Fehler: linux-cachyos-lts: Signatur von “CachyOS admin@cachyos.org ” ist ungültig:: Datei /var/cache/pacman/pkg/linux-cachyos-lts-6.18.28-1-x86_64_v4.pkg.tar.zst ist beschädigt (Ungültiges oder beschädigtes Paket (PGP-Signatur)). Soll die Datei entfernt werden? [J/n] Fehler: linux-cachyos-lts-headers: Signatur von “CachyOS admin@cachyos.org ” ist ungültig:: Datei /var/cache/pacman/pkg/linux-cachyos-lts-headers-6.18.28-1-x86_64_v4.pkg.tar.zst ist beschädigt (Ungültiges oder beschädigtes Paket (PGP-Signatur)). Soll die Datei entfernt werden? [J/n] Fehler: linux-cachyos-lts-nvidia-open: Signatur von “CachyOS admin@cachyos.org ” ist ungültig:: Datei /var/cache/pacman/pkg/linux-cachyos-lts-nvidia-open-6.18.28-1-x86_64_v4.pkg.tar.zst ist beschädigt (Ungültiges oder beschädigtes Paket (PGP-Signatur)). Soll die Datei entfernt werden? [J/n] Fehler: Der Vorgang konnte nicht durchgeführt werden (Ungültiges oder beschädigtes Paket)
is therw a solution?
cscs
May 8, 2026, 8:05pm
2
Have you tried any of the related threads?
https://discuss.cachyos.org/search?q=signature%20is%20invalid%20PGP%20order%3Alatest
hello,
when trying to update my system with sudo pacman -Su, after tha packages download the terminal outputs three errors for three different packages, all regarding the same signature of Daniel Bermond, saying that it has a marginal reliability. It specifies a file, one for each package error and it says it’s not valid or it’s corrupted (pgpsignature). Then it asks to remove it but either choice doesn’t work. The packages are: libmfx, intel-media-sdk and onetbb.
Since errors occur, any of th…
you mean this?sudo pacman -Sy archlinux-keyring
Try
sudo pacman -Sy cachyos-keyring
then.
this also notsudo pacman -Sy cachyos-keyring
I have the same problem
deletet with sudo rm -rf /etc/pacman.d/gnupg/
after that i had a new error with my mega repo
installed with sudo pacman -Sy cachyos-keyring
refreshed the mirrors, but the error is not gone
cscs
May 8, 2026, 8:36pm
7
The point was to use the search feature.
Heres another one from 5 days ago that goes over just about all of the possibilities if something is actually out-of-whack on the local system;
You need to remove this then.
sudo pacman -Rns WallpaperEngine_kde6
You need to fix your keys then.
You can do something like the following;
sudo cachyos-rate-mirrors
sudo rm -r /etc/pacman.d/gnupg/
sudo pacman-key --init
sudo pacman-key --populate
pacman-key --recv-keys F3B607488DB35A47 --keyserver keyserver.ubuntu.com
pacman-key --lsign-key F3B607488DB35A47
sudo pacman -Scc
sudo rm -r /var/lib/pacman/sync
sudo pacman -Syy archlinux-keyring cachyos-keyring
You probably did not need all o…
Though if this is a constant issue for you you might consider some other things like network reliability, frequency of update, or pacman or other configurations.. etc.
I wonder how the error came about on my end. It’s a test system. I only use it now and then. The last time I was on it was to update it. A restart and then into the other OS. It’s very strange indeed.
I’ll have a go tomorrow. I’m too tired now… Thanks for the advice. The search didn’t turn anything up for me, somehow.
Same issue here, nothing i found online worked
I’m also having the exact same issue with the same packages, two hours after you posted, and resetting keyrings, refreshing mirrors, and deleting pacman cache did not work.
cscs
May 8, 2026, 10:31pm
12
kierownik:
Thats .. just a worse way of performing sudo pacman -Scc.
desertwalrus:
two hours after you posted, and resetting keyrings, refreshing mirrors, and deleting pacman cache did not work.
So does that include
cscs:
You can do something like the following;
sudo cachyos-rate-mirrors
sudo rm -r /etc/pacman.d/gnupg/
sudo pacman-key --init
sudo pacman-key --populate
pacman-key --recv-keys F3B607488DB35A47 --keyserver keyserver.ubuntu.com
pacman-key --lsign-key F3B607488DB35A47
sudo pacman -Scc
sudo rm -r /var/lib/pacman/sync
sudo pacman -Syy archlinux-keyring cachyos-keyring
You probably did not need all of it but this covers just about everything that could be wrong with the keys I think.
Hm, tried all of that and it still did not work. Ty for the continued assistance in this thread tho. Seeing as multiple users are getting the same issue around the same time, do you think it’s a bug of some sort or some other issues?
cscs
May 8, 2026, 11:28pm
14
What is the output when running the update now?
sudo pacman -Syu
buenas tengo el mismo problema como se debe proceder
linux-cachyos-lts-headers-6.18.28-1-x86_64_v4 29.9 MiB 37.1 MiB/s 00:01 \[------------------------------------------------------\] 100%
linux-cachyos-lts-nvidia-open-6.18.28-1-x86_64_v4 8.2 MiB 9.60 MiB/s 00:01 \[------------------------------------------------------\] 100%
linux-cachyos-lts-6.18.28-1-x86_64_v4 148.1 MiB 62.6 MiB/s 00:02 \[------------------------------------------------------\] 100%
Total (6/6) 218.4 MiB 91.6 MiB/s 00:02 \[------------------------------------------------------\] 100%
(6/6) checking keys in keyring \[------------------------------------------------------\] 100%
(6/6) checking package integrity \[------------------------------------------------------\] 100%
**error:** linux-cachyos-lts: signature from "CachyOS <admin@cachyos.org>" is invalid
**:: File /var/cache/pacman/pkg/linux-cachyos-lts-6.18.28-1-x86_64_v4.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).**
**Do you want to delete it? \[Y/n\]** y
**error:** linux-cachyos-lts-headers: signature from "CachyOS <admin@cachyos.org>" is invalid
**:: File /var/cache/pacman/pkg/linux-cachyos-lts-headers-6.18.28-1-x86_64_v4.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).**
**Do you want to delete it? \[Y/n\]** y
**error:** linux-cachyos-lts-nvidia-open: signature from "CachyOS <admin@cachyos.org>" is invalid
**:: File /var/cache/pacman/pkg/linux-cachyos-lts-nvidia-open-6.18.28-1-x86_64_v4.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).**
**Do you want to delete it? \[Y/n\]**
I’m having the same problem, since yesterday. The only packages that fail are linux-cachyos-lts*
Maybe the problem is in the repo. Is anyone able to upgrade these packages?
Running pacman -Syu --ignore “linux-cachyos-lts*” successfully upgraded all other packages.
~ >>> sudo pacman -Syu --ignore "linux-cachyos-lts*"
:: Synchronizing package databases...
cachyos-v4 is up to date
cachyos-core-v4 is up to date
cachyos-extra-v4 is up to date
cachyos is up to date
core is up to date
extra is up to date
multilib is up to date
:: Starting full system upgrade...
warning: linux-cachyos-lts: ignoring package upgrade (6.18.26-1 => 6.18.28-1)
warning: linux-cachyos-lts-headers: ignoring package upgrade (6.18.26-1 => 6.18.28-1)
resolving dependencies...
looking for conflicting packages...
Package (64) Old Version New Version Net Change
cachyos-extra-v4/ark 26.04.0-1.1 26.04.1-1.1 0.03 MiB
cachyos-extra-v4/at-spi2-core 2.60.2-1.1 2.60.3-1.1 0.05 MiB
cachyos-extra-v4/baloo-widgets 26.04.0-1.1 26.04.1-1.1 0.00 MiB
cachyos-extra-v4/clang 22.1.3-1.1 22.1.5-1.1 8.24 MiB
extra/code 1.118.1-1.1 1.119.0-1 -0.51 MiB
cachyos-extra-v4/compiler-rt 22.1.3-1.1 22.1.5-1.1 1.32 MiB
cachyos-extra-v4/dolphin 26.04.0-1.1 26.04.1-1.1 -0.02 MiB
cachyos-extra-v4/feh 3.12.1-1.1 3.12.2-1.1 0.01 MiB
cachyos-extra-v4/ffmpegthumbs 26.04.0-1.1 26.04.1-1.1 0.00 MiB
cachyos-extra-v4/filelight 26.04.0-1.1 26.04.1-1.1 0.01 MiB
extra/fish 4.7.0-1 4.7.1-1 0.00 MiB
cachyos-extra-v4/gwenview 26.04.0-1.1 26.04.1-1.1 0.04 MiB
cachyos-extra-v4/kaccounts-integration 26.04.0-1.1 26.04.1-1.1 0.01 MiB
cachyos-extra-v4/kate 26.04.0-1.1 26.04.1-1.1 -0.02 MiB
cachyos-extra-v4/kcalc 26.04.0-1.1 26.04.1-1.1 0.01 MiB
cachyos-extra-v4/kdeconnect 26.04.0-1.1 26.04.1-1.1 0.03 MiB
cachyos-extra-v4/kdegraphics-mobipocket 26.04.0-1.1 26.04.1-1.1 0.01 MiB
cachyos-extra-v4/kdegraphics-thumbnailers 26.04.0-1.1 26.04.1-1.1 0.00 MiB
cachyos-extra-v4/kdialog 26.04.0-1.1 26.04.1-1.1 0.02 MiB
cachyos-extra-v4/kicad 10.0.1-2.1 10.0.2-1.1 12.89 MiB
extra/kicad-library 10.0.1-1 10.0.2-1 0.04 MiB
extra/kicad-library-3d 10.0.1-1 10.0.2-1 0.12 MiB
cachyos-extra-v4/kio-admin 26.04.0-1.1 26.04.1-1.1 0.00 MiB
cachyos-extra-v4/kio-extras 26.04.0-1.1 26.04.1-1.1 0.02 MiB
cachyos-extra-v4/konsole 26.04.0-1.1 26.04.1-1.1 0.01 MiB
cachyos-extra-v4/krdc 26.04.0-1.1 26.04.1-1.1 -0.01 MiB
cachyos-extra-v4/kwalletmanager 26.04.0-1.1 26.04.1-1.1 0.00 MiB
multilib/lib32-at-spi2-core 2.60.2-1 2.60.3-1 0.01 MiB
multilib/lib32-clang 22.1.3-1 22.1.5-1 1.84 MiB
multilib/lib32-libgpg-error 1.60-1 1.61-1 0.00 MiB
multilib/lib32-llvm-libs 1:22.1.3-1 1:22.1.5-1 2.79 MiB
cachyos/lib32-mesa 2:26.0.6-2 2:26.1.0-1 1.61 MiB
cachyos/lib32-opencl-mesa 2:26.0.6-2 2:26.1.0-1 1.67 MiB
cachyos/lib32-vulkan-mesa-implicit-layers 2:26.0.6-2 2:26.1.0-1 0.00 MiB
cachyos/lib32-vulkan-radeon 2:26.0.6-2 2:26.1.0-1 0.66 MiB
extra/libclc 22.1.3-1 22.1.5-1 0.00 MiB
cachyos-core-v4/libgpg-error 1.60-1.1 1.61-1.1 0.01 MiB
extra/libkdcraw 26.04.0-1 26.04.1-1 0.00 MiB
cachyos-extra-v4/libkexiv2 26.04.0-1.1 26.04.1-1.1 0.02 MiB
cachyos-v4/linux-cachyos 7.0.3-1 7.0.5-1 0.00 MiB
cachyos-v4/linux-cachyos-headers 7.0.3-1 7.0.5-1 2.02 MiB
cachyos-extra-v4/lld 22.1.3-1.1 22.1.5-1.1 0.22 MiB
extra/llvm 22.1.3-1 22.1.5-1 1.82 MiB
extra/llvm-libs 22.1.3-1 22.1.5-1 3.60 MiB
cachyos-extra-v4/mercurial 7.2.1-1.1 7.2.2-1.1 0.11 MiB
cachyos/mesa 2:26.0.6-2 2:26.1.0-1 2.21 MiB
extra/nodejs 25.9.0-1 26.1.0-1 5.58 MiB
extra/npm 11.13.0-1 11.14.1-1 0.04 MiB
cachyos-extra-v4/okular 26.04.0-1.1 26.04.1-1.1 0.01 MiB
cachyos/opencl-mesa 2:26.0.6-2 2:26.1.0-1 2.20 MiB
cachyos-extra-v4/openmp 22.1.3-1.1 22.1.5-1.1 0.09 MiB
cachyos-extra-v4/openxr 1.1.58-2.1 1.1.59.1-1.1 0.25 MiB
extra/prusa-slicer 2.9.4-9 2.9.4-10 0.48 MiB
extra/python-gobject 3.56.2-1 3.56.3-1 0.01 MiB
extra/python-urllib3 2.6.3-1 2.7.0-1 0.00 MiB
extra/qca-qt6 2.3.10-5 2.3.10-6 0.05 MiB
cachyos-extra-v4/rdma-core 62.0-1.1 63.0-1.1 0.32 MiB
cachyos-extra-v4/signon-kwallet-extension 26.04.0-1.1 26.04.1-1.1 0.00 MiB
cachyos-extra-v4/vim 9.2.0437-1.1 9.2.0450-1.1 0.00 MiB
cachyos-extra-v4/vim-runtime 9.2.0437-1.1 9.2.0450-1.1 0.00 MiB
cachyos-extra-v4/virglrenderer 1.2.0-1.1 1.3.0-2.1 0.28 MiB
cachyos/vulkan-mesa-implicit-layers 2:26.0.6-2 2:26.1.0-1 0.00 MiB
cachyos/vulkan-radeon 2:26.0.6-2 2:26.1.0-1 0.82 MiB
cachyos-extra-v4/yara 4.5.5-1.1 4.5.6-1.1 0.02 MiB
Total Installed Size: 6328.41 MiB
Net Upgrade Size: 51.05 MiB
:: Proceed with installation? [Y/n]
I know that is of no help, but my pacman -Syu runs as smoothly as always. I don’t know what you guys did to your pacman.conf or to your system in general, but it seems to me that the less you fiddle with the pacman configuration, the less you run in to problems as long as you keep a steady update-frequency of about once a week.
I have downloaded the packages manually from https://packages.cachyos.org , and checked the sha256 sums.
The sha256 sums do not match:
~ >>> curl -JO https://cdn77.cachyos.org/repo/x86_64_v4/cachyos-v4/linux-cachyos-lts-6.18.28-1-x86_64_v4.pkg.tar.zst
~ >>> sha256sum linux-cachyos-lts-6.18.28-1-x86_64_v4.pkg.tar.zst
7a98439998d98d0c5bb61879e36110f5228eddcee722c6e0640a26580e2cdc06 linux-cachyos-lts-6.18.28-1-x86_64_v4.pkg.tar.zst
This is specific to the v4 repo, which would explain why it only affects some users.
The same error apparently occurs during instalation from iso, so probably not a config issue.
It’s giving me these issues
