Brainwave: a while back, to get a transparent panel, I changed my configuration to show the desktop with feh and had to comment out
in my /etc/xdg/lxsession/Peppermint/autostart file.
I'll bet that's the culprit. Is there no way to get a regular desktop in feh? Does that mean I must choose between a transparent panel and file visibility on the desktop?
That's the culprit.
And, no, you don't have to make that awful decision.
You can revert back to letting pcmanfm draw the desktop by uncommenting, leave feh alone and let it continue to draw the root wallpaper, else lxpanel transparency will just "look through" the desktop pcmanfm has drawn and see the black root window.
Set feh to draw the same wallpaper as pcmanfm is using.
then your Desktop files will/should show and the lxpanel should be *truly* transparent.
You could opt for setting the background image lxpanel uses as the same as the wallpaper pcmanfm draws without using feh, but that's not quite as transparent as this two wallpaper method.
Redundancy with wallpapers, I know, but it should work.
I can't recall for certain if this will work without xcompmgr or not. But I don't believe it is needed.
If you try it, and lxpanel isn't truly transparent, take a
look at this how to viewtopic.php?f=40&t=2781
You can ignore the part about the keybindings and omit transset and or docky as you choose.
xcompmgr will allow lxpanel transparency. But it will still *look through* the pcmanfm desktop to the black root window without the use of feh.
Any problems, let the board know.