Qt problem (since last update ?)

General Discussion
1

Hello everyone,

I recently started using Clear and I’ve noticed an issue since the last update (or maybe I hadn’t realized it before?).
Indeed, all qt-based programs are broken.
I’ve reinstalled 3 times on 2 different machines, and I can’t get applications like VLC to start, whether installed via swupd or from flathub.

Am I the only one experiencing this problem?
Does anyone have any suggestions on how to fix this issue?

For example here with VLC :

$ vlc -v
VLC media player 3.0.20 Vetinari (revision 3.0.20-0-g6f0d0ab126b)
[000055a7cf48cdb0] main libvlc warning: cannot read /usr/lib64/vlc/plugins/plugins.dat: No such file or directory
[000055a7cf48cdb0] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[000055a7cf6ea730] qt interface error: Unable to load extensions module
[000055a7cf4d18d0] main playlist: playlist is empty

qt-basic is OK, I have reinstalled it, repaired etc… nothing works.

2

Ok. I solved the problem.
I meticulously compared the installation of Clear on 2 machines, one with an Intel GPU, the other with an Nvidia GPU.
It was the machines with Nvidia GPUs that gave me trouble with the apps.
Actually, after installing the Nvidia driver, /etc/ld.so.conf and /etc/ld.so.conf.d appear.
I removed them, then ran ldconfig, rebooted, and magically, the apps started working again