Daliz: Redownloaded the whole thing + patch and now it is in english.
Previously I got the "eON failed to initialize" message without patch, and with patch it crashed (SIGSEGV).
Now after redownloading (also deleted the whole ~/.local/share/cdprojektred folder) and (GOG-)patching, it still does not start but I don't get any error message. The screen flashes black and then back to desktop. Sounds like a graphics driver problem, which isn't surprising since I'm using AMD.
Sure ain't easy for me this time lol.
Are you using Catalyst or open radeon driver? With Catalyst you need the very latest one I think. Same thing with the open one really. In any case you can report your results to the community bug tracker. There is a log of the last run in $HOME/.local/share/cdprojektred/witcher2/eon.txt which you can provide with the bug report. You can also take a look there yourself, it might provide some hint about what went wrong.