Title pretty much, I can't seem to find any fractures, fracture locator is not giving any hints of doing anything either no matter what direction i am looking when travelling long distances in overworld, thousands and thousands of blocks. I have ThaumicAugmentation-1.12.2-2.0.10 and using forge version 14.23.5.2854. I got plenty of other mods but none should be messing up with world gen i think to cause this to happen...

can I get around this somehow? I am playing on a server version 1.12.2-2.0.8. He can get around with a command, it's just that the main world is a sky block, and in hell I flew 3 thousand blocks, the locator does not react in any way.
Or can you put it in front of you? By entering the command.

I'm not sure fracture worldgen was designed to accommodate things like skyblock worlds, but if you want to generate a fracture you can use this command: "/thaumicaugmentation makefracture x1 y1 z1 [dim1] x2 y2 z2 [dim2]"

Dimension ID for the Overworld should be 0, and by default the ID for the Emptiness is 14676.

Сan it be that cracks do not appear because the void world is not loaded?

I doubt it, the Emptiness isn't loaded when fractures are generated in normal worlds anyway, it's probably more to do with the fact that there's no solid ground for the fractures to spawn on.

So in the next major update (given that these changes break fracture worldgen) I'll probably be changing the default config values to make fractures much more common in general, and especially in dimensions like the overworld where people have to travel potentially thousands of blocks. If you want to try out the settings I'm probably going to go with, here's what I was thinking so far:

Remember: changing these will break some fractures in existing worlds!

emptinessMoveFactor = 4.0
fractureGenChance = 25

Also, fractures should still be able to spawn in skyblock worlds, but they will be floating at the "average height" of the dimension. Not sure if skyblock packs change that, but for the normal overworld it's y=64.

I had a similar problem for a long while. When I did finally discover a fracture and opened it however, the fracture locator always lit up in its direction even from thousands of blocks away. I'm not sure what changed between updates, or if indeed anything changed at all.

Try looking in the Nether, they appear more commonly there. If you don't find any there, then something might have gone wrong with the worldgen.

Another thing I'd recommend is, if you don't have any hints from the locator even in the nether, reveal chunks in a circle, not in a straight line. Pregenerating chunks there might help. At least based on how easily I found a fracture once I knew where one was.

So fracture generation is one of those things I'd probably change a bit if I had the chance without horribly breaking existing worldgen. With the default config the Nether is indeed your best bet for finding fractures due to how the math works out. That same math makes you need to travel ~1000 blocks from the origin to even have a chance at a fracture in the overworld, while it's only about 128 blocks for the nether. I wish I could reduce that by default, but that would be a breaking change that I have to make on a major version.

The fracture locator also works by searching loaded chunks for fractures. I did it this way to not waste server performance constantly searching chunks for fractures in the background. The locator lighting up for far away fractures is a bug I'll fix.