Touchpad without clicking in Arch Linux
Check that xf86-input-synaptics has been installed:
# pacman -Ss xf86-input-synaptics
otherwise, install it:
# pacman -S xf86-input-synaptics
But if you included the package and it didn't work:
Edit file /etc/default/grub
# nano /etc/default/grub
add in line GRUB_CMDLINE_LINUX_DEFAULT: pci=nocrs
save
Execute: # update-grub
reboot
pci=nocrs => Discard pci ACPI information. May fix boot problems.
