The keymap in use is from October 2007, so predates 3.19 by a decade or so. Probably even earlier - I don't think I had the Falcon unpacked and set up at that stage yet. The keymap from 2015 should still work for all I can see. In actual fact, there is a change from 2015 (adding KEY_102ND) in the input driver meaning you fixed the default map in the kernel and might not have used a console map at all...
What should i do to find out which keymap version i use, and if outdated, what is to do to get the new version? The system has been apt-get updated and upgraded.
little progress update i installed console-data, since loadkeys de or loadkeys us got me the error "file de(or us) not found" still, the "Alternate" modifier is not working as desired. if i load US keys, i can at least enter some more |~ [] symbols, because i only need shift key then.