If you are using the linux-rpi 64 bit kernel from graysky’s test repo, in connection with the above in post 1 the latest linux-rpi 64 bit kernel has been moved to the main repository, and graysky’s test repository is out of commission.
Users that are currently using graysky’s linux-rpi 64 bit test repository will need to update their pacman.conf file
$ sudo vi /etc/pacman.conf
[graysky]
Server = http://repo-ck.com/aarch64-test/
These two lines need to be either commented out with a preceding # sign, or deleted from the file.
Then