Cinnamon has something else. Is it still "Nemo"?
Yes, it's Nemo 4.8.6.
]]>[Desktop Entry]
Type=Application
Exec=pcmanfm-qt computer:///
Icon=computer
Name=Computer
When I launch it, I'm warned of an untrusted launcher. If I make it trusted, I now see the icon and the suffix is gone.
I wonder if this is some remnant from when I first logged into LXQt.
]]>Look inside those text files to see what's there. If they are actual .desktop files, they should look similar to the files in /usr/share/applications. Are they functional when you click on them?
]]>I use Cinnamon. After logging on (for the first and every other time), I find 4 files on my desktop: computer.desktop, network.desktop, trash-can.desktop and user-home.desktop. They have the icon of a text file, and their label includes their suffix. Instead, I expect to see: "Computer", "Network", "Trash Can", "Home", with the proper icons, and no ".desktop" extension.
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