Scenario:
[chad@blackpad rabbitvcs]$ sudo pacman -Syu │··············
error: GPGME error: No data │··············
error: GPGME error: No data │··············
error: GPGME error: No data │··············
:: Synchronizing package databases... │··············
error: GPGME error: No data
...
Solutions:
# rm /var/lib/pacman/sync/*db.sig*
# pacman-key --init
# pacman-key --populate archlinux
# pacman -Syy
# pacman -Syu
If "File ... is corrupted (invalid or corrupted package (PGP signature))" occured during install a package, when pacman asked "Do you want to delete it? (Y/n)", press