UTC

SUMMARY
I'm not sure which packages caused this issue, but when i play bluetooth audio through my speaker or headphone using the SBC, SBC-XQ, aptX, and aptX HD codecs, the audio isn't always crisp and at times gets very choppy for multiple seconds. Not sure exactly when this happened, but likely within the last month. I tested the speaker and headphones on the USB live sessions of kubuntu 24.04.3, kubuntu 25.10, and KDE Neon user-20250904 and this behavior didn't appear. I then tested the KDE Neon user-20251225-1320 live session and it does happen there.

STEPS TO REPRODUCE
1. Turn on bluetooth
2. Connect speaker or headphone to bluetooth
3. Play a video or audio

OBSERVED RESULT
Audio is crisp at some points and choppy at others

EXPECTED RESULT
Audio is crisp all the time

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon 24.04
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.10.1

ADDITIONAL INFORMATION
I attempted to downgrade packages to test what might fix the issue and have include below each downgrade attempt copied from the apt log file. After each attempt i restarted and none of these fixed the issue.
* Downgrade: bluedevil:amd64 (4:6.5.4-0zneon+24.04+noble+release+build38, 4:6.5.3-
* Downgrade: bluedevil:amd64 (4:6.5.3-0zneon+24.04+noble+release+build37, 4:6.5.2-0zneon+24.04+noble+release+build36)
* Downgrade: kf6-bluez-qt:amd64 (6.21.0-0zneon+24.04+noble+release+build22, 6.20.0-0zneon+24.04+noble+release+build21)
* Downgrade: kf6-bluez-qt:amd64 (6.20.0-0zneon+24.04+noble+release+build21, 6.20.0-0zneon+24.04+noble+release+build20)
* Downgrade: kf6-bluez-qt:amd64 (6.20.0-0zneon+24.04+noble+release+build20, 6.19.0-0zneon+24.04+noble+release+build19), bluedevil:amd64 (4:6.5.2-0zneon+24.04+noble+release+build36, 4:6.5.1-0zneon+24.04+noble+release+build35)

Comment 1 Jay 2026-01-07 21:44:14 UTC

I downloaded older KDE Neon user ISOs from october and november, with the 20th of november being the last, and their isn't any problem with the bluetooth audio. So the issue has arisen during december, but i'm unable to find any early december ISOs to test. I also tested the january 1st ISO and it also has the bluetooth bug.