Just a heads up for the others, today's patch 2.0.20 made it work for me via steam. The changelog mentions this issue, which is probably also what was discussed here: 120128
There is no log file there. Just the steam cloud saves:
$ ls -lah ~/.factorio insgesamt 43K drwxrwxr-x 3 michael michael 3 Okt 21 18:51 . drwxrwx--- 121 michael michael 289 Okt 21 18:47 .. drwxrwxr-x 2 michael michael 308 Okt 21 18:58 saves
Please don't split the renderer. This just causes either more work for you or one renderer to be favored while the other runs bad and/or with bugs.
Please. think about OpenGL 4.5 only or Vulkan.