[arch-general] Graceful shutdown Arch Linux

[Ram Kumar]

Dear Arch users,
I am Ramkumar from India, i use Archlinux with i3 and no login manager.
When i try to shutdown the machine, it throws lot of warnings about
ethernet port and etc..
and when turning on the machine and open an application, say firefox, it
shows like it has been crashed as if it was a forceful shutdown. But i
checked it whether firefox is closed before shutting down and it was
closed.
I am worried whether i am doing some nasty things while shutting the
machine down.
Could you please help me with some graceful shutdown options for Arch linux?

Thanks in advance

-Ramkumar