Updating system issue - corrupted package

doc/issues_update_parabola.org

@@ -0,0 +1,64 @@
+#+date: 2023-03-08
+#+options: toc:nil num:nil
+#+bibliography: ../bib/biblio.bib
+
+* Invalid or corrupted package - PGP signature
+
+
+Sometimes when updating the system (Parabola-GNU linux) the system can't be updated:
+
+#+begin_quote
+error: iceweasel: signature from "bill-auger <bill-auger@peers.community>" is unknown trust
+:: File /var/cache/pacman/pkg/iceweasel-1:110.0.1-1.parabola1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
+#+end_quote
+
+The Arch linux wiki offers the following options:
+
+#+begin_quote
+pacman-key depends on system time. If your system clock is not synchronized, system installation/upgrade may fail with:
+#+end_quote
+
+** Options to solve: use ntpd
+
+Correct the system time using the following (as sudo):
+
+First synchronize the local clock with the network clock using ~ntpd~ (NTP daemon program)[fn:1]:
+
+#+begin_example sh
+  ntpd -qg
+#+end_example
+
+Here the command uses the arguments "q" (force-step-once) "g" (panicgate). Check the manual (~$ man ntpd~) to know the details.
+
+Then, use the following to set the hardware clock from the system clock:
+
+#+begin_example sh
+  hwclock -w
+#+end_example
+
+** Remove package from cache
+
+Some packages could be corrupted or may be unsigned, causing failure. Remove each offending package from the system cache rm /var/cache/pacman/pkg/pkgname so it gets freshly downloaded, or clear the entire cache.
+
+** Upgrade pacman-key and refresh keys
+
+Upgrade keyring (should use ~sudo~)
+
+#+begin_example sh
+  pacman -S archlinux-keyring
+  pacman -S parabola-keyring
+#+end_example
+
+Refresh keys (should use ~sudo~)
+
+#+begin_example sh
+  pacman-key --refresh-keys
+#+end_example
+
+** References
+
+-[[https://wiki.archlinux.org/title/Pacman/Package_signing#Upgrade_system_regularly][Arch linux Wiki]]
+
+* Footnotes
+
+[fn:1]NTP stands for Network Time Protocol