I must correct my self: This was an update from devuan chimaera and an
old history concerning $HOME, which lives with me since years
Today I made a fresh install in a virtual machine and every thing works
fine.
Then I deleted directories
rm -r $HOME/.config/kicad $HOME/.cache/kicad $HOME/.local/share/kicad
I started KiCad again as $USER and it acknowledged the libraries.
This is an aide at least for those who do not have a valuable history in
KiCad
For the others the problem remains to be solved
best regards bugreportem
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