Bug 512972

Summary:	Flatpak builds of Elisa using the LibVLC backend stutter at the beginning of tracks when playing on a Bluetooth audio output device
Product:	[Applications] Elisa	Reporter:	svoboda
Component:	general	Assignee:	Matthieu Gallien <matthieu_gallien>
Status:	CONFIRMED ---
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Flatpak
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	attachment-3461514-0.html attachment-3557756-0.html

Description svoboda 2025-12-05 09:00:26 UTC

SUMMARY
Stutters at the beginning of every track. I like the design but this makes it unusable for me. I have my music collection on a permanently mounted Windows partition. If this would be the reason: No excuse, all other players I tried play my songs without a flaw: VLC, Amarok, Strawberry, Rhythmbox. Tried to use Elisa for months, so updates came through, but didn't help with the stuttering.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 43
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.17.8-300.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-1165G7 @ 2.80GHz
Memory: 16 GiB of RAM (15.4 GiB usable)
Graphics Processor: Intel® Iris® Xe Graphics
Manufacturer: Acer
Product Name: Swift SF314-511
System Version: V1.13

Comment 1 Nate Graham 2025-12-08 21:38:52 UTC

Are you by any chance streaming the audio over Bluetooth?

Comment 2 svoboda 2025-12-09 14:20:35 UTC

Created attachment 187454 [details]
attachment-3461514-0.html

Hi Nate,

yes, I'm streaming over Bluetooth - which works fine with other apps.

Signatur

Am 08.12.25 um 22:38 schrieb Nate Graham:
> https://bugs.kde.org/show_bug.cgi?id=512972
>
> Nate Graham<nate@kde.org> changed:
>
>             What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                   CC|                            |nate@kde.org
>
> --- Comment #1 from Nate Graham<nate@kde.org> ---
> Are you by any chance streaming the audio over Bluetooth?
>

Comment 3 Nate Graham 2025-12-09 15:24:32 UTC

And it doesn't happen when the output is a non-Bluetooth local speaker or headphones, right?

Comment 4 svoboda 2025-12-09 19:40:41 UTC

Created attachment 187465 [details]
attachment-3557756-0.html

Hi Nate,

I cannot say wether it works without stutter over the notebook speakers. 
I had uninstalled Elisa, annoyed by the bug. No I have reinstalled it 
though not the flatpak but the dnf version instead. And it doesn't 
stutter over bluetooth! Seems to be an issue in the flatpak package. BTW 
the other apps I tried like Strawberry are flatpaks and work well with 
bluetooth.

Cheers

Markus

Signatur

Am 09.12.25 um 16:24 schrieb Nate Graham:
> https://bugs.kde.org/show_bug.cgi?id=512972
>
> --- Comment #3 from Nate Graham<nate@kde.org> ---
> And it doesn't happen when the output is a non-Bluetooth local speaker or
> headphones, right?
>

Comment 5 Nate Graham 2025-12-09 19:56:04 UTC

Yep, a colleague of mine confirmed the same thing. Seems to be Flatpak-related indeed.

I can reproduce it with the version on Flathub as well as the version in the KDE nightly Flatpak repo.

The Fedora Flatpak version is fine, interestingly.

A difference is that the Fedora Flatpak version uses the QtMultimedia backend with its own GStreamer backend, while the Flathub/Nightly builds use the LibVLC backend with its own ffmpeg backend.