Audacious - OLD, PLEASE USE GITHUB DISCUSSIONS/ISSUES

I'm running Fedora 33 KDE-spin, with plasma 5.19.5

If using the Fedora supplied packages, they build Audacious with Qt and GTK+2 but the default is the Qt based UI. So, as a temporary workaround, create a launcher script for Audacious that executes "audacious -G" or "audacious --gtk", and use that always to start Audacious. Then open the preferences and enable the Winamp UI.

It could be that Audacious based on Qt is in need of a few fixes, since previously the default UI was the GTK+ v2 based one, and fewer people have tried the Qt based UI. Another desktop env that seems to cause problems is Cinnamon. GNOME Shell sort of works, but if turning on the Winamp mode while using the Qt based UI, here one cannot move the windows.

I've noticed the issue with the Gnome Shell on Fedora 33 (stock not a spin) whereby you can't move any of the windows when you enable the Winamp mode. Don't suppose there is a bug ticket for that or a more permanent fix rather than the launcher options tweak?

As a note for other people whom may have this issue on Fedora 33. If you follow the guidelines from here: -

https://superuser.com/questions/304271/commandline-options-in-gnome-3-launchers

But rather than the firefox copy the audacious.desktop and add the `--gtk` to the exec= line you can then go back to launching using the gui rather than terminal.

Thanks Micheal for the quick response.
Sorry I didn't see your answer till now (I did not receive any notifications).
Adding --gtk to the launcher simply does the trick!
Thanks!

I had a similar crash of another program (MythTV) generating the same error and crash.
Looking for a solution, I found some people with the same error in another project (Jami-lrc), with a solution.

https://git.jami.net/savoirfairelinux/ring-lrc/issues/428#note_19176
The culprit seems to be libpbf.so

Removing /usr/lib64/qt5/plugins/imageformats/libpbf.so
and updating qt5-qtimageformats one small version (5.15.1 -> 5.15.2) did the trick.
Now MythTV works, and Audacious can be started in Winamp-mode without --gtk flag!

qt5-qtimageformats is a Qt plugin that isn't even installed by default. Perhaps KDE pulls it in. There are only few direct dependencies on it:

$ sudo dnf repoquery --whatrequires qt5-qtimageformats
qt5-qt3d-0:5.15.1-1.fc33.i686
qt5-qt3d-0:5.15.1-1.fc33.x86_64
qt5-qt3d-0:5.15.2-2.fc33.i686
qt5-qt3d-0:5.15.2-2.fc33.x86_64
rapid-photo-downloader-0:0.9.24-2.fc33.noarch
telegram-desktop-0:2.4.3-1.fc33.x86_64
telegram-desktop-0:2.4.7-4.fc33.x86_64

/usr/lib64/qt5/plugins/imageformats/libpbf.so is from a different package, on the other hand, so if you have removed it, maybe that other package is the culprit:

$ sudo dnf repoquery --whatprovides /usr/lib64/qt5/plugins/imageformats/libpbf.so
qt5-qtpbfimageformat-0:2.2-4.fc33.x86_64

python3-pyside2 requires qt5qt3d. Probably that way I got hold of libpbf.so.
Updating qt5-qtimageformats triggered a bunch of other qt related updates, but most likely not qt5-qtpbfimageformat, since libpbf.so is still gone.
Nevertheless the problems are gone, and it even seems that some subtle KDE problems that were bothering me, are solved now.
I'll try to pay attention when qt5-qtpbfimageformat will be updated, to see if the problems return.

This should be fixed in Audacious 4.2. See #1166, and also https://github.com/tumic0/QtPBFImagePlugin/issues/7 for more info.