TrialnError [1] filed a deletion request for acpi_call-ck [2]: Original maintainer dropped it for acpi_call-dkms in 2016. So while it could be updated to make it work again with the recent kernel, nobody seemed to care, so why keeping it? [1] https://aur.archlinux.org/account/TrialnError/ [2] https://aur.archlinux.org/pkgbase/acpi_call-ck/