всё по инструкции:https://wiki.hyperbola.info/doku.php?id=en:guide:installation на юэсби лаив
date ...
pacman-key --init
mount -o remount,size=100M,noatime /etc/pacman.d/gnupg
pacman-key populate hyperbola arch
...
pacman-key --refresh-keys
gpg: refreshing 77 keys from hkp://keyserver.ubuntu.com
gpg: key x1: signature not checked due to a missing key
gpg: key x1: "имя фамилия <x@x.x>" not changed
gpg: key x2: signature not checked due to a missing key
gpg: key x2: "имя фамилия <x@x.x>" not changed
gpg: key x3: signature not checked due to a missing key
gpg: key x3: "имя фамилия <x@x.x>" not changed
...
gpg: Total number processed: 75
gpg: new user IDs: 17
gpg: new subkeys: 3
gpg: new signatures: 4064
gpg: key 16x1: no user ID for key signature packet of class 10
gpg: key 16x1: no user ID for key signature packet of class 10
gpg: key 16x1: no user ID for key signature packet of class 10
gpg: key 16x1: no user ID for key signature packet of class 10
gpg: key 16x2: no user ID for key signature packet of class 10
gpg: key 16x2: no user ID for key signature packet of class 10
gpg: key 16x2: no user ID for key signature packet of class 10
gpg: key 16x2: no user ID for key signature packet of class 10
gpg: key 16x2: no user ID for key signature packet of class 10
...
gpg: public key 16x is 3037 days newer than the signature
gpg: marginals needed: 3 completes needed: 1 trust model: pgp
gpg: depth: 0 valid: 1 signed: 60 trust: 0-, 0q, 0n, 0m, 0f, 1u
gpg: depth: 1 valid: 60 signed: 8 trust: 0-, 0q, 0n, 60m, 0f, 0u
gpg: next trustdb cheak dne at 2022-02-28
==> ERROR: A specified local key could not be updated from a keyserver.
в разные разы выдавал разные результаты | я менаял сервера ключей в /etc/pacman.d/gnupg/gpg.conf