2014-07-09 16:45 GMT+02:00 Anatol Pomozov :

On Wed, Jul 9, 2014 at 6:03 AM, Csányi Pál wrote:

...

I just want to install sage-mathematics, but get error messages:

sudo pacman -S sage-mathematics resolving dependencies... looking for inter-conflicts...

Packages (1): sage-mathematics-6.2-2

Total Installed Size: 2444.61 MiB

:: Proceed with installation? [Y/n] (1/1) checking keys in keyring [#######################################] 100% downloading required keys... :: Import PGP key 4096R/, "Evgeniy Alekseev ", created: 2013-10-18? [Y/n] error: key "Evgeniy Alekseev " could not be imported error: required key missing from keyring error: failed to commit transaction (unexpected error) Errors occurred, no packages were upgraded.

What can I do to solve this problem?

Most likely you have wrong clock time at your computer https://bbs.archlinux.org/viewtopic.php?id=149759

No. I solve the problem by following the link: http://archlinuxarm.org/about/package-signing I just install the archlinux-keyring: $ sudo pacman -S archlinux-keyring warning: archlinux-keyring-20140220-1 is up to date -- reinstalling resolving dependencies... looking for inter-conflicts... Packages (1): archlinux-keyring-20140220-1 Total Download Size: 0.42 MiB Total Installed Size: 0.58 MiB Net Upgrade Size: 0.00 MiB :: Proceed with installation? [Y/n] After that I can to install sage-mathematics. -- Regards from Pal

2014-07-09 18:40 GMT+02:00 Karol Blazewicz :

On Wed, Jul 9, 2014 at 4:54 PM, Csányi Pál wrote:

...

I solve the problem by following the link: http://archlinuxarm.org/about/package-signing

Our wiki has information about package signing too.

https://wiki.archlinux.org/index.php/Package_signing -- Regards from Pal