That hurts to look at
My eyes are not great.
I might have missed it but the propriety nvidia driver is not mentioned afaikt
Try reinstalling it.
sudo pacman -S nvidia
so long as you card is not ancient.
To get nicer output for a forum with only the console you can redirect the output to a file eg
cat /var/log/Xorg.0.log > ~/X.log
then copy to a usb or something.
Or install pastebinit and pastebin it
pacman -S pastebinit
cat /var/log/Xorg.0.log | pastebinit -b paste.debian.net
Then post the link
If you reinstall the nvidia driver and it still doesn't work also try.
pacman -Q | pastebinit -b paste.debian.net
and post the link so I can see what packages you have installed. if you don't mind.
Also sudo dmesg | pastebinit -b paste.debian.net
would maybe how something ?
Off to bed soon.
btw I like the MC models