When I upgraded from 15.04 to 15.10, this included a new version of VLC, as well as a newer Qt. VLC now uses the Qt file open dialog, but I want the GTK one back. I have already checked VLC themes and qt4-qtconfig, which make no difference to the dialog when changing the theme. Is there a qt5-config or an advanced VLC setting I've missed?
Ubuntu – VLC 2.2.1 using Qt dialog
15.10gtkqtupgrade
Related Solutions
From your screenshot - perhaps just double check that you haven't got your opacity of popup windows slightly transparent (assuming you are using the default compositor)
Unfortunately Qt5 designers removed the package equivalent of qt4-qtconfig in Qt4.
They leaved as well quite a big bug behind as Qt5 ignores the font-config of the system.
There is then no way around to "correct" the font used by Qt5.
To get some applications behave like the others on my desktop I had to recompile them with Qt4 whenever possible.
Thus bug is now reported as closed in Qt5 version 5.4 on Aug. 20, 2014 ...
However, at this moment there is no Debian nor Ubuntu packages available from Qt5 version 5.4, even in the “Canonical Qt5 Edgers” team PPA.
Although I found a Qt5 Configuration Tool on http://qt-apps.org website, still this app requires Qt5 version 5.4.0.
I hope Ubuntu will backport this version to Trusty 14.04 LTS one day ...
Best Answer
Just hit the same issue after upgrading to VLC 2.2.1-5+b1 on Debian Testing, and solved it by installing the libqt5libqgtk2 package.
Recently Used is back in the file chooser and I'm once again a happy camper.