Crash report: https://crash-stats.mozilla.org/report/index/1240b782-0065-4ac0-a2e4-21b940221122

Reason: SIGSEGV / SI_KERNEL

Top 10 frames of crashing thread:

0  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xe4bf31  
1  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xdef8e5  
2  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xead3f0  
3  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xbbc8a4  
4  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xb9f97f  
5  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xba1d94  
6  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xf33709  
7  libnvidia-glsi.so.510.85.02  libnvidia-glsi.so.510.85.02@0x3f558  
8  libnvidia-eglcore.so.510.85.02  libnvidia-eglcore.so.510.85.02@0xc2234a  
9  libxul.so  gleam::ffi_gl::Gl::UseProgram  x86_64-unknown-linux-gnu/release/build/gleam-5d0c671d6b08c308/out/gl_bindings.rs:4792

Not sure if this should goes to External software affect Firefox, but I decided to go with Graphics folks first.

One of the comments "Second time today. I unlock the screen and FF has crashed. It also didn't restart last time when I hit Restart Firefox."

I get a few crashes every day with the 510 driver when opening the lid of my laptop. The problem is that the newer 515 was triggering crashes when running ASAN xpcshell-tests, and while 520 didn't have that problem, it completely broke external monitors on my laptop :( So I'm sticking with 510 until 525 comes out of beta.