| Summary: | Mono audio is only played to left side of stereo outputs | ||
|---|---|---|---|
| Product: | [Applications] kasts | Reporter: | Be <be.0> |
| Component: | general | Assignee: | bart |
| Status: | REPORTED --- | ||
| Severity: | normal | CC: | accounts, kde |
| Priority: | NOR | ||
| Version First Reported In: | 25.04.1 | ||
| Target Milestone: | --- | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
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Description
Be
2025-06-16 06:37:11 UTC
Which audio backend is in use? You can check that in general settings Ah, I didn't know there were multiple backends. I had been using the VLC backend. I switched to Qt Multimedia and cannot reproduce this bug. I think I've seen an almost identical ticket in the past for another distro for one of the backends. It's very likely related to the compiler flags and plugins that were enabled for the respective audio backends/libs. So, apparently something changed in fedora. (In reply to Be from comment #2) > Ah, I didn't know there were multiple backends. I had been using the VLC > backend. I switched to Qt Multimedia and cannot reproduce this bug. Want to confirm that QT Multimedia works but VLC does not. VLC pipes it only to one ear, while qt multimedia functions appropriately. Still, Kasts recommends using VLC as the backend. Is there anything that can be done about this? (In reply to Claire from comment #4) > Is there anything that can be done about this? Since this is not a problem on other distros, this is very likely a fedora-specific issue with the out-of-the-box configuration of either vlc, pipewire, or some other package in the audio stack. The only thing you can do is open a bug report to fedora to fix the default behaviour for mono sources. Are you sure this is not a problem on other distros? Have you failed to reproduce the bug with the VLC backend on other distros? Yes, I'm using kasts native on arch and through flatpak, and both are ok with mono sources and the vlc backend. Claire, what distro are you using? I'm seeing the same issue (also on Fedora 42). In qpwgraph the output appears as "playback_AUX0" instead of "playback_FL" and "playback_FR". It does not seem to be unique to kasts. While playing a mono mp3 file works fine in VLC directly, playing it in Kaffeine (also using libVLC) shows the same issue. Kaffeine allows setting options for libVLC and there the problem goes away if I add "--stereo-mode=1" to the options. So apparently the default value of that setting seems to be incorrect. |