>>125
Q4OS には独自のやり方があると分かった。下のコマンド使うのが推奨されてるよ。

Other desktop environments integration into the Q4OS system is supported, they could be installed alongside the default Trinity desktop, for example KDE Plasma, LXQt, XFCE and others. You can add a desktop environment using the Desktop Profiler tool, run it in terminal:

$ swprofiler.exu

https://www.q4os.org/dqa007.html#dskenv