Edit 2: Problem solved by disabling OOM killer and overcommit.
I'm running 4x8GB sticks of corsair vengeance LPX RAM, a 5700xt and an r5 3600x.
I just installed ubuntu 20.04 a week ago to dual-boot with windows and I've been having RAM-related problems. Google chrome pages have been crashing with the aw, snap error:
SIGSEGV. Chrome will also completely crash if I have too many tabs open. I ran memtest86 from the ubuntu boot menu and it freezes at 16% on the first pass when I have all my ram in and 35% when only 2 sticks are in (doesn't seem to matter which two sticks or which DIMM slots, either). I've yet to be able to get past 2 seconds into a memtest86 test.
I don't have these issues when I run windows as the OS and the Windows Memory Diagnostic didn't return any errors. It seems like the issues come when I try to access more than a certain amount of RAM in Ubuntu but I'm not sure.
free -m shows the amount of memory i'd expect.
Does anyone have any thoughts? I've tried installing PPA drivers for my GPU and had a look at the latency timings for my RAM in the UEFI but no luck.
Edit: Memtest86 freezes 2 seconds into the first pass in Ubuntu but runs for hours with no errors when booted from USB. Both chrome and firefox frequently crash on Ubuntu but run perfectly under much more stress in Windows 10.