Thanks! i’ll try it out

It’s not frustrating if someone starts with linux without using windows once.

Yes, I killed the parent process. Also after killing the process with firefox PID, the file equivalent to that process /proc/PID was still there. I think it could be - “likely I/O or driver related” or “stuck in a syscall waiting on some kind of I/O operation that isn’t timing out/is bugged out/can never complete”.