Thanks for your report.
The error is
---
Configurando grub-pc (1.98-1ubuntu6) ...
frontend: Fatal IO error 11 (Recurso temporalmente no disponible) on X server
:0.0.
dpkg: error al procesar grub-pc (--configure):
el subproceso script post-installation instalado devolvió el código de salida
de error 1
affecting to grub2.
Could you please describe in detail what happened during the upgrade ?
** Package changed: dpkg (Ubuntu) => grub2 (Ubuntu)
** Changed in: grub2 (Ubuntu)
Status: New => Incomplete
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package apt-utils 0.7.25.3ubuntu8 failed to install/upgrade: package apt-utils
is already installed and configured
https://bugs.launchpad.net/bugs/581252
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