Invisible text/fonts in sddm

zirias@

Developer
I'm having a problem with sddm-greeter rendering some texts "invisible", very much like in this upstream bug report.

But for me, it doesn't depend on the locale, and it always works correctly when I start sddm-greeter in test mode using my own user. If I try test mode as user root or sddm, it shows the same bug.

Quite interestingly, if I set QT_QUICK_BACKEND=software, it always works correctly. So, my workaround for now is to put the following in /etc/xprofile:
Bash:
if [ "x$USER" = "xsddm" ]; then
        QT_QUICK_BACKEND=software
        export QT_QUICK_BACKEND
fi

There can't be a general OpenGL problem here as the greeter works fine without that workaround when started in test-mode from my running X session, so, any other ideas?
 
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