My friend was running firefox on linux mint, and it froze and he used xkill to kill firefox. But still it shows up in htop ps -aux. He tried to kill it multiple times but it didn’t work. See the pictures for explanation. We had to kill power to shutdown, even systemd can’t stop that process.
killtakes a process ID (i.e. a number) not a process name. Either find the right PID withpsfirst or usekillall, although be aware thatkillalldoes exactly what it says: kills all processes matching the string it is given. If you only want to kill one of several Firefox processes that isn’t what you want.Sorry my mistake, it was
pkill, but we also triedkillwith process id, and we also triedkillall. Every method that I knew i tried.