How to change the resolution of the TTY on Arch Linux
Solution 1:
You can choose resolution editing GRUB configuration file /etc/default/grub
GRUB_GFXMODE=1024x768x32
Also check this parameter to allow the kernel use the same resolution used by grub:
GRUB_GFXPAYLOAD_LINUX=keep
Than run following command in Arch to activate changes:
# grub-mkconfig -o /boot/grub/grub.cfg
See GRUB documentation
Solution 2:
You need to set up your framebuffer: https://wiki.archlinux.org/index.php/Uvesafb