OrphicCreator

Well, I've tried updating my graphics card twice, which is Nvidia graphics, but the first time was about a year ago, and it didn't seem to have any effect on minecraft. However, I had to change my graphics card back to xorg because I would be met with a black screen. I tried this a second time a couple days ago, in which it did the same thing (black screen on login after rebooting computer), so I changed it back to xorg again. I don't think there was anything running in the background whenever it started freezing. The only notable change was that I enabled the output log in the settings of my launcher to see if that would tell me anything (which is what is in the first spoiler.) I did remove a each mod out of the several that I had individually at first to see if a mod or its dependencies were causing the crash though, and then just took them all out. After that I tried launching it 4 or 5 times throughout the day, and the next day it crashed, I tried 1.8.9 forge of which only had Optifine(that crashed too), then switched back to 1.12.2, the my computer froze.

Before my computer started freezing, it would tell me that it crashed at the launcher.

TL;DR: got 60-70 mods, minecraft started lagging, then crashing, then comupter began to freeze. So I've had forge for a few months now, playing with just a couple mods, mainly optifine, no tree punching, and dynamic trees. However, I soon found out about RLcraft, but I didn't want the whole mod pack. I went ahead and downloaded some of the mods from it, and added in a couple of my own as well. At first, heavy lag, because of what I am assuming is a crap computer with 7G of Ram(I have 4G of RAM allocated to Minecraft), and then Minecraft started to crash. I went through the process of taking out each of the mods and their dependencies, but minecraft continued to crash every time it showed the Forge loading screen. Now my whole computer simply freezes up with only my mouse being able to move. I'm on Ubuntu Linux 18.04 btw instead of Windows, and I use OpenJDK instead of Oracle's Java. Here are the logs I managed to get before my computer froze the last time I did it. As a last bit(I couldn't get this copied because it froze just before it displayed this on screen, and I have to shut my computer off every time it freezes), before my computer crashed, it would display some java 6 error or something.