Bug 512721

Summary:	VLC player audio engine plays only on one channel
Product:	[Applications] kasts	Reporter:	Samuele <samuele.zappala>
Component:	general	Assignee:	bart
Status:	CONFIRMED ---
Severity:	normal
Priority:	NOR
Version First Reported In:	25.08.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Samuele 2025-11-28 12:24:54 UTC

SUMMARY
I don't really know how to properly show the issue, as I don't have anything on the system that can show the audio coming from each channel, but when I use the "VLC player" audio engine I only get audio from one side (the right earbud), while changing to "QT multimedia" solves the problem.
Sources I'm experiencing it:
- https://realmen.it/podcast.rss
- https://feeds.transistor.fm/complex-systems-with-patrick-mckenzie-patio11

STEPS TO REPRODUCE
1. Open Kasts settings
2. Go to "General"
3. Change audio engine from "QT multimedia" to "VLC player"

OBSERVED RESULT
Audio gets directed only through one channel

EXPECTED RESULT
Audio should be played through bot channels

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: 4 × Intel® Core™ i5-2400 CPU @ 3.10GHz
Memory: 16 GiB of RAM (15.4 GiB usable)
Graphics Processor: llvmpipe
Manufacturer: LENOVO
Product Name: 7052A9G
System Version: ThinkCentre M91p

ADDITIONAL INFORMATION
Kasts: 25.08.3
Build ABI: x86_64-little_endian-lp64

Comment 1 bart 2025-11-28 12:45:08 UTC

This is a known issue with Fedora. I don't know why, but it seems that it's related to some default for VLC output (into pipewire?).
I don't think there is a setting that Kasts has access to to override this. But I can double check again.

I think there are even open duplicates of this ticket.

Comment 2 bart 2025-11-28 12:45:20 UTC

Confirmed

Comment 3 Samuele 2025-11-28 23:11:49 UTC

If we can find an issue reported to Fedora I can go there and we can close this issue, if it really is upstream.